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

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.

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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Correspondence to Vikender Kaur.

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Communicated by A. Aniol

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Kaur, V., Behl, R.K. Grain yield in wheat as affected by short periods of high temperature, drought and their interaction during pre- and post-anthesis stages. CEREAL RESEARCH COMMUNICATIONS 38, 514–520 (2010). https://doi.org/10.1556/CRC.38.2010.4.8

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Keywords

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