棉花学报2012，Vol.24Issue(2)：176-182,7.
棉花钾营养效率的基因型差异研究进展
Review of Genotypic Differences and Underlying Mechanisms in Potassium Efficiency of Cotton ( Gossypium hirsutum)
摘要
Abstract
Potassium (K) is a major plant nutrient with many biochemical and physiological functions. Cotton has a high demand for K. However, widespread K deficiency in cotton occurs in many countries. Cotton varieties differ in their K uptake efficiency. This review accessed the available literature on K uptake and utilization efficiency in cotton related to genotype differences. Genotypes efficient in K uptake may have a larger root system and/or efficient physiological uptake characteristics (such as greater /?? [maximum influx rate], and lower K^ [the Michaelis constant] and C? [the minimum concentration for net uptake]). Furthermore, genotypes efficient in K utilization may have active K transport and remobilization, high net photosynthetic ability, better balance between carbon and nitrogen metabolism, greater ability to scavenge reactive oxygen species, and increased capacity to substitute Na+ for K+. Future research areas regarding K efficiency in cotton are suggested.关键词
棉花/钾/基因型差异/吸收效率/利用效率Key words
cotton/ potassium/ genotypic variation/ uptake efficiency/ utilization efficiency分类
农业科技引用本文复制引用
展曼曼,王宁,田晓莉..棉花钾营养效率的基因型差异研究进展[J].棉花学报,2012,24(2):176-182,7.基金项目
国家自然科学基金(30571118,30971708) （30571118,30971708）
