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Effect of Photoperiod and Temperature on Cold Hardening in Winter Wheat 1
Author(s) -
Paulsen Gary M.
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/cropsci1968.0011183x000800010009x
Subject(s) - photoperiodism , hardening (computing) , biology , cold hardening , sugar , dry matter , horticulture , sucrose , botany , zoology , chemistry , food science , organic chemistry , layer (electronics)
Changes in hardiness and plant constituents associated with hardening were observed in ‘Pawnee’ winter wheat under constant and under decreasing photoperiod and temperature treatments. Hardening occurred only when the temperature decreased, and was greater under a constant long photoperiod than under a decreasing photoperiod. Least hardening occurred when the photoperiod was decreased and the temperature remained constantly high. Changes in dry matter, reducing sugar, sucrose, and free amino acid contents of wheat crowns paralleled changes in hardiness. Soluble protein content of crowns was increased by decreasing photoperiod as well as by decreasing temperature.