Defining Selection Indices for Drought Tolerance in Chickpea under Terminal Drought Stresses

Journal of Applied Biological Sciences

Nima BAGHEBANI¹  Mohammad Hossein ENSAFI¹  Ezzat KARAMI¹  Reza TALEBI¹ 

关键词: Chickpea;    drought stress;    tolerance index;    grain yield;   

DOI  :  

学科分类：生物科学（综合）

来源: Nobel Bilim ve Arasirma Merkezi/Nobel Science and Research Cente

【 摘 要 】

Chickpeaimprovementfordroughttolerancerequiresreliableassessmentofdroughttolerancevariabilityamongdifferentgenotypes.Inordertoevaluatequantitativedroughtresistancecriteriainsomechickpeabreedinglines,thirtyfivegenotypeswereevaluatedbothundermoisturestress(E1)andnon-stress(E2)fieldenvironmentsusingarandomizedcompleteblockdesignforeachenvironment.Sevendroughttoleranceindicesincludingstresssusceptibilityindex,stresstoleranceindex,tolerance,yieldindex,yieldstabilityindex,meanproductivityandgeometricmeanproductivitywereused.ThesignificantandpositivecorrelationsofYpand(MP,GMPandSTI)andYsand(MP,GMPandSTI)underboththeseasonsaswellassignificantnegativecorrelationofSSIandTOLinE1revealedthatselectioncouldbeconductedforhighMP,GMPandSTIunderbothenvironmentsandlowSSIandTOLunderE1conditions.ThecalculatedcorrelationcoefficientsrevealedthatSTI,MP,andGMParethesuperiorcriteriaforselectionofhighyieldinggenotypesbothunderE1andE2.Resultsofcalculatedgainfromindirectselectionindicatedthatselectionfrommoisturestressenvironmentwouldimprovegrainyieldinmoisturestressenvironmentbetterthanselectionfromnon-moisturestressenvironment.

【 授权许可】

Unknown