Crop Science最新文献_第6页

Epichlöe festucae endophyte mediated maternal inheritance of dollar spot disease resistance in hard fescue Epichlöe羊茅内生菌介导的硬羊茅抗斑病母系遗传

IF 2 3区农林科学

Crop Science Pub Date : 2025-03-06 DOI: 10.1002/csc2.70012

Trent M. Tate, Ruying Wang, Stacy A. Bonos, Bruce B. Clarke, Alec R. Kowalewski, William A. Meyer

{"title":"Epichlöe festucae endophyte mediated maternal inheritance of dollar spot disease resistance in hard fescue","authors":"Trent M. Tate, Ruying Wang, Stacy A. Bonos, Bruce B. Clarke, Alec R. Kowalewski, William A. Meyer","doi":"10.1002/csc2.70012","DOIUrl":"https://doi.org/10.1002/csc2.70012","url":null,"abstract":"Hard fescue (Festuca brevipila) is a fine-leaved cool-season turfgrass and is well adapted for low-maintenance areas, such as home lawns, parks, and roadsides. Breeding for improved disease resistance is a major objective in utilizing hard fescue under low-input management. The Epichlöe festucae endophyte-mediated dollar spot (Clarireedia jacksonii) resistance and its mechanism have been well-documented in strong creeping red fescue (F. rubra subsp. rubra). However, little is known about dollar spot resistance in hard fescue. The objectives of this research were to (1) understand the inheritance of dollar spot resistance in hard fescue and determine the reciprocal effects by performing a diallel cross between three resistant endophyte-containing and three susceptible endophyte-free parents and (2) confirm the role of E. festucae endophyte in dollar spot resistance by artificially inoculating hard fescue with the endophyte (ME+) and comparing ME+ plants to their genetically identical counterparts without the endophyte (E‒) under dollar spot pressure. The highly significant maternal effect from the diallel cross experiment demonstrated that the dollar disease resistance is maternally inherited in hard fescue and linked with the maternal inheritance of the E. festucae endophyte. The greenhouse study further confirmed that the presence of E. festucae endophyte significantly reduced dollar spot in hard fescue. Understanding this endophyte effect on maternal inheritance of dollar spot resistance will enable more efficient breeding and selection of plant materials to use in the development of improved dollar spot resistant cultivars in hard fescue.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/csc2.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564985","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

Characterization of a greenbug resistance gene in a wheat breeding line BW 49921 小麦育种品系bw49921抗绿虫基因的鉴定

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-21 DOI: 10.1002/csc2.70019

Genqiao Li, Tezera W. Wolabu, Guihua Bai, Ruolin Bian, Amy Bernardo, Brett F. Carver, Yanqi Wu, Xiangyang Xu

{"title":"Characterization of a greenbug resistance gene in a wheat breeding line BW 49921","authors":"Genqiao Li, Tezera W. Wolabu, Guihua Bai, Ruolin Bian, Amy Bernardo, Brett F. Carver, Yanqi Wu, Xiangyang Xu","doi":"10.1002/csc2.70019","DOIUrl":"https://doi.org/10.1002/csc2.70019","url":null,"abstract":"Greenbug [Schizaphis graminum (Rondani)] is a major wheat (Triticum aestivum L.) pest that causes significant yield losses worldwide. Use of plant resistance is an effective and environmentally friendly strategy to manage greenbug. BW 49921 is a spring wheat breeding line showing resistance to major US greenbug biotypes. Genetic analysis of an F2:3 population from the cross BW 49921 × Breakthrough revealed a single dominant gene conditioning greenbug resistance in BW 49921, and selective genotyping identified a genomic region associated with the greenbug resistance in chromosome arm 7DL. Ten single nucleotide polymorphisms (SNPs) in the target genomic region were converted to kompetitive allele-specific PCR (KASP) markers to genotype the entire F2 population. Linkage analysis using F2:3 phenotypic data delimited the greenbug resistance gene in BW 49921, designated Gb49921, to a 0.5-Mb interval between Stars-KASP419 (598.8 Mb) and Stars-KASP1061 (599.3 Mb). Gb49921 was 1.0 cM distal to Stars-KASP419 and 0.6 cM proximal to Stars-KASP1061. Allelism tests indicated that Gb49921 is not allelic to either Gb3 or Gb8. Gb49921 confers high resistance to greenbug biotypes C, E, H, I, and K and moderate resistance to TX1. The KASP markers developed in this study can be used for marker-assisted selection of Gb49921 in wheat breeding programs.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455946","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 variation, plasticity, adaptation, and performance ranking of winter wheat varieties across the environmental gradient of the US Pacific Northwest 美国太平洋西北部不同环境梯度冬小麦品种的产量变化、可塑性、适应性和性能排名

