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Some current and upcoming events in Grassland Science 草地科学的一些当前和即将发生的事件
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-06-25 DOI: 10.1002/glr2.70063
Cory Matthew
{"title":"Some current and upcoming events in Grassland Science","authors":"Cory Matthew","doi":"10.1002/glr2.70063","DOIUrl":"https://doi.org/10.1002/glr2.70063","url":null,"abstract":"<p>It is salutary to see the emerging importance being accorded to grasslands and rangelands as a sector that makes a quiet but vital contribution to the stability of Earth's climate systems, to global food security, directly supports some 10% of the world's population, and provides a range of ecosystem services from recreational opportunity through water supply to sewage disposal, supporting urban populations. Recognizing this, the United Nations General Assembly, at its 76th session, declared 2026 the International Year of Rangelands and Pastoralists (IYRP). This provides a twofold opportunity. First, to celebrate the diversity of cultures and local knowledge of the peoples whose livelihoods have traditionally been derived from rangelands, this United Nations initiative “calls for policies that secure pastoralists’ access to land and natural resources, support mobility, and promote customary and inclusive governance, while encouraging adequate investments in rangeland management, ecosystem restoration, animal health services, and equitable value chains.” (https://www.fao.org/rangelands-pastoralists-2026/about/en). Second, the IYRP provides incentive for initiatives to protect grasslands and rangelands such as the 17th session of the Conference of the Parties (COP17) to the United Nations Convention to Combat Desertification, to be hosted by Mongolia in Ulaanbaatar, from August 17 to 28, 2026. This event “will bring together delegates from 197 Parties, heads of state, ministers, representatives from international organizations, scientific communities, civil society, and the private sector to forge solutions to the interconnected challenges of desertification, land degradation, and drought.” (https://www.unccd.int/events/governing-bodies-meetings/unccd-cop17) In this issue of <i>Grassland Research</i>, we carry a perspective article by He (<span>2026</span>), recognizing IYRP and advocating the need for more sown grasslands in China.</p><p>This event is to be held in Qingdao, China, from October 12 to 16, 2026 (https://conf.koushare.com/conf/iftbc2026/). The IFTBC follows on from two previous series of conferences: Molecular Breeding of Forage and Turf (MBFT) and the International Symposium of Forage Breeding (ISFB). The MBFT conference series was inaugurated with a meeting in Japan in 1998 and continued with conferences in Australia (2000); Texas, USA (2003); Aberystwyth, UK (2005); Hokkaido, Japan (2007); Buenos Aires, Argentina (2010); Salt Lake City, USA (2012); Istanbul, Turkey (2014); and Lanzhou, China (2016). The ISFB conference series began in Brazil in 2007, where the first three biennial conferences were held. The first outside Brazil was held in Melbourne, Australia, in 2013, and the 5th ISFB in Buenos Aires in 2015 was a joint meeting with the 10th MBFT conference. Combined meetings of the two conferences were again held in Florida (2019) and Brazil (2024).</p><p>The homepage of IFTBC 2026 states, “We live at a time of unprecedented ","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"91-92"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Native grass breeding: Priority needs and strategic approaches 原生草育种:优先需求和战略方法
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-04-29 DOI: 10.1002/glr2.70047
Xueming Dong, Wenxian Liu, Zhipeng Liu
{"title":"Native grass breeding: Priority needs and strategic approaches","authors":"Xueming Dong,&nbsp;Wenxian Liu,&nbsp;Zhipeng Liu","doi":"10.1002/glr2.70047","DOIUrl":"https://doi.org/10.1002/glr2.70047","url":null,"abstract":"<p>Native grasses possess extensive ecological adaptability, such as cold, drought, and salt tolerance, and tolerance to poor soil conditions. They play a crucial role in ensuring food security and ecological security. However, their development and utilization are still limited by lack of information on agronomic cultivation methods, low seed production, and difficulty in commercial production. This review summarizes the core requirements for native grass breeding and practical solutions. A “six-step” strategy for native grass breeding is proposed: (1) establish a basic agronomic cultivation system; (2) develop economically feasible seed production technologies to ensure farmers’ access to seeds; (3) systematically collect and evaluate germplasm resources in the target environment; (4) promote superior germplasm lines and achieve large-scale seed production; (5) initiate selection/breeding plans for key traits such as seed yield, seedling vitality, and multi-trait productivity; and (6) on this basis, strategically integrate advanced technologies such as genetic markers, gene editing, and omics analysis to accelerate the process of precision breeding. This progressive strategy emphasizes laying a solid foundation for breeding before applying newly emerging technologies to cultivate native grass varieties with commercial value.</p>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"93-102"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of sunn hemp performance and nutritive value in Maine, USA 美国缅因州麻的生产性能和营养价值评价
