Integrated physiological and molecular approaches to improvement of abiotic stress tolerance in two pulse crops of the semi-arid tropics  

作　　者：arbind k.choudhary rafat sultana m.isabel vales kul bhushan saxena ravi ranjan kumar pasala ratnakumar 

机构地区：[1]ICAR Research Complex for Eastern Region,Patna 800 014,India [2]Bihar Agricultural University,Sabour,Bhagalpur 813 210,India [3]Texas A&M University,College Station,TX 77845,USA [4]International Crops Research Institute for the Semi-Arid Tropics,Patancheru 502 324,India [5]National Institute of Abiotic Stress Management,Baramati 413 115,India

出　　处：《The Crop Journal》2018年第2期99-114,共16页作物学报（英文版）

摘　　要：Chickpea(Cicer arietinum L.) and pigeonpea [Cajanus cajan L.(Millsp.)] play an important role in mitigating protein malnutrition for millions of poor vegetarians living in regions of the semi-arid tropics. Abiotic stresses such as excess and limited soil moisture(water-logging and drought), heat and chilling(high and low temperature stresses), soil salinity, and acidity are major yield constraints, as these two crops are grown mostly under rainfed conditions in risk-prone marginal and degraded lands with few or no inputs. Losses due to such stresses vary from 30% to 100% depending on their severity. The literature abounds in basic information concerning screening techniques, physiological mechanisms, and genetics of traits associated with resistance/tolerance to abiotic stresses in these two crops. However, the final outcome in terms of resistant/tolerant varieties has been far from satisfactory. This situation calls for improving selection efficiency through precise phenotyping and genotyping under high-throughput controlled conditions using modern tools of genomics. In this review, we suggest that an integrated approach combining advances from genetics, physiology, and biotechnology needs to be used for higher precision and efficiency of breeding programs aimed at improving abiotic stress tolerance in both chickpea and pigeonpea.Chickpea(Cicer arietinum L.) and pigeonpea [Cajanus cajan L.(Millsp.)] play an important role in mitigating protein malnutrition for millions of poor vegetarians living in regions of the semi-arid tropics. Abiotic stresses such as excess and limited soil moisture(water-logging and drought), heat and chilling(high and low temperature stresses), soil salinity, and acidity are major yield constraints, as these two crops are grown mostly under rainfed conditions in risk-prone marginal and degraded lands with few or no inputs. Losses due to such stresses vary from 30% to 100% depending on their severity. The literature abounds in basic information concerning screening techniques, physiological mechanisms, and genetics of traits associated with resistance/tolerance to abiotic stresses in these two crops. However, the final outcome in terms of resistant/tolerant varieties has been far from satisfactory. This situation calls for improving selection efficiency through precise phenotyping and genotyping under high-throughput controlled conditions using modern tools of genomics. In this review, we suggest that an integrated approach combining advances from genetics, physiology, and biotechnology needs to be used for higher precision and efficiency of breeding programs aimed at improving abiotic stress tolerance in both chickpea and pigeonpea.

关 键 词：ABIOTIC stresses CHICKPEA GENOMICS GENOTYPING INTEGRATED approach PIGEONPEA 

分 类 号：S[农业科学]