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-21 DOI: 10.1002/csc2.70018

Curtis B. Adams, Clark Neely, Ryan Graebner

{"title":"Yield variation, plasticity, adaptation, and performance ranking of winter wheat varieties across the environmental gradient of the US Pacific Northwest","authors":"Curtis B. Adams, Clark Neely, Ryan Graebner","doi":"10.1002/csc2.70018","DOIUrl":"https://doi.org/10.1002/csc2.70018","url":null,"abstract":"The US Pacific Northwest is a major wheat (Triticum aestivum L.) production region with widely ranging water availability across its dryland and irrigated cropping systems. There have been no evaluations of variation, plasticity, adaptation, and performance of wheat yield due to variety—collectively or individually—that consider the entire environmental gradient of the region, useful for yield gap analysis, informing breeding, and other applications. Our objectives were to provide these evaluations using a large variety trial dataset and an independent dataset. Using linear models covering site-averaged yields (× variable) from about 1.50 to 12.0 Mg ha−1, upper and lower yield boundaries due to differences in variety performance were characterized by the regression models y = 1.08x + 0.24 and y = 0.906x − 0.13, respectively. The accuracy and usefulness of these functions were validated by the close fit of an independent dataset. Yield plasticity and environmental adaptation of 45 individual wheat varieties were also evaluated using the Finlay–Wilkinson regression approach, which showed wide variation in varietal yield responses to environment and substantial differences in yield stability (i.e., variation around the yield trend). A limitation of this analytical approach has been that the regression coefficients are not directly useful for ranking varieties for yield performance across contrasting environments. A simple transformation procedure of the coefficients into a single metric was effective for rapidly providing such rankings. A limited analysis is presented quantifying the relative contributions of genotype (27%–58% within sites), environment (84% across sites), and their interaction (5% across sites) on regional yields, as well as yield analysis of club wheat. In summary, this work provides useful research tools and a region-wide perspective on yield traits of Pacific Northwest wheat varieties.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455755","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

Identification of QTLs for reproductive stage salinity tolerance in rice using a cross between CSR28 and BRRI dhan28 利用CSR28与BRRI dhan28杂交鉴定水稻生殖期耐盐性qtl

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-21 DOI: 10.1002/csc2.70014

Sejuti Mondal, Robert Vaughn, Endang M. Septiningsih, Rakesh K. Singh, Michael J. Thomson

{"title":"Identification of QTLs for reproductive stage salinity tolerance in rice using a cross between CSR28 and BRRI dhan28","authors":"Sejuti Mondal, Robert Vaughn, Endang M. Septiningsih, Rakesh K. Singh, Michael J. Thomson","doi":"10.1002/csc2.70014","DOIUrl":"https://doi.org/10.1002/csc2.70014","url":null,"abstract":"Salinity poses a serious threat to rice (Oryza sativa L.) production in coastal regions across the globe. Since salinity tolerance is a complex and polygenic trait, understanding the salt-tolerance mechanisms is key for rice breeding. Breeding efforts can be aided by quantitative trait locus (QTL) mapping for complementary salt tolerance mechanisms in plants. While numerous studies are available on salinity tolerance at the seedling stage, limited studies have been conducted on reproductive stage tolerance in rice due to the difficulty in achieving reliable stage-specific phenotyping techniques. In this study, a BC1F2 mapping population consisting of 435 individuals derived from a cross between a salt-tolerant Indian variety, CSR28, and a salt-sensitive Bangladeshi mega variety, BRRI dhan28, was evaluated for yield components after exposure to salinity stress of EC 10 dS/m during the reproductive stage. After selecting extremely tolerant and sensitive progenies, 190 individuals were genotyped by kompetitive allele-specific PCR (KASP) genotyping with 152 high-quality single nucleotide polymorphic (SNP) markers. Consequently, 15 QTLs were identified under reproductive stage salt stress, including plant height, panicle length, number of filled and unfilled spikelets, percent filled spikelets, grain yield, and the Na+-K+ ratio. Notably, three QTLs, one each for the number of filled spikelets (qNFS10.1), percent filled spikelets (qPFS10.1), and grain yield (qGY10.1), were mapped at the same position (75.9 cM) on chromosome 10. These promising QTLs can be examined further to dissect the molecular mechanisms underlying reproductive stage salinity tolerance in rice.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456101","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

