Crop Science最新文献

Resistance gene enrichment sequencing for NLR genes for Phytophthora sojae in selected soybean plant introductions and differentials with putative novel and known Rps genes 对大豆引种植物的 NLR 基因进行抗性基因富集测序，以及推定的新型 Rps 基因和已知 Rps 基因之间的差异

IF 2.3 3区农林科学

Crop Science Pub Date : 2024-11-18 DOI: 10.1002/csc2.21413

Brian Hodge, Amine Batnini, Carlos Bolaños-Carriel, Kyujung Van, M. A. Saghai Maroof, Leah McHale, Anne E. Dorrance

{"title":"Resistance gene enrichment sequencing for NLR genes for Phytophthora sojae in selected soybean plant introductions and differentials with putative novel and known Rps genes","authors":"Brian Hodge, Amine Batnini, Carlos Bolaños-Carriel, Kyujung Van, M. A. Saghai Maroof, Leah McHale, Anne E. Dorrance","doi":"10.1002/csc2.21413","DOIUrl":"https://doi.org/10.1002/csc2.21413","url":null,"abstract":"Numerous sources of putative novel resistance genes toward Phytophthora sojae (Rps genes) have been identified and loci mapped in soybean (Glycine max L. Merr.) but cloning has remained elusive. We utilized resistance gene enrichment sequencing (RenSeq) to identify the putative resistance genes in 20 plant introductions (PIs) and differentials of the cultivar Williams with rps, Rps1c, Rps3a, and Rps8. The DNA from these genotypes was enriched and sequenced using more than 25,000 80 nt baits designed to nucleotide-binding leucine-rich repeat (NLR) encoding sequences. Overall, there were greater numbers of variants in the NLR-encoding genes in Rps loci on chromosomes (Chrs) 3, 7, 13, and 18 for the 20 PIs as compared to the Williams differentials for rps, Rps1c, Rps1k, Rps3a, and Rps8. Genes encoding Rps1c, Rps3a, and Rps8 were proposed based on sequence differences among the differentials. Among the 20 PIs, there may be additional alleles on Chrs 3, 13, and 18, and PI399079 may have two new alleles at Chrs 3 and 7 loci. A unique NLR on Chr 8 was identified in PI200553. New alleles were also identified on Chrs 3 and 18 when the PI and resistant bulks were compared to susceptible recombinant inbred lines. This study demonstrates the utility of RenSeq as an efficient method to identify and predict specific novel NLR genes in landrace soybean germplasm, which confer resistance to P. sojae and obtain gene-specific markers to facilitate their introgression into modern cultivars.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"18 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing drought resistance in warm-season turfgrasses: Fourteen years of progress through a multistate collaborative project across the southern United States 增强暖季型草坪草的抗旱性：美国南部多州合作项目十四年来取得的进展

IF 2.3 3区农林科学

Crop Science Pub Date : 2024-11-18 DOI: 10.1002/csc2.21393

Beatriz Tome Gouveia, Kevin E. Kenworthy, Ambika Chandra, Brian M. Schwartz, Jing Zhang, Paul L. Raymer, Yanqi Wu, Marta Pudzianowska, James Baird, Grady L. Miller, J. Bryan Unruh, Benjamin G. Wherley, Dennis L. Martin, Justin Q. Moss, Sameer Khanal, Susana Milla-Lewis

{"title":"Enhancing drought resistance in warm-season turfgrasses: Fourteen years of progress through a multistate collaborative project across the southern United States","authors":"Beatriz Tome Gouveia, Kevin E. Kenworthy, Ambika Chandra, Brian M. Schwartz, Jing Zhang, Paul L. Raymer, Yanqi Wu, Marta Pudzianowska, James Baird, Grady L. Miller, J. Bryan Unruh, Benjamin G. Wherley, Dennis L. Martin, Justin Q. Moss, Sameer Khanal, Susana Milla-Lewis","doi":"10.1002/csc2.21393","DOIUrl":"https://doi.org/10.1002/csc2.21393","url":null,"abstract":"In turfgrass breeding, drought resistance is a primary trait for improvement due to scarcity and reduced quality of water for irrigation. Therefore, in 2010, the turfgrass breeding programs at six public universities joined efforts to address these challenges by cross evaluating breeding lines for the most economically significant warm-season turfgrass species in the southern United States through a United States Department of Agriculture-National Institute for Food and Agriculture Specialty Crop Research Initiative funded project. Three breeding cycles were associated with three completed (2010–2014, 2014–2019, and 2019–2024) collaborative grant projects, but the efficiency of this partnership in terms of gains from selection has not been measured. Our objectives were to (1) estimate the expected and realized genetic gain for drought resistance and turfgrass quality for three breeding cycles, (2) compare cultivars developed with support of the projects versus standard cultivars in a historical data analysis, and (3) compare genetic gain for traits assessed visually versus using small unmanned aircraft systems imagery, both in drought and non-drought environments. For these purposes, historical data were investigated with a retrospective analysis of project trials evaluated 2011–2024. Our findings for the realized genetic gain demonstrated progress in enhancing drought resistance in bermudagrass, St. Augustinegrass, seashore paspalum, and zoysiagrass. In addition, notable positive increments for this trait were documented for each cycle compared to the standard cultivars, particularly in bermudagrass, St. Augustinegrass, and zoysiagrass. While heritability was higher for visually assessed traits, genetic increments were more pronounced for imagery-assessed traits.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"18 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transcriptomic and metabolomic analysis reveal differentially expressed genes and metabolic pathways in bermudagrass under drought stress 转录组和代谢组分析揭示了干旱胁迫下百慕大草的差异表达基因和代谢途径

