Correlation between Yield of Wheat and Temperature during Ripening of Grain

Abstract

DURING the last five years investigations have been undertaken at this Institute for evolving a reliable method for obtaining varieties of wheat best suited to 'dry' as well as irrigated tracts, and also for determining their drought resistance. To achieve this purpose, a large number of exotic and Indian varieties of wheat (260 in all) have been grown on dry and irrigated plots of well-manured land at Delhi, Karnal and Pusa. The Indian varieties used in these experiments were representative of the important wheat-growing tracts of this country with their vegetative period ranging from 90 to 130 days, while the exotic varieties with a range of 90–170 days were representative of the important wheat belts of Canada, the U.S.S.R., Great Britain, Australia and other countries. All these varieties form a part of the large collection of wheat varieties maintained at this Institute.