Identification of genetic loci associated with protein and fiber digestibility in alfalfa (Medicago sativa L.) 紫花苜蓿蛋白质和纤维消化率相关基因位点的鉴定

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-18 DOI: 10.1002/csc2.70004

Sen Lin, Cesar Augusto Medina, Smit Bipinchandra Patel, Zhanyou Xu, Geoffrey I. Zanton, David Combs, Guojie Wang, Glenn Shewmaker, Steve Fransen, Don Llewellyn, Steven Norberg, Long-Xi Yu

{"title":"Identification of genetic loci associated with protein and fiber digestibility in alfalfa (Medicago sativa L.)","authors":"Sen Lin, Cesar Augusto Medina, Smit Bipinchandra Patel, Zhanyou Xu, Geoffrey I. Zanton, David Combs, Guojie Wang, Glenn Shewmaker, Steve Fransen, Don Llewellyn, Steven Norberg, Long-Xi Yu","doi":"10.1002/csc2.70004","DOIUrl":"https://doi.org/10.1002/csc2.70004","url":null,"abstract":"Alfalfa (Medicago sativa L.), known as the queen of forages, is a versatile and valuable forage crop that holds significant importance in agriculture due to its myriad benefits for livestock. Ruminants benefit from alfalfa's digestible fiber and protein, contributing to improved feed efficiency and milk production. However, alfalfa protein is rapidly and extensively degraded in rumen, and it is a challenge to maximize the efficiency of the forage crude protein utilized as metabolizable protein by ruminant livestock. In this study, the phenotypic data of 14 traits related to forage digestibility were collected from 200 alfalfa accessions planted at three different locations for 2 years. The performance of these accessions showed dramatic variations by location, indicating that environmental factors play important roles in alfalfa digestibility. Twenty-two significant genetic markers associated with 12 traits related to forage digestibility were identified by genome-wide association study. Among them, seven markers were associated with more than one trait, although the significant markers varied by year and location. Putative candidate genes associated with these loci were also identified. The digestibility-related markers and associated genes identified in this study will help to better understand the genetic basis of forage digestibility and its interaction with environments. After validation, the closely linked markers and associated genes can be used for marker-assisted selection of alfalfa with improved forage quality.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438834","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

A crop wild relative inventory for Brazil 巴西作物野生相关库存

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-17 DOI: 10.1002/csc2.70001

Monique Moreira Moulin, Talles de Oliveira Santos, Semiramis Rabelo Ramalho Ramos, Nigel Maxted, Joana Magos Brehm

{"title":"A crop wild relative inventory for Brazil","authors":"Monique Moreira Moulin, Talles de Oliveira Santos, Semiramis Rabelo Ramalho Ramos, Nigel Maxted, Joana Magos Brehm","doi":"10.1002/csc2.70001","DOIUrl":"https://doi.org/10.1002/csc2.70001","url":null,"abstract":"Crop wild relatives (CWRs) are defined as wild plant taxa that are closely related to agricultural crops. In the face of global pressures of climates change and biodiversity loss, CWR requires urgent conservation attention. As a first step toward a national strategy for the conservation of CWRs, we present an inventory of taxa occurring in Brazil, with suggested prioritization of species based on potential value in crop improvement. The CWR checklist comprised 3652 taxa among 112 genera, and after applying the prioritization criteria, 289 CWRs were prioritized. The prioritized CWRs are related to crops of regional, national, and global importance such as cassava (Manihot esculenta Crantz), sugarcane (Saccharum officinarum L.), coffee (Coffea arabica L. and Coffea canephora Pierre ex A. Froehner), cotton (Gossypium hirsutum L.), rice (Oryza sativa L.), orange (Citrus spp.), beans (Phaseolus vulgaris L.), tomato (Solanum lycopersicum L.), potato (Solanum tuberosum L.), and cocoa (Theobroma cacao L.). More than half of the prioritized CWRs (50.86%) are endemic, and 28.03% are nationally endangered. A subsequent prioritization was also carried out using the criteria of socioeconomic value of the related crop and endemism, with 95 taxa being prioritized. The production of the first CWR inventory for Brazil is an important tool for planning conservation actions as part of a national strategy to maintain food security.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423808","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

High-resolution genome-wide association study reveals two genes influencing dietary fiber content in sesame (Sesamum indicum L.) 高分辨率全基因组关联研究揭示两个影响芝麻膳食纤维含量的基因

