Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2135/cropsci2014.12.0847 |
Assessing Genetic Variability for Root Traits and Identification of Trait-Specific Germplasm in Chickpea Reference Set | |
Lalitha, N.1; Upadhyaya, Hari D.1,2,3; Krishnamurthy, L.1; Kashiwagi, J.1; Kavikishor, P. B.4; Singh, S.1 | |
通讯作者 | Upadhyaya, Hari D. |
来源期刊 | CROP SCIENCE
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ISSN | 0011-183X |
EISSN | 1435-0653 |
出版年 | 2015 |
卷号 | 55期号:5页码:2034-2045 |
英文摘要 | Chickpea (Cicer arietinum L.) is a major grain legume cultivated largely on residual soil moisture in the arid and semiarid regions of the world. Terminal drought stress is one of the major causes of yield loss, and a deep root system has been recognized as one of the most important traits for enhancing drought adaptability. To diversify the current genetic base of root traits, the present study explored the variation for root traits in the reference set of chickpea (n = 300) germplasm. Genetic variability for root traits at 35 d after sowing was assessed using a polyvinyl chloride (PVC) cylinder culture system in two postrainy seasons. Largest genetic variability was observed for dry weights of shoot (broad-sense heritability [h(2)] = 0.69-0.74) and root (h(2) = 0.52-0.70). For root-length density (h(2) = 0.42-0.43) and root/total-plant dry-weight ratio (h(2) = 0.32-0.54), h(2) values were moderate but the variation was large, indicating scope for selection. The performance of the reference set accessions was identified for each of key traits. Accessions with the best root-length densities along with root and shoot dry weights were found to originate from the Mediterranean region and western Asia emphasizing the importance of whole collection from these regions for superior root traits. This study identified 23 new accessions for widening the parental base in further drought tolerance breeding efforts and identified superior traits in already adapted genetic backgrounds. |
类型 | Article |
语种 | 英语 |
国家 | India ; USA ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000365024400015 |
WOS关键词 | CICER-ARIETINUM L. ; TERMINAL DROUGHT STRESS ; MINI-CORE COLLECTION ; SEED YIELD ; CROP IMPROVEMENT ; WATER ; RESISTANCE ; DIVERSITY ; GENOTYPES ; ENVIRONMENTS |
WOS类目 | Agronomy |
WOS研究方向 | Agriculture |
来源机构 | International Crops Research Institute for the Semi-Arid Tropics ; University of Western Australia |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/186621 |
作者单位 | 1.Int Crops Res Inst Semi Arid Trop, Patancheru 502324, Telangana, India; 2.Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA; 3.Univ Western Australia, UWA Inst Agr, Crawley, WA 6009, Australia; 4.Osmania Univ, Hyderabad 500007, Telangana, India |
推荐引用方式 GB/T 7714 | Lalitha, N.,Upadhyaya, Hari D.,Krishnamurthy, L.,et al. Assessing Genetic Variability for Root Traits and Identification of Trait-Specific Germplasm in Chickpea Reference Set[J]. International Crops Research Institute for the Semi-Arid Tropics, University of Western Australia,2015,55(5):2034-2045. |
APA | Lalitha, N.,Upadhyaya, Hari D.,Krishnamurthy, L.,Kashiwagi, J.,Kavikishor, P. B.,&Singh, S..(2015).Assessing Genetic Variability for Root Traits and Identification of Trait-Specific Germplasm in Chickpea Reference Set.CROP SCIENCE,55(5),2034-2045. |
MLA | Lalitha, N.,et al."Assessing Genetic Variability for Root Traits and Identification of Trait-Specific Germplasm in Chickpea Reference Set".CROP SCIENCE 55.5(2015):2034-2045. |
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