Genetics of SCMR AND SLA, the Traits Related To Drought Tolerance in Groundnut (Arachis hypogaea L.)

Abstract

An investigation was carried out with the objectives, i) to unravel the nature of gene action for SCMR and SLA, the surrogate traits of drought tolerance and for yield and its contributing traits, ii) to assess the maternal effects for SCMR and SLA in selected parents and their F1 crosses and iii) to assess the carbon isotope discrimination (another surrogate of drought tolerance) among the parental genotypes. The investigation was carried out in alfisols of International Crops Research Institute for Semi-Arid Tropics (ICRISAT) during 2007 rainy season and 2007-08 post rainy season. The experimental material consisted of six-generations (P1, P2, F1, F2, B1, and B2) which were evaluated in randomized complete block design