摘要
落叶果树需冷量的准确估算是果树栽培尤其是果树促成栽培中的一个关键因素,直接关系到果树促成栽培的成败。综合有关文献,介绍了落叶果树需冷量的概念、估算方法、研究现状、生物学机制和存在问题。低温可以诱导休眠,休眠解除需要低温积累,从植物生理学和分子生物学角度阐述了落叶果树需冷量的机理。并对缩短落叶果树自然休眠期的可能途径从育种、施用外源化学药剂、环境调控3个方面进行了初步探讨。
Exact estimation of chilling requirement is a key f actor affecting the cultivation of deciduous fruit crops,particu-larly for pro tected cultivation of deciduous fruit crops,which is related to the success of the protected cultivation of deciduous fruit crops directly.This paper summariz es the conception,estimating methods,current situation of studies,biological mecha-nisms and problems on chilling requirement of deciduous fruit crops.Do rmancy of deciduous fruit crops can be induced by chilling,and released by chil ling accumulation.The mechanisms of chilling requirement of deciduous fruit cr ops are reviewed from both plant physiology and molecule biology.The possible methods of shortening the natural dormancy period for decidu-ous fruit breeding by applying exogenous chemical medicine and environment regulation are also di scussed.
出处
《果树学报》
CAS
CSCD
北大核心
2003年第5期364-368,共5页
Journal of Fruit Science
基金
江苏省科技攻关项目资助(BE2001325-1)
关键词
落叶果树
需冷量
休眠
机理
Deciduous fruit crop
Chilling requirement
Dormancy
Mecha nisms
