Physiological and Biochemical Basis of Water-Deficit Stress Tolerance in Pearl Millet Hybrid and Parents
作者： T. Vijayalakshmi , Y. Varalaxmi , S. Jainender , S. K. Yadav , M. Vanaja
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摘要: The present investigation was aimed to understand the physiological and biochemical basis of water-deficit stress tolerance in pearl millet [Pennisetum glaucum (L.) R. Br.] hybrid ICMH 356 its parents ICMR (♂) ICMB 88004 (♀) response recovery from drought also comprehend crop adaptation under dryland conditions. A field experiment conducted a split plot design with moisture levels as main genotypes sub plots. comparative analysis well-watered conditions revealed that superior over terms leaf water relations, excised retention capacity, accumulation compatible solutes, photosynthesis, membrane stability index antioxidative enzyme viz., superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), ascorbate peroxidase (APX) guaiacol (GPOX) activities. ANOVA for these parameters found be significant genotypes, treatments their interactions at 0.01% level. Maintenance superiority coupled better ability upon relief are crucial mechanisms contributing deficit millet. Simple correlation coefficient positive association yield level relative content, potential, stomatal conductance, proline, total soluble sugars, free amino acids, index, area biomass, while negative solute potential malondialdehyde clearly indicated such relationships can positively attributed tolerance.
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