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Influence of Chilling Upon Subsequent Growth and Morphology of Cotton Seedlings
Author(s) -
Christiansen M. N.
Publication year - 1964
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/cropsci1964.0011183x000400060010x
Subject(s) - agricultural experiment station , division (mathematics) , crop , citation , biology , agriculture , horticulture , plant growth , library science , mathematics , agronomy , arithmetic , computer science , ecology
TITTLE information is recorded concerning the influence -" of unfavorably low temperatures above freezing upon subsequent growth of a subtropical heat-loving plant species such as cotton, Gossypium hirsutum L. Most chilling injury research has attempted to determine the immediate effects of subfavorable temperature, with little reference to the influence of chilling upon future growth at favorable temperatures. The results of such research are usually reported in life or death terms. A recent ly published study (5) reported that growth of cotton seedlings was reduced . immediately following chilling. Radicle injury symptoms were described which were thought responsible for seedling growth inhibition. In that report a 5° C. temperature was noted as more injurious than 10° C. Earlier reports by Arndt (1) and Camp and Walker (3) have established 15° C. as near the minimum for germination and growth of cotton. Arndt (2) reported the optimum temperature range for growth is 30-33°. Sellschop and Salmon (6) investigated the influence of chilling upon several species including cotton. Severe leaf necrosis was incited by chilling cotton 48 hours at 2-4° C. Root development was inhibited by chilling 3-week-old plants of cowpea, Vigna sinensis (Torner) Savi. No report has presented evidence of long-term growth patterns following chilling nor evidence of an additive influence of time increments of chilling. The present investigation sought to demonstrate the immediate and long-term effects of different increments of low temperature upon cotton seedling development.