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Effects of a Suboptimal Temperature on the Free Amino Acid Composition of Bean Seedlings 1
Author(s) -
Knull H. R.,
Kinbacher E. J.
Publication year - 1968
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1968.0011183x000800010012x
Subject(s) - phaseolus , biology , amino acid , asparagine , composition (language) , nitrogen , botany , chemical composition , biochemistry , food science , horticulture , chemistry , organic chemistry , linguistics , philosophy
Phaseolus vulgaris L. var. ‘Michelite’ was grown at an optimal temperature, 25 C, and a suboptimal temperature, 18 C. Seeds and seedlings were divided into different mmorphological sections at three stages of growth and analyzed for total nitrogen and 20 free amino acids. Significant differences in the free amino acid composition of seedlings at comparable stages of growth were observed between the two temperatures. Before the cotyledons emerged through the growth medium, the plants grown at 25 C were higher in free amino acids. At the time of their emergence through the growth medium, the seedlings grown at the suboptimnal temperature were higher in free amino acids. Asparagine was the most abundant free amino acid detected in all seedlings.