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-06-19 DOI: 10.1002/glr2.70053
Jaime Garzon, Edgar Cardenas
{"title":"Evaluation of sunn hemp performance and nutritive value in Maine, USA","authors":"Jaime Garzon,&nbsp;Edgar Cardenas","doi":"10.1002/glr2.70053","DOIUrl":"https://doi.org/10.1002/glr2.70053","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Sunn hemp (<i>Crotalaria juncea</i> L. and <i>Crotalaria ochroleuca</i> G. Don) was evaluated as a warm-season legume to mitigate the “summer slump” in Maine's forage production caused by heat and moisture deficit stress.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This study compared three cultivars: “Crescent Sunn,” “Loei,” and “Red Mini,” at 60 and 90 days after seeding over the 2024 and 2025 growing seasons to measure biomass, nitrogen (N) fixation, and nutritive value.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Environmental conditions significantly impacted performance; biomass accumulation in 2024 was 4296 kg dry matter (DM) ha<sup>−1</sup>, whereas the drought-stressed 2025 season produced 1099 kg DM ha<sup>−1</sup>. Notably, drought increased the percentage of N derived from the atmosphere (52% in 2025 vs. 33.8% in 2024) and improved forage nutritive value by increasing crude protein and digestibility. Crescent Sunn and Loei consistently outperformed Red Mini; across all cultivars, delaying harvest to 90 days increased total biomass but elevated lignin levels and reduced digestibility.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Sunn hemp is a resilient forage and N source for northern temperate regions; management should target a 60-day harvest for high-quality animal feed or a 90-day harvest for maximum cover crop biomass.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"112-118"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-inoculation with Bacillus and exopolysaccharide Cp2-exopolysaccharides promotes salt stress tolerance and productivity in alfalfa 芽孢杆菌与胞外多糖cp2共接种可提高紫花苜蓿的耐盐性和产量
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-06-21 DOI: 10.1002/glr2.70049
Rong Huang, Haiyan Chen, Xuemei Liu, Hsiang Tom, Xiaoni Liu, Zhenfen Zhang
{"title":"Co-inoculation with Bacillus and exopolysaccharide Cp2-exopolysaccharides promotes salt stress tolerance and productivity in alfalfa","authors":"Rong Huang,&nbsp;Haiyan Chen,&nbsp;Xuemei Liu,&nbsp;Hsiang Tom,&nbsp;Xiaoni Liu,&nbsp;Zhenfen Zhang","doi":"10.1002/glr2.70049","DOIUrl":"https://doi.org/10.1002/glr2.70049","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Alfalfa is one of the most important forage crops in the world, and its performance is significantly affected by salt stress. Although plant growth promoting rhizobacteria (PGPR) can alleviate salt stress, their colonization in the rhizosphere is often compromised by high salinity. Exopolysaccharides (EPS) not only enhance the stress resilience of PGPR but also directly improve plant salt tolerance. Consequently, a thorough investigation of the synergistic effects between EPS and PGPR is of significant theoretical and practical importance for developing advanced microbial fertilizers.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>To investigate the underlying mechanisms, we applied salt stress using NaCl and introduced EPS isolated from <i>Erwinia persicina</i> strain Cp2 (Cp2-EPS). The effects of co-inoculation of Cp2-EPS alone and <i>Bacillus</i> DN2 on the growth and salt tolerance of alfalfa were investigated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Pot experiments demonstrated that co-inoculation exerted stronger effects than single treatments, with Cp2-EPS showing a more pronounced impact than DN2 alone. The alfalfa seedlings after combined inoculation showed increased photosynthesis and greater accumulation of osmotic substances, such as proline, soluble sugars, and soluble proteins. Increased activity of superoxide dismutase and catalase effectively reduced cell membrane damage, enhanced the ability to scavenge reactive oxygen species, and alleviated oxidative stress symptoms in plant cells. The colonization density of DN2 in the alfalfa rhizosphere from the co-inoculation was significantly higher than that in the single DN2 inoculation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Alfalfa salt tolerance and productivity were synergistically enhanced by Cp2-EPS through its promotion of <i>Bacillus</i> DN2 colonization and persistence in the rhizosphere.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"119-131"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Grazing effects on feeding guilds of ground-dwelling arthropods vary with season and vegetation types in Mongolian grasslands 放牧对蒙古草原地栖节肢动物取食行会的影响随季节和植被类型的不同而不同
