摘要
【目的】确定新疆杏品种抗寒力的相对强弱顺序,为新疆杏品种区化和新品种推广提供抗寒性依据,为育种利用提供参考。【方法】采用电导法、恢复生长法和应用Logistic方程求出拐点温度(