Physiological Basis of Cytokinin induced Drought Tolerance in Wheat (Triticum aestivum L.)

Authors

  • SHARAD KUMAR DWIVEDI ICAR RESEARCH COMPLEX FOR EASTERN REGION, PATNA
  • SANTOSH KUMAR ICAR RESEARCH COMPLEX FOR EASTERN REGION, PATNA
  • SURAJIT MONDAL ICAR RESEARCH COMPLEX FOR EASTERN REGION, PATNA
  • NUPUR MALVIYA IIPR, Kanpur
  • RACHNA DUBEY Directorate of Water Management, Bhubaneswar

Abstract

Understanding of physiological mechanisms that enable wheat (Triticumaestivum L.)plants to adapt to water deficit stress condition and maintain growth and productivity during stress period is very  important.Experiments werecarried out to screen the twenty five minicore wheat germplasms for water deficit stress tolerance and to study the effect of cytokinin (BA;40 µM) on physiological traits, photosynthesis and gas exchange parameters under two different water regimes in four contrasting wheat cultivars viz., HD 2987 and DBW 44 (relatively drought tolerant), HD 2888 and HD 2733 (relatively drought susceptible),differing in their tolerance to drought. Sampling was done at vegetative growth stage (35-40DAS) of wheat development. Study revealed that there was reduction in plant water status (RWC), membrane stability index (MSI), photosynthetic efficiency (Chlorophyll and photosynthesis) during water deficit stress condition. Application of cytokinin improves the physiological traits in terms of MSI, RWC, and photosyntheticrateat the vegetative stage of wheat.

Author Biographies

SHARAD KUMAR DWIVEDI, ICAR RESEARCH COMPLEX FOR EASTERN REGION, PATNA

Scientist, Plant Physiogist, Division of crop research, ICAR RESEARCH complex for eastern region

SANTOSH KUMAR, ICAR RESEARCH COMPLEX FOR EASTERN REGION, PATNA

Scientist, Plant Breeder, Division of crop research, ICAR RESEARCH complex for eastern region

SURAJIT MONDAL, ICAR RESEARCH COMPLEX FOR EASTERN REGION, PATNA

Scientist, Soil Physics

NUPUR MALVIYA, IIPR, Kanpur

Senior Research Fellow (Plant Breeder)

RACHNA DUBEY, Directorate of Water Management, Bhubaneswar

Scientist, Environmental science

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Published

2014-09-07

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