Genetic Variability and Heritability Studies in F_2 Generation of Six Single Crosses of Groundnut (Arachis hypogaea L.)

摘要

GROUNDNUT is the major oilseed crop in India and in Andhra Pradesh. In Andhra Pradesh, it is being grown in an area of 19.25 lahk ha with a production of 17.19 lakh tonnes and with a productivity of 924 kg ha-1 (Annual Report, 2004) and is mainly cultivated as rainfed crop during kharif season in dry lands where the most important abiotic stress factor limiting groundnut yield is drought. The productivity is considered to be low because groundnut is predominately grown under rainfed (80%). Yield is also affected by moisture stress during critical stages of crop growth and pod formation. In this situation, varieties that could perform better under moisture stress are needed. Thus the present investigation was carried out to the coefficient of variation for pod yield and its attributes.