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-06-22 DOI: 10.1002/glr2.70051
Issei Nishimura, Yulan Qi, Yuki Iwachido, Batdelger Gantsetseg, Gaku Takimoto, Hiroko Kurokawa, Takehiro Sasaki
{"title":"Grazing effects on feeding guilds of ground-dwelling arthropods vary with season and vegetation types in Mongolian grasslands","authors":"Issei Nishimura,&nbsp;Yulan Qi,&nbsp;Yuki Iwachido,&nbsp;Batdelger Gantsetseg,&nbsp;Gaku Takimoto,&nbsp;Hiroko Kurokawa,&nbsp;Takehiro Sasaki","doi":"10.1002/glr2.70051","DOIUrl":"https://doi.org/10.1002/glr2.70051","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Livestock grazing is a major driver of arthropod community dynamics in drylands; however, its effects across vegetation types and seasons remain poorly understood.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We investigated seasonal (spring and summer) grazing effects on ground-dwelling arthropod communities by focusing on herbivore, detritivore, and omnivore abundance in steppe and desert steppe ecosystems of Mongolian grasslands.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Grazing consistently increased herbivore abundance across all contexts. In the steppe, however, grazing effects on detritivores and omnivores were season-dependent: detritivore abundance declined under grazing only in summer, while omnivore abundance increased only in summer. These patterns likely reflect minimal grazing-induced changes in vegetation height during spring, when vegetation is not fully developed. In the desert steppe, seasonal interactions were weak, likely due to sparse vegetation limiting seasonal variation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Grazing effects on arthropod communities vary with seasonal vegetation dynamics and differ between vegetation types. Accounting for seasonal variability is important for conserving arthropod communities in rangelands under climate change.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"151-156"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring variations in potential carbon and nitrogen mineralization in managed grasslands among the diversity of soils in North Carolina 在北卡罗来纳州土壤多样性中探索管理草原潜在碳氮矿化的变化
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-04-29 DOI: 10.1002/glr2.70044
Alan J. Franzluebbers
{"title":"Exploring variations in potential carbon and nitrogen mineralization in managed grasslands among the diversity of soils in North Carolina","authors":"Alan J. Franzluebbers","doi":"10.1002/glr2.70044","DOIUrl":"https://doi.org/10.1002/glr2.70044","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Nitrogen availability from mineralization of organic matter in managed forage and grazing lands can be substantial, but little is known of how it varies with management within and among farms within a region and across regions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Soil samples (<i>n</i> = 648) were collected at 0–10-cm depth under grasslands and woodlands across three physiographic regions of North Carolina, United States, which has a warm-humid climate. Potential C and N mineralization and inorganic N were classified by physiographic region, soil texture, and farm management to characterize influences.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Potential C and N mineralization were strongly associated across both grasslands and woodlands. Although physiographic region explained 27% ± 5% of the variation in C and N mineralization, it was individual farm locations varying by management and soil type that contributed the most to this variation (48% ± 2%), whereas field within a farm (11% ± 3%) and duplicate sampling within a field (11% ± 3%) were minor components. Soil-test biological activity was the best predictor of net N mineralization, with some modifications based on pasture age and quantity of hay fed on the farm. Apparent nitrification was inhibited under woodlands and in ~20% of samples under grasslands.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Pasture age and management were key factors controlling C and N mineralization. Widely varying soil N supply from mineralization suggests that N fertilizer recommendations for pastures should be adjusted for soil texture and management conditions, and use of the soil-test biological activity assay could be a simple indicator of N availability to guide these recommendations.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"169-181"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effectiveness of integrated shrub management and restoration techniques for rehabilitating shrub-encroached rangelands of South Africa 南非灌木侵占草地的综合管理与恢复技术的有效性
