Physiological characterisation of green gram (Vigna radiata L.) genotypes for drought tolerance

Abstract

Drought is the major constrains faced in rainfed areas so Screening of genotypes for drought tolerance is the need of the day, by using physiological traits as a parameter The present investigation was designed out in in-vitro and in-vivo conditions. In-vitro PEG6000 is used as a drought inducer to screen 17 genotypes based on seed vigour 7 best genotypes were selected for in-vivo. Field trail with 7 genotypes Based on field capacity different water treatments are taken to impose drought stress on green gram genotypes such as 100%, 80%, 50% and 30% irrigated conditions Among the genotypes protein content % KM-1423 and IPM 02-3, carotenoids KM-1423 and KM-1409, relative water content KM-1423 and IPM 02-14, chlorophyll a KM-1423 and KM-1415 and chlorophyll b, KM-1423 and IPM 02-14, Total chlorophyll KM-1423 and IPM 02-14 and proline content were found as KM-1423 and IPM 02-14. Over the genotypes KM-1423 found to be highly suitable for under both irrigated as well as rain fed conditions.