Influence of drought and heat stress, applied independently or in combination during seed development, on qualitative and quantitative aspects of seeds of lentil (Lens culinaris Medikus) genotypes, differing in drought sensitivity.

摘要: Terminal droughts, along with high temperatures, are becoming more frequent to strongly influence the seed development in cool-season pulses like lentil. In present study, lentil plants growing outdoors under natural environment were subjected following treatments at time of filling till maturity: (a) 28/23 °C day/night temperature as controls; (b) drought stressed, maintained 50% field capacity, same growth conditions a; (c) heat 33/28 °C temperature, and (d) drought + heat (a). Both resulted marked reduction rate duration decrease final size; damage than stress; combined stresses accentuated starch, storage proteins their fractions, minerals, several amino acids. Comparison a drought-tolerant drought-sensitive genotype indicated former type showed significantly less various components seeds, well stress suggesting cross tolerance, which was linked its (drought tolerant) better capacity retain water leaves hence photo-assimilation ability, compared genotype.