高温干旱强光对猕猴桃生长发育的影响及其生理基础

Effects of High Temperature, Drought and Strong Light on Kiwifruit Growth and Development and Their Physiology

猕猴桃是一种中等喜光性果树,在许多引种栽培地区因高温干旱强光危害而造成落叶落果,果实品质下降,产量和贮藏性降低,甚至导致植株死亡,严重影响其经济效益。高温干旱强光是通过影响冠幕微气候环境、抑制光合作用等生理过程、破坏叶片细胞膜的结构和功能等来影响猕猴桃正常的生长发育,而遮荫、果实套袋等调控措施是缓解这一危害的有效途径。

Kiwifruit is a plant with moderate sunlight requirement. In many kiwifruit growing regions, high temperature, drought and strong light often lead to leaf abscission and fruit drop, reduction of fruit yield. quality and storeability, and even death of the whole plant. Those adverse conditions can affect canopy microclimate, inhabit photosynthesis and other physiological activities, and destruct the structure and function of cell membranes. Some light-temperature reglatory measures, for instance shading and fruit bagging, can effectively overcome the harm.