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Accumulation of Simple Sugars in Developing Cotton Bolls as Influenced by Night Temperatures 1
Author(s) -
Conner J.W.,
Krieg D.R.,
Gipson J.R.
Publication year - 1972
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/cropsci1972.0011183x001200060010x
Subject(s) - sucrose , fructose , biology , gossypium hirsutum , malvaceae , sugar , elongation , fiber crop , gossypium , botany , horticulture , food science , materials science , metallurgy , ultimate tensile strength
Cotton plants ( Gossypium hirsutum L. var. Dunn 56 C) growing in the field were subjected to four different night temperature regimes (10, 15, 20, and 25 C) during the boll development phase. Total and individual sugars were determined on developing bolls ranging in age from 0 to 45 days. Total soluble sugars were found to be directly associated with temperature, with the lowest concentration occurring in the 10‐C treated bolls, and the highest concentration in the 25‐C treated bolls for the first 15 days. After 15 days this relationship was reversed. Definite time‐temperature relationships that were apparently associated with the cessation of fiber elongation and the initiation of secondary wall formation were noted. The principal sugars present were glucose, fructose, and sucrose. The concentration of each varied with boll age and temperature treatment.