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-03-25 DOI: 10.1002/glr2.70040
Monelisi Makanya, Khanyisa Jama, Mthunzi Mndela, Sinalo Malindie
{"title":"Effectiveness of integrated shrub management and restoration techniques for rehabilitating shrub-encroached rangelands of South Africa","authors":"Monelisi Makanya,&nbsp;Khanyisa Jama,&nbsp;Mthunzi Mndela,&nbsp;Sinalo Malindie","doi":"10.1002/glr2.70040","DOIUrl":"https://doi.org/10.1002/glr2.70040","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Shrub encroachment (SE) drives rangeland degradation, threatening biodiversity and forage productivity. The reversal of the catastrophic effects of SE depends on the efficacy of restoration efforts. We evaluated the potential of manual removal of the shrub <i>Pteronia incana</i> (Burm.f.) DC. with or without reseeding mixtures of grasses (<i>Panicum maximum</i> Jacq. and <i>Eragrostis curvula</i> (Schrad.) Nees) on rangeland restoration at Peddie, Eastern Cape Province, South Africa.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>The treatments were (1) uprooting and reseeding (UPR), (2) uprooting only (UPO), (3) cutting and reseeding (CR), (4) cutting only (CO) and (5) untreated control (CTL), each replicated three times in North and South aspects.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Graminoid cover was higher in all treatments than in CTL, with CR showing relatively higher cover in North and South slopes. Restoration treatments increased plant density, richness and diversity compared to CTL. Slope aspect, treatment and seeded species interacted significantly on biomass production. CO in the North aspect attained two-fold higher biomass production of nonreseeded grasses than other treatments. Responses of reseeded species varied by aspect, with <i>P. maximum</i> attaining two-fold higher BP in CR and UPR in the North than the South slope, whereas <i>E. curvula</i> had higher biomass production in CR in the South than the North slope.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Shrub clearing facilitated restoration of diversity and plant densities regardless of the restoration method. However, biomass production and vegetation cover depended on the interaction of the shrub clearing method, reseeding and slope aspect. Thus, the decision on restoration of herbaceous vegetation should be informed by the vegetation attribute of restoration priority.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"137-150"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genomic selection for nitrogen use efficiency in perennial ryegrass (Lolium perenne L.) under field conditions 大田条件下多年生黑麦草氮素利用效率的基因组选择
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-06-22 DOI: 10.1002/glr2.70054
Junping Wang, M. Michelle Malmberg, Fan Shi, Shane McGlone, Pieter Badenhorst, Noel Cogan, Kevin F. Smith
{"title":"Genomic selection for nitrogen use efficiency in perennial ryegrass (Lolium perenne L.) under field conditions","authors":"Junping Wang,&nbsp;M. Michelle Malmberg,&nbsp;Fan Shi,&nbsp;Shane McGlone,&nbsp;Pieter Badenhorst,&nbsp;Noel Cogan,&nbsp;Kevin F. Smith","doi":"10.1002/glr2.70054","DOIUrl":"https://doi.org/10.1002/glr2.70054","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Improving the nitrogen use efficiency (NUE) of pastures has the benefit of reducing costs of production and reducing nitrogen loss to the environment. Genetic variation has been shown to exist for NUE, and hence NUE is a trait for breeding programs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In this study, we develop genomic selection methods for NUE in perennial ryegrass through developing high-throughput sensor-based phenotyping and genotyping by sequencing (GBS) technologies. NUE of an advanced perennial ryegrass breeding population was screened in a spaced plant field trial which contained 644 genotypes, 3 nitrogen treatment levels (0, 20, and 40 kg ha<sup>−1</sup> per application), and 3 replicates. The trial was conducted for 2 years with a total of 6 nitrogen applications. An unmanned aerial system (UAS) equipped with multispectral sensors was deployed weekly over the trial. Approximately 4–5 weeks after nitrogen fertilizer application, 75–675 selected samples were cut for ground truthing. Prediction models for biomass were developed based on spectral and ground truth data and biomass for each plant was computed. Plants were genotyped by GBS transcriptomics.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>NUE, defined as biomass production per unit of N application, varied significantly with N application level, season and among genotypes. Moderate broad-sense heritability (0.61–0.72) for NUE was observed. Genomic prediction accuracies were in the range of 0.3–0.5.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our results demonstrated that genomic selection for NUE was possible. The genomic prediction developed in these advanced breeding lines may be tested in other genetic backgrounds. The technologies are ready to be extended into other perennial pasture grass species.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"103-111"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Seasonal drivers of plant–soil–microbial community structure and functions in Western Himalayan grasslands, Pakistan 巴基斯坦喜马拉雅西部草原植物-土壤-微生物群落结构与功能的季节性驱动因素
