International Journal of Chemical Studies
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P-ISSN: 2349-8528, E-ISSN: 2321-4902   |   Impact Factor: GIF: 0.565

International Journal of Chemical Studies

Vol. 6, Issue 5 (2018)
Thermal requirements of wheat (Triticum aestivum L.) cultivars under different growing environments

Author(s): Arjun Lal Prajapat and Rani Saxena

Abstract: Global warming is changing climate in term of increased frequency of extreme weather events as well as increased air temperature and vapour pressure deficit of air and spatial and temporal change in rainfall. The immediate adverse impact of climate change would be decline in production and productivity of wheat grown in subtropical and tropical region of the world. The paper reviews the current state of knowledge on thermal requirements of wheat (Triticum Aestivum L.) under different growing environments. The review identifies research gaps and suggested temperature plays significant role in physiological, chemical and biological processes of plants. The occurrence of different phenological events during a growing season of crop and the effect of temperature on plant growth can be explained using accrued heat units. Growing degree days are based on the concept that the real time to attain a phenological stage is linearly related to temperature in the range between base temperature and optimum temperature. The heat unit concept assumes that a direct and linear relationship between growth and temperature is advantageous for the assessment of yield potential of a crop in different weather conditions. The duration of each phenophase determines the accumulationand partitioning of dry matter in different parts as well as crop responses to environmental and external factors.

Pages: 17-22  |  681 Views  34 Downloads

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How to cite this article:
Arjun Lal Prajapat, Rani Saxena. Thermal requirements of wheat (Triticum aestivum L.) cultivars under different growing environments. Int J Chem Stud 2018;6(5):17-22.
International Journal of Chemical Studies