IF 2.3 3区农林科学

Crop Science Pub Date : 2024-11-18 DOI: 10.1002/csc2.21412

Ravi Teja Seelam, David Jespersen

{"title":"Transcriptomic and metabolomic analysis reveal differentially expressed genes and metabolic pathways in bermudagrass under drought stress","authors":"Ravi Teja Seelam, David Jespersen","doi":"10.1002/csc2.21412","DOIUrl":"https://doi.org/10.1002/csc2.21412","url":null,"abstract":"Drought stress poses a significant challenge to turfgrass growth, particularly in the regions like southern United States, where bermudagrass (Cynodon sp.) is widely used for lawns and sports fields. Drought stress disrupts physiological processes, leading to reduced water availability, impaired photosynthesis, and oxidative stress. To understand the bermudagrass response to drought, we investigated the physiological differences and characterized the gene expression and metabolite profiles in two bermudagrass genotypes, TifTuf and Premier. Physiological measurements showed significant variations in green cover percentage, visual quality, and relative water content between the two genotypes. RNA sequencing revealed extensive gene expression changes, with differentially expressed genes that were upregulated in both genotypes. Gene ontology (GO) analysis highlighted biological processes such as transcription regulation, lipid metabolism, and cellular structure development pathways. KEGG pathway analysis indicated that TifTuf had significant changes in galactose metabolism, carotenoid biosynthesis, and plant hormone signal transduction pathways, while Premier showed enrichment in plant hormone signaling, lipid metabolism, and secondary metabolite biosynthesis pathways. Metabolomic analysis provided insights into metabolic reprogramming due to drought stress. Principal component analysis revealed distinct metabolic patterns between control and drought-stressed samples, with both genotypes showing substantial alterations. Differential metabolite analysis identified key metabolites associated with stress adaptation, including the phytohormone ABA and various amino acids. This analysis elucidates the intricate physiological and molecular mechanisms underlying drought tolerance in bermudagrass genotypes. These findings enhance the understanding of drought stress adaptation strategies in bermudagrass and offer valuable insights for the development of drought-tolerant genotypes.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"70 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Yield determination of temperate maize hybrids with different end-uses: An ecophysiological analysis 不同最终用途的温带玉米杂交种的产量测定：生态生理学分析

IF 2.3 3区农林科学

Crop Science Pub Date : 2024-11-18 DOI: 10.1002/csc2.21414

Yésica D. Chazarreta, Santiago Alvarez Prado, Víctor D. Giménez, Ana J. P. Carcedo, César G. López, Ignacio A. Ciampitti, Maria E. Otegui