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-02-01 DOI: 10.1002/glr2.70034
Huma Ali, Muhammad Rafiq, Allan Degen, Ben Sparrow, Zhanhuan Shang
{"title":"Seasonal drivers of plant–soil–microbial community structure and functions in Western Himalayan grasslands, Pakistan","authors":"Huma Ali,&nbsp;Muhammad Rafiq,&nbsp;Allan Degen,&nbsp;Ben Sparrow,&nbsp;Zhanhuan Shang","doi":"10.1002/glr2.70034","DOIUrl":"https://doi.org/10.1002/glr2.70034","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Himalayan grasslands are biodiversity hotspots vital for soil stabilization, carbon cycling and herbivore sustenance, and yet, studies on seasonal plant–soil–microbe dynamics remain limited in the Western Himalayas.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We examined seasonal variations in vegetation, soil properties and microbial diversity in subalpine (SAL, Pir Chinasi) and alpine (AL, Ratti Gali) grasslands.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Vegetation communities shifted seasonally, with summer being dominated by <i>Sibbaldia cuneata</i> Hornem. ex Kuntze in SAL and <i>Bistorta affinis</i> (D. Don) Greene in AL, while winter shifted to <i>Poa alpina</i> Pall. ex Roem. &amp; Schult. in SAL. Biodiversity indices were greater (<i>p</i> &lt; 0.05) in summer for SAL, while only richness differed seasonally in AL. Soil moisture correlated with soil organic carbon in winter (<i>r</i> = 0.642, <i>p</i> &lt; 0.01) and in summer (<i>r</i> = 0.756, <i>p</i> &lt; 0.001). Microbial alpha diversity peaked in summer, with communities dominated by Actinomycetota and Pseudomonadota. Microbial composition correlated with different soil properties seasonally with pH and micronutrients in summer and total potassium and phosphorus in winter. Beta diversity differed between grasslands (<i>p</i> = 0.001), while functional profiles remained stable seasonally, indicating metabolic resilience.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Seasonal shifts and grassland type drive the structure of Himalayan ecosystems. Although plant and microbial communities were seasonally dynamic, their core metabolic functions were stable, indicating functional resilience essential for stability of the vulnerable high-altitude ecosystems.</p>\u0000 </section>\u0000 </div>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"182-195"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
How much grassland do we need? 我们需要多少草地?
IF 2.8
Grassland Research Pub Date : 2026-07-01 Epub Date: 2026-06-21 DOI: 10.1002/glr2.70058
Jin-Sheng He
{"title":"How much grassland do we need?","authors":"Jin-Sheng He","doi":"10.1002/glr2.70058","DOIUrl":"https://doi.org/10.1002/glr2.70058","url":null,"abstract":"<p>The United Nations has designated 2026 as the International Year of Rangelands and Pastoralists, drawing attention to the importance of grasslands and the communities that rely on them. Rangelands cover 54% of Earth's land surface, including grasslands, savannas, shrublands, deserts, and tundra; yet, grasslands remain chronically undervalued, leading to degradation and fragmentation. Grasslands are critical ecosystems that complement forests. While forests excel in above-ground carbon storage, grasslands outperform them in soil carbon sequestration, water retention, and drought resilience. Both deserve equal priority in conservation efforts. Global data reveal clear allometric relationships between grassland, forest, and national land areas. Notably, China, despite leading the world in planted forest area, has a critically low planted grassland coverage of just 0.22%, far below the expected level. From these allometric relationships, it is suggested that China would require an additional 93 400 km<sup>2</sup> of planted grassland to achieve a target of 3.55% of the total grassland area. In this milestone year, we advocate for the creation of stronger, science-based policies aimed at protecting and restoring global grassland ecosystems. Importantly, for China, this encompasses the scientifically informed expansion of high-quality planted grassland to fulfill aspirations for aesthetic optimization of humanity's living space.</p>","PeriodicalId":100593,"journal":{"name":"Grassland Research","volume":"5 2","pages":"132-136"},"PeriodicalIF":2.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/glr2.70058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148358242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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