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Cereal Research Communications

, Volume 38, Issue 4, pp 514–520 | Cite as

Grain yield in wheat as affected by short periods of high temperature, drought and their interaction during pre- and post-anthesis stages

  • Vikender KaurEmail author
  • R. K. Behl
Physiology

Abstract

Drought and high temperature are especially considered as key stress factors with high potential impact on crop yield. The aim of this study was to investigate the effect of short periods of high temperature, drought and their combination at different growth stages of plant under controlled conditions. The effects of high temperature and drought on grain yield were additive. However, high temperature increased the degree of water stress and the combined effects of drought and high temperature were much more severe than those of each individual treatment. High temperature and drought applied at post- anthesis shortened duration of maturation, grain filling duration and reduced grain yield, mean grain weight, grain number and thousand-grain weight.

Keywords

wheat grain weight grain number high temperature drought grain yield test weight 

Abbreviations

HT

high temperature

D

drought

HT + D

high temperature + drought

DAA

days after anthesis

DAS

days after sowing

PWP

permanent wilting point

RH

relative humidity

DOM

duration of maturation

GFD

grain filling duration

S1

Booting stage

S2

Post-anthesis stage

S1 + S2

Booting + post-anthesis stage

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Copyright information

© Akadémiai Kiadó, Budapest 2010

Authors and Affiliations

  1. 1.Department of Botany and Plant PhysiologyDepartment of Plant Breeding CCS HAUHisarIndia

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