{"title":"Yield determination of temperate maize hybrids with different end-uses: An ecophysiological analysis","authors":"Yésica D. Chazarreta, Santiago Alvarez Prado, Víctor D. Giménez, Ana J. P. Carcedo, César G. López, Ignacio A. Ciampitti, Maria E. Otegui","doi":"10.1002/csc2.21414","DOIUrl":"https://doi.org/10.1002/csc2.21414","url":null,"abstract":"Maize (Zea mays L.) production in Argentina changed markedly during the last decade due to the widespread adoption of late sowing dates, expanding its productive area, and diversifying crop end-uses. This study was conducted to assess how the sowing date and nitrogen (N) availability affect grain yield, its physiological determinants (biomass and its partitioning), and numeric components (kernel number and kernel weight) of maize hybrids marketed for different end-uses. Field experiments were conducted in two growing seasons (2019–2020 and 2020–2021) and two sowing dates within each season (early and late) at a site in the main maize-producing region of Argentina. Within each season × sowing date combination, eight commercial maize hybrids (commercialized as grain, dual-purpose, or silage) were tested under two N levels (N0: no N applied; N250: fertilized with 250 kg N ha−1). The greatest grain yield, biomass, kernel number, and harvest index corresponded to the grain hybrids. Dual-purpose hybrids showed an intermediate grain yield, the highest kernel weight, and a more “silage” than “graniferous” behavior. Silage hybrids had improved light interception up to silking + 15 days (R2) but exhibited the lowest grain yield. Differences in end-use steered crop breeding efforts toward different physiological strategies. The improved understanding of the physiological mechanisms underlying the productivity among maize hybrids with varying end-uses will assist in the selection and management of suitable cultivars to be grown under different systems and environmental variations associated with an extended sowing date period.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"128 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Employing empirical models to analyze stability of yield and quality traits in chili peppers (Capsicum species) 利用经验模型分析辣椒（辣椒品种）产量和质量性状的稳定性

IF 2 3区农林科学

Crop Science Pub Date : 2024-10-20 DOI: 10.1002/csc2.21390

S. Subhavyuktha, H. Usha Nandhini Devi, K. K. Kumar, P. Irene Vethamoni, N. Premalatha, S. Srividhya

{"title":"Employing empirical models to analyze stability of yield and quality traits in chili peppers (Capsicum species)","authors":"S. Subhavyuktha, H. Usha Nandhini Devi, K. K. Kumar, P. Irene Vethamoni, N. Premalatha, S. Srividhya","doi":"10.1002/csc2.21390","DOIUrl":"10.1002/csc2.21390","url":null,"abstract":"Stability analysis plays a crucial role in plant breeding programs aimed at enhancing crop productivity and resilience. Chili yield stability studies based on the interaction of genotype × environment have been widely conducted, as stable yield is very substantial in the formation of sustainably high-yielding chili varieties. Multi-environmental trials, conducted across different seasons, locations, or both, are used to assess these G × E interactions through various statistical models. In this context, this review paper explores the understanding of stability analysis in chili breeding, the significance of genotype by environment interaction, and the methods employed in this domain, providing a comprehensive update on recent advancements in stability analysis specific to chili breeding. Furthermore, research studies conducted on stability analysis in chili breeding programs and software used to assess crop stability are featured, shedding light on the application, challenges, and future prospects in the field. The importance of stability analysis in developing stable genotypes and enhancing agricultural productivity amid evolving environmental conditions is herewith underscored. These insights are critical for breeding programs aiming to create robust genotypes capable of adapting to changing environmental conditions, ultimately contributing to more sustainable agricultural practices.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"2977-2997"},"PeriodicalIF":2.0,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Defense strategies against sweet potato chlorotic stunt and pakakuy virus coinfection unraveled 甘薯叶枯病和帕卡基病毒共感染的防御策略揭秘

IF 2 3区农林科学

Crop Science Pub Date : 2024-10-20 DOI: 10.1002/csc2.21392

Francis Wanjohi Kiemo, Pál Salamon, Zoltán Tóth, Zoltán Szabó

{"title":"Defense strategies against sweet potato chlorotic stunt and pakakuy virus coinfection unraveled","authors":"Francis Wanjohi Kiemo, Pál Salamon, Zoltán Tóth, Zoltán Szabó","doi":"10.1002/csc2.21392","DOIUrl":"10.1002/csc2.21392","url":null,"abstract":"This study into the response of two Ipomoea batatas (L.) Lam cultivars, Melinda and Tio Joe, to coinfection with sweet potato chlorotic stunt virus (SPCSV) and sweet potato pakakuy virus (SPPV), employed a comprehensive approach encompassing symptomatology, real-time quantitative polymerase chain reaction, metagenomics, and transcriptomics. SPCSV is a quarantine virus with synergistic effects, which decimate yields. SPPV is the most prevalent DNA virus in sweet potato germplasm, with a tendency to persist in meristems, posing a significant risk for germplasm transfer between territories. Graft inoculation experiments revealed that while Tio Joe remained asymptomatic for 12 weeks and suppressed virus replication, Melinda displayed symptoms early on and exhibited high virus titers. Metagenomic analyses corroborated these observations and confirmed that SPCSV and SPPV were responsible. Transcriptomic analysis unveiled disparities in gene expression between Melinda and Tio Joe. Differential gene expression was heightened and altered in Melinda as the viruses disrupted its gene expression. Its defense strategies, such as inducing abscisic acid signaling, were insufficient to overcome disruptive viral effects like oxidative stress, rendering it susceptible. In contrast, Tio Joe had relatively stable differential gene expression, indicating resistance to SPPV–SPCSV coinfection. Overexpressed genes such as sirtuin, rapid alkalization factor, and nuclear pore anchor triggered quantitative resistance, supported with enriched organelles such as mitochondrion and pathways such as proteasome and cutin, suberine, and wax biosynthesis. Tio Joe maintained its genome integrity and inhibited viral replication by tightly controlling gene expression and preventing reactive oxygen species accumulation.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"3438-3460"},"PeriodicalIF":2.0,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.21392","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic architecture of Cercospora leaf spot response in table beet with implications for other Beta vulgaris crop types 甜菜对 Cercospora 叶斑病反应的遗传结构及其对其他甜菜作物类型的影响

