Arid
DOI10.1626/pps.11.3
Improving drought-avoidance root traits in chickpea (Cicer arietinum L.) - Current status of research at ICRISAT
Gaur, Pooran M.; Krishnamurthy, Lakshmanan; Kashiwagi, Junichi
通讯作者Gaur, Pooran M.
来源期刊PLANT PRODUCTION SCIENCE
ISSN1343-943X
出版年2008
卷号11期号:1页码:3-11
英文摘要

Chickpea (Cicer arietinum L.), an important food legume grown in the semi-arid tropical and Mediterranean regions, suffers substantial yield loss due to drought at the end of the growing season (terminal drought), as the crop is largely grown rainfed in post-rainy season on progressively receding soil moisture conditions. Root traits have been identified to postpone dehydration (drought avoidance hereafter) under moisture stress. The root length density (RLD) in the relatively shallow soil layers and the maximum root depth (RDp) were found to positively influence the seed yield under terminal drought environments. Considerable progress has been made to improve the methodology for sampling and analysis of roots. Using a PVC cylinder technique, the mini-core collection (n=211) of chickpea germplasm was evaluated for a number of root traits, including root biomass, RLD and RDp. A few germplasm accessions were identified to have a more prolific root system than. the previously identified germplasm line ICC 4958, the best-known source of high root biomass. The germplasm accession ICC 8261 was identified to have the best combination of both RLD and RDp. Molecular markers have been identified for one major quantitative trait locus (QTL) that accounts for about one-third of the variation in root biomass (as measured by total root dry matter) and RDp from study of recombinant inbred lines (RILs) derived from a cross between ICC 4958 and Annigeri. New RIL populations, developed from two other crosses (ICC 8261 x ICC 283 and ICC 4958 x ICC 1882) involving parents having larger variation for root traits than between Annigeri and ICC 4958, are being studied to identify additional QTLs for root traits. Marker-assisted breeding for improvement of root traits in chickpea is expected to promote the development of varieties with greater drought avoidance.


英文关键词chickpea Cicer arietinum L. drought avoidance root traits terminal drought
类型Review
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000252641900001
WOS关键词GRAIN LEGUMES ; WATER-STRESS ; OSMOTIC ADJUSTMENT ; TERMINAL DROUGHT ; LENGTH DENSITY ; SORGHUM LINES ; ABSCISIC-ACID ; YIELD ; GROWTH ; TOLERANCE
WOS类目Agronomy
WOS研究方向Agriculture
来源机构International Crops Research Institute for the Semi-Arid Tropics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158881
作者单位Int Crops Res Inst Semi Arid Trop, Patancheru 502324, Andhra Pradesh, India
推荐引用方式
GB/T 7714
Gaur, Pooran M.,Krishnamurthy, Lakshmanan,Kashiwagi, Junichi. Improving drought-avoidance root traits in chickpea (Cicer arietinum L.) - Current status of research at ICRISAT[J]. International Crops Research Institute for the Semi-Arid Tropics,2008,11(1):3-11.
APA Gaur, Pooran M.,Krishnamurthy, Lakshmanan,&Kashiwagi, Junichi.(2008).Improving drought-avoidance root traits in chickpea (Cicer arietinum L.) - Current status of research at ICRISAT.PLANT PRODUCTION SCIENCE,11(1),3-11.
MLA Gaur, Pooran M.,et al."Improving drought-avoidance root traits in chickpea (Cicer arietinum L.) - Current status of research at ICRISAT".PLANT PRODUCTION SCIENCE 11.1(2008):3-11.
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