Effects of high atmospheric CO2 and heat stress on phytomass, yield and grain quality of winter wheat

Szilvia Bencze, O. Veisz, Z. Bedő

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Three winter wheat varieties were grown in growth chambers under controlled environmental conditions at two atmospheric CO2 concentrations (375 and 750 μmol*mol-1) with either an ambient temperature regime or with heat stress during grain filling (max 35°C, 8 hours a day for 15 days). Data on the aboveground biomass, tiller and ear number, yield components, harvest index, the protein content of the wholemeal and the functional parameters of the flour were determined after harvest. Mv Martina, a variety with very high yield potential, responded very positively to CO 2 treatment, exhibiting an increase in the tiller and ear number and in the number of grains per plant, resulting in 38 % higher yield without a deterioration in the grain quality. Neither CO2 nor heat stress had a negative effect on the flour quality of this variety as the protein content and SDS sedimentation volumes increased in both treatments. Increased CO 2 had less influence on the yield of the other varieties, where the grain quality either decreased or remained at a similar level after CO 2 enrichment. Heat stress had a negative effect on TKW and grain yield, but this could be counterbalanced by elevated CO2 level in two varieties. Elevated CO2 and high temperature had opposite effects on the protein and gluten contents (except in Mv Martina), but the gluten index was lowest when both factors were present.

Original languageEnglish
Pages (from-to)75-82
Number of pages8
JournalCereal Research Communications
Volume32
Issue number1
Publication statusPublished - 2004

Fingerprint

Carbon Monoxide
Triticum
heat stress
winter wheat
Glutens
Hot Temperature
Flour
Ear
Temperature
gluten
flour
ears
Biomass
protein content
Proteins
harvest index
filling period
growth chambers
yield components
aboveground biomass

Keywords

  • Elevated CO
  • Grain quality
  • Heat stress
  • Winter wheat
  • Yield

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Effects of high atmospheric CO2 and heat stress on phytomass, yield and grain quality of winter wheat. / Bencze, Szilvia; Veisz, O.; Bedő, Z.

In: Cereal Research Communications, Vol. 32, No. 1, 2004, p. 75-82.

Research output: Contribution to journalArticle

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