IF 2 3区农林科学

Crop Science Pub Date : 2024-10-18 DOI: 10.1002/csc2.21396

Liam Dixon, Irwin L. Goldman

{"title":"Genetic architecture of Cercospora leaf spot response in table beet with implications for other Beta vulgaris crop types","authors":"Liam Dixon, Irwin L. Goldman","doi":"10.1002/csc2.21396","DOIUrl":"10.1002/csc2.21396","url":null,"abstract":"Table beet (Beta vulgaris subsp. vulgaris) production is threatened by the fungal disease Cercospora leaf spot (CLS). Infections are common across table beet's closest relatives, including Swiss chard, sugar beet, and fodder beet (all B. v. subsp. vulgaris). This study was conducted to characterize the genetic architecture underlying CLS response in table beet. A secondary objective was to test whether CLS-associated loci in table beet perform similarly across B. vulgaris crops. A diversity panel comprised of 168 table beet accessions and with an additional 70 accessions from all close relatives of table beet was screened for CLS response in replicated and inoculated field trials. Results from a genome-wide association study of additive effects revealed seven quantitative trait loci mapped to chromosomes 1, 3, 7, and 9 to explain 30% of the phenotypic variation for CLS response in table beet. When the performance of these loci was compared between a table beet background and a background of Swiss chard, sugar beet, and fodder beet, two loci exhibited significantly different responses. Among the B. vulgaris crops, these loci may be unique to table beet germplasm and could be useful for the improvement of CLS resistance in other crop types. For the improvement of CLS resistance in table beet, this study identified the cultivar Winter Keeper as a potentially valuable source of resistance. The architecture of CLS response points to recurrent selection and backcross methods as effective strategies for the improvement of CLS resistance in table beet.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"3352-3371"},"PeriodicalIF":2.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.21396","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of turfgrasses in environmental protection and their benefits to humans: Thirty years later 草坪草在环境保护中的作用及其对人类的益处：三十年后

IF 2 3区农林科学

Crop Science Pub Date : 2024-10-17 DOI: 10.1002/csc2.21383

Ross C. Braun, Parul Mandal, Emmanuel Nwachukwu, Alex Stanton

{"title":"The role of turfgrasses in environmental protection and their benefits to humans: Thirty years later","authors":"Ross C. Braun, Parul Mandal, Emmanuel Nwachukwu, Alex Stanton","doi":"10.1002/csc2.21383","DOIUrl":"10.1002/csc2.21383","url":null,"abstract":"Beard and Green compiled one of the earliest reviews on the environmental and societal (cultural) benefits that living turfgrass systems (e.g., home lawns, athletic fields, golf courses, roadsides, and grounds) provide to humans and associated contemporary issues with turfgrass. Today, the benefits of vegetation systems are called ecosystem services, and the associated negative aspects are called disservices. Since 1994, a significant amount of research has been conducted to further understand these ecosystem services and disservices and discover new ecosystem services and disservices, which we summarize and identify the knowledge gaps in this review. Turfgrass systems provide positive economic benefits to the US economy and help increase property values; however, many of these ecosystem services are environmental and societal. Some environmental services include (1) improving soil health, quality, and stability; (2) oxygen production; (3) reducing stormwater runoff; (4) filtering water to protect waterways and recharging groundwater; (5) providing evaporative cooling and reducing sunlight glare to improve human comfort levels; (6) offering vertebrate and invertebrate habitat; and (7) offering solutions for recycling wastewater and biosolids. Some societal (cultural) services include (1) outdoor spaces that improve human mental and physical health, (2) increasing community and social harmony, (3) helping deter crime, and (4) reducing human contact with noxious weeds and human-disease insect vectors. Research, cooperative extension, and education efforts must be increased on these topics to continue to provide additional evidence of these ecosystem services to the public, policymakers, turfgrass practitioners, homeowners, students, and future generations.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"2909-2944"},"PeriodicalIF":2.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.21383","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142448379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Brassica carinata A. Braun resistant to acetolactate synthase–inhibiting herbicides 培养出能抵抗乙酰乳酸合成酶抑制性除草剂的 Brassica carinata A. Braun

IF 2 3区农林科学

Crop Science Pub Date : 2024-10-16 DOI: 10.1002/csc2.21391

Ramon G. Leon, Rick Bennett, Saket Chandra

{"title":"Development of Brassica carinata A. Braun resistant to acetolactate synthase–inhibiting herbicides","authors":"Ramon G. Leon, Rick Bennett, Saket Chandra","doi":"10.1002/csc2.21391","DOIUrl":"10.1002/csc2.21391","url":null,"abstract":"Brassica carinata A. Braun (carinata) has become an important oil crop for biofuel production in subtropical regions. Carinata is highly sensitive to acetolactate synthase (ALS)-inhibiting herbicides, limiting its introduction into existing crop rotations. The objective of the study was to develop carinata lines resistant to ALS-inhibiting herbicides. A susceptible carinata line was crossed with a resistant Brassica napus L. line. Lines derived from those crosses were screened at high doses of imidazolinones, which allowed identifying five lines with high levels of resistance. Doses to reduce plant growth 50% (GR50) and cause 50% injury (ID50) were four to nine times greater than susceptible lines. Resistant lines exhibited cross resistance with halosulfuron (sulfonylurea). Resistance was confirmed under field conditions with doses 2X and 4X for imazethapyr and 4X–8X for halosulfuron of their respective label doses. While susceptible lines died, resistant lines exhibited no injury or growth reductions compared with nontreated controls. Sequencing of the ALS gene indicated that all resistant lines carried a Trp574Leu amino acid substitution, a mutation responsible for resistance in other species. Crosses between resistant lines and a susceptible line demonstrated that the inheritance of the mutation corresponded with the resistance phenotype in the F2. The resistance trait behaved as a single, fully dominant allele, which makes it easier to transfer it to carinata lines with desirable agronomic traits. The resistant lines developed here provide flexibility for use in multiple crop rotations and opens the possibility to use ALS-inhibiting herbicides for weed control within this crop's growing season.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"3339-3351"},"PeriodicalIF":2.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.21391","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of genotype × environment interaction and selection history on genomic prediction in maize (Zea mays L.) 基因型 × 环境相互作用和选择史对玉米（Zea mays L.）基因组预测的影响

IF 2 3区农林科学

Crop Science Pub Date : 2024-10-15 DOI: 10.1002/csc2.21379

Martin Costa, James B. Holland, Natalia de Leon, Shawn M. Kaeppler

{"title":"Impact of genotype × environment interaction and selection history on genomic prediction in maize (Zea mays L.)","authors":"Martin Costa, James B. Holland, Natalia de Leon, Shawn M. Kaeppler","doi":"10.1002/csc2.21379","DOIUrl":"10.1002/csc2.21379","url":null,"abstract":"Breeders made remarkable progress in improving productivity and stability of cultivars. Breeding progress relies on selecting favorable alleles for performance and stability to produce productive varieties across diverse environments. In this study, we analyzed the Genomes to Fields Initiative 2018–2019 genotype by environment interaction (G × E) dataset, focusing on three populations of double haploid (DH) lines derived from crossing inbrexpired Plant Variety Protection (ex-PVP) inbred line PHW65 with inbred lines PHN11, Mo44, and MoG. PHW65 is an Iodent/Lancaster-type inbred; PHN11 is an Iodent type ex-PVP line; Mo44 is a tropical-derived inbred; and MoG is an agronomically poor line derived from the variety Mastadon. Hybrids were produced by crossing the resulting DHs with Stiff Stalk testers PHT69 and LH195. The study's objective was to determine the donor inbreds' relative value and understand the impact of selection history on genomic prediction. We conducted a two-stage analysis to compare hybrid performance and G × E variance of the populations. G × E variance for yield was significantly lower in the PHW65 × PHN11 population relative to the PHW65 × MoG population. The reduced G × E variance of the PHN11 population led to increased indirect prediction accuracy (when training and testing data are drawn from the same population but different environments). In cross-validation, the PHN11 population had the greatest indirect prediction accuracy 45% of the time, followed by the Mo44 population (30%) and the MoG population (25%). Results demonstrate that prediction accuracy was greater in the population with the longest history of selection for favorable alleles (PHN11), contributing to greater yield stability.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"64 6","pages":"3293-3310"},"PeriodicalIF":2.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.21379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142439742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0