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-13 DOI: 10.1002/csc2.21438

Guiting Li, Hengchun Cao, Weifei Yang, Ming Ju, Qin Ma, Cuiying Wang, Zhanyou Zhang, Qiuzhen Tian, Jiayuan Chen, Qingli Yuan, Hua Du, Hongmei Miao, Haiyang Zhang

{"title":"High-resolution genome-wide association study reveals two genes influencing dietary fiber content in sesame (Sesamum indicum L.)","authors":"Guiting Li, Hengchun Cao, Weifei Yang, Ming Ju, Qin Ma, Cuiying Wang, Zhanyou Zhang, Qiuzhen Tian, Jiayuan Chen, Qingli Yuan, Hua Du, Hongmei Miao, Haiyang Zhang","doi":"10.1002/csc2.21438","DOIUrl":"https://doi.org/10.1002/csc2.21438","url":null,"abstract":"Dietary fiber is widely recognized for its beneficial effects on human health, and sesame (Sesamum indicum L.) seeds are an important source of dietary fiber. However, efforts to improve sesame for higher fiber have been constrained by limited knowledge of the genetic factors underlying this trait. In this study, we identified a strong correlation between fiber and sugar content, both of which are significantly influenced by genetic factors. A large-scale analysis of 222 sesame germplasm resources revealed genome-wide single nucleotide polymorphism (n = 1,535,018), insertions and deletions (InDels; n = 325,371), and structure variations (SVs; n = 29,028). Linkage disequilibrium and genome-wide association studies identified an InDel quantitative trait locus targeting the SiLAC3 gene, which caused a gene frameshift mutation significantly associated with both sugar and dietary fiber traits. Furthermore, a 1201-bp deletion SV in the coding and 3′ untranslated regions of the SiXTH30 gene was associated with high fiber content. Notably, two accessions (CX150 and CX546) with pyramiding favorable alleles of these two mutated genes exhibited a significant increase in fiber content compared to accessions with only one favorable allele. We also found two candidate genes highly expressed during the early and middle stages of seed development, both of which have been previously reported to play important roles in cell wall fiber content. In conclusion, our findings highlight two key fiber-associated candidate genes, which could serve as valuable resources for molecular breeding aimed at increasing fiber content in sesame seeds.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404659","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

Genome-wide association study for traits related to cold tolerance and recovery during seedling stage in rice 水稻苗期抗寒与恢复相关性状的全基因组关联研究

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-13 DOI: 10.1002/csc2.70003

Khushboo Rastogi, Sumeet P. Mankar, Endang M. Septiningsih

{"title":"Genome-wide association study for traits related to cold tolerance and recovery during seedling stage in rice","authors":"Khushboo Rastogi, Sumeet P. Mankar, Endang M. Septiningsih","doi":"10.1002/csc2.70003","DOIUrl":"https://doi.org/10.1002/csc2.70003","url":null,"abstract":"Rice (Oryza sativa L.), due to its tropical and subtropical origin, is adversely affected by low temperatures below 15°C, restricting growth and yield. During the seedling and vegetative stage, cold stress causes curled leaves, fewer tillers, retarded growth, chlorosis, and necrosis. Due to the significance of this trait, exploring the wealth of genetic resources from a wider pool of germplasm to identify new sources of tolerance will be a crucial step. Toward this goal, we performed a genome-wide association study (GWAS) on a novel diversity panel of 238 rice accessions using the 7K SNP Cornell-IR LD Rice (C7AIR) single nucleotide polymorphism (SNP) array. The experiment was conducted in controlled growth conditions, and rice accessions were evaluated for seven traits and four indices, which were recorded at three different time points, that is, before cold treatment, after cold treatment, and post-recovery phase. A total of 77 significant GWAS-quantitative trait loci (QTLs) were identified for 21 cold tolerance and related traits of interest. Out of these, 34 were detected after cold stress, and 43 were detected during the post-recovery phase. A total of 42 QTL regions were significant at false discovery rate (FDR) < 0.001 and −log10(p-values) > 5. In addition, 31 novel GWAS-QTLs, three colocalized GWAS-QTL hotspots, and eight colocalized GWAS-QTLs for two traits sharing the same genomic location were also identified. The results of this study may help in further elucidating the molecular mechanisms underlying cold tolerance as well as aid in developing climate-smart rice varieties for chilling stress conditions.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404660","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

Integrative effects of organic and inorganic fertilization on soil functions, nitrogen use efficiency, and wheat productivity depend on tillage intensities 有机和无机施肥对土壤功能、氮素利用效率和小麦生产力的综合效应取决于耕作强度

