Physiological, biochemical and molecular responses of lentil (Lens culinaris Medik.) genotypes under drought stress

摘要: Lentil (Lens culinaris Medik.) is an important pulse crop in India. It moderately tolerant to drought, however intermittent and terminal drought significantly reduce lentil productivity. Selection of appropriate parent for breeding resistant variety a challenging task. Thus, the present work response eight genotypes (GP3690, LL1136, GP3643, NDL908, KLS218, IC248956, PL230, L4076) has been analysed, by imposing stress using PEG 6000 (18% w/v) 15 days. Various physiological (stomatal density, relative water content) biochemical parameters (total chlorophyll, total soluble sugar, anthocyanin proline contents, lipid peroxidation, superoxide dismutase catalase activities) were analysed under stress. These further evaluated analysing expression marker genes (DREBs RDs) which suggested GP3690 as susceptible (DS) GP3643 IC248956 (DT). Relative forty-three responsive related various molecular functions, like biosynthetic process, redox homeostasis defence these three genotypes, revealed that alters metabolic biosynthesis processes plant overcome drought. This study provides basic information on tolerance capacity which may be ascertained at field level.