Savita SK, Kenchangoudar PV, Mamata SK, Rajashree B, Nadaf HL and Deshpande SK
Advance breeding lines of groundnut from ICRISAT and UAS Dharwad were evaluated at regional agricultural research station (RARS) at Vijayapur for the study of genetic parameters and relationship between drought related traits viz.,
relative water content (RWC), specific leaf weight (SLW) and SPAD chlorophyll meter reading (SCMR) and pod yield associated characters under normal rainfed condition. Analysis of variance revealed significant differences among advance breeding lines and indicate existence of considerable genetic variability for drought and pod yield related traits. The magnitude of PCV, GCV, heritability and genetic advance as per cent
of mean were high for number of primary branches per plant (NPBP), number of secondary branches per plant (NSBP), number of immature pods per plant (NIMP), number of mature pods per plant (NMPP) and moderate for pod yield, hundred kernel weight (HKW) and SLW recorded at 45th
days after sowing (DAS) and 75th
DAS. This indicate traits are mainly governed by additive gene action, less of environment influence and response to selection. RWC at 75th
DAS, SLW at 45th
DAS and SCMR showed significant positive association with pod yield. Therefore, better scope exists for these characters for improvement under drought or water deficit conditions in advance breeding lines of groundnut.
Savita SK, Kenchangoudar PV, Mamata SK, Rajashree B, Nadaf HL and Deshpande SK. Studies on variability and genetic association of drought and yield related traits in advance breeding lines of groundnut (Arachis hypogaea L.). J Pharmacogn Phytochem 2019;8(1):2145-2148.