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-12 DOI: 10.1002/csc2.70008

Kashif Akhtar, Ivica Djalovic, Sajjad Zaheer, Ahmad Khan, Muhammad Riaz, P. V. Vara Prasad, Ronghui Wen

{"title":"Integrative effects of organic and inorganic fertilization on soil functions, nitrogen use efficiency, and wheat productivity depend on tillage intensities","authors":"Kashif Akhtar, Ivica Djalovic, Sajjad Zaheer, Ahmad Khan, Muhammad Riaz, P. V. Vara Prasad, Ronghui Wen","doi":"10.1002/csc2.70008","DOIUrl":"https://doi.org/10.1002/csc2.70008","url":null,"abstract":"Nitrogen (N) management and tillage practices influenced sustainability of agricultural systems. We conducted field studies to test the response of the combined organic and inorganic N management on soil properties, N use efficiency (NUE), and wheat (Triticum aestivum L.) production under different tillage intensities in a semiarid climatic conditions. The experiment was designed on a split plot arrangement consisting of three tillage intensities: one time ploughing (T1), two times ploughing (T2), and three times ploughing (T3) with the interval of 10 days in the main plots. Seven organic–inorganic N management strategies using urea:farm yard manures were NM1 0:0, NM2 100:0, NM3 80:20, NM4 60:40, NM5 40:60, NM6 20:80, and NM7 0:100 in the subplots. Results revealed that soil organic carbon (SOC) and labile organic carbon contents were significantly higher in the NM6 treatment under the T3 tillage intensity. Higher soil N and potassium (K) were found in NM5 under the T3 tillage intensity, whereas the soil phosphorus (P) was the highest in NM6 plot. The activities of soil invertase and urease enzymes were also significantly higher in the NM6 treatment under T3 tillage intensity. Wheat growth and yield, N-uptake and NUE were the highest in T3 with NM6 management strategy. Our study demonstrated that integrative N management and tillage practices could improve soil and plant productivity by improving SOC, NUE, and yield, and thus discourage the historical soil health deteriorations of the semi-arid cropping systems.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397078","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

Identification of stem rust resistance genes in monogenic lines derived from wheat cultivar Waldron 小麦品种Waldron单基因系抗茎锈病基因的鉴定

IF 2 3区农林科学

Crop Science Pub Date : 2025-02-07 DOI: 10.1002/csc2.70010

Daryl L. Klindworth, Jyoti Saini Sharma, Justin D. Faris, Timothy L. Friesen, Amanda R. Peters Haugrud, Steven S. Xu

{"title":"Identification of stem rust resistance genes in monogenic lines derived from wheat cultivar Waldron","authors":"Daryl L. Klindworth, Jyoti Saini Sharma, Justin D. Faris, Timothy L. Friesen, Amanda R. Peters Haugrud, Steven S. Xu","doi":"10.1002/csc2.70010","DOIUrl":"https://doi.org/10.1002/csc2.70010","url":null,"abstract":"The wheat (Triticum aestivum L.) cultivar Waldron carries at least six genes for resistance to stem rust caused by Puccinia graminis Pers.:Pers. f.sp. tritici Eriks. and Henn. (Pgt). The identity and map location of some of these genes are known, but there is limited knowledge of SrWld1, an important gene that conditions resistance to all North American Pgt races. Our objective was to identify and map additional stem rust resistance genes in Waldron through aneuploid analysis, allelism tests, and linkage with molecular markers. Four lines, WDR-A1, WDR-C2, WDR-D1, and WDR-E4, each carrying a single stem rust resistance gene from Waldron, were crossed to appropriate genetic stocks. Telosomic analysis failed to confirm the previously reported location of SrWDR-C2 to chromosome 7A. Monosomic analysis, allelism tests, and multi-pathotype seedling tests indicated that the genes in WDR-A1 and WDR-D1 were Sr18 and Sr9g, respectively. Telosomic analysis, allelism tests, and marker analysis of WDR-E4 indicated that SrWld1 should be reassigned from chromosome 2A to 2BL. When families were tested with races LBBLB, TMLKC, and TPPKC, co-segregation of resistance was not observed. This suggests that inheritance of the SrWld1 phenotype was quantitative and that additional studies are needed on the inheritance of SrWld1. When results from this study were combined with previous studies, the stem rust resistance genes in Waldron are identified as Sr9g, Sr11, Sr18, Sr41, SrWld1, and SrWld2.","PeriodicalId":10849,"journal":{"name":"Crop Science","volume":"65 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362460","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