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прикладных исследований

EFFECT OF SOIL AND CLIMATIC CONDITIONS ON PHENOLOGY OF SPRING WHEAT VARIETIES IN THE NORTHERN BANGLADESH

2012. №2, Стр. 86-93

Акбар Хоссаин  - аспирант, Астраханский государственный университет, tanjimar2003@yahoo.com

Лозовская Марина Вячеславовна - доктор биологических наук, профессор, Астраханский государственный университет, tanjimar2003@yahoo.com

Зволинский Вячеслав Петрович - доктор сельскохозяйственных наук, профессор, Прикаспийский научно-исследовательский институт аридного земледелия, www.pniiaz.ru

Хайме А. Тейшейра да Силва  - Факультет сельского хозяйства и Высшая школа сельского хозяйства, Кагава Университет

Plant growth and crop yield depends on temperature and temperature extremes. Crop yield is affected by net primary productivity and also by phenology during crop development. Increased temperature can speed up phenological development, shorten the life span, reducing the grain-filling period and lowering yield. Through global warming, an anticipated increase in temperature would reverse the effects of vernalization in wheat. In the present study, high temperature stress enhanced the phenology and growth of wheat. The number of days to first visible awn, heading, physiological maturity and ripe harvest were significantly decreased under heat stress and the response varied among the genotypes, ultimately affecting growth and yield (data not presented). Among these varieties, Shatabdi took the longest time to mature in all sowing conditions, followed by Sourav, while other varieties showed little variation and took statistically similar and fewest days to mature under stress. Generally, due to high temperature stress, the length of life cycle stages was reduced. When seeded on 22 November (optimum seeding), all varieties performed better than under stress conditions.

Ключевые слова: soil-climatic factors, wheat, varieties, phenology, northern Bangladesh

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