Growth and Development of Buckwheat under Differential Temperature Gradients

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Abstract
The ontogenetic cycle of common buckwheat, Fagopyrum esculentum, grown under greenhouse conditions in gravel cultures maintained at uniform levels of nutrient supply, was traced from germination to maturity. Growth and developmental responses of plants whose roots and shoots were maintained at differential temp. were compared with controls in which entire plants were grown at uniformly high or low temp. High air temp. curtailed the vegetative phase and shortened the life span; anthesis occurred earlier and maturity and senescence were rapid at higher air temp. Low air temp. prolonged ontogeny but did not result in any commensurate increase in amt. of plant material produced. Individual growth and developmental responses of plants exposed to differential temp. treatments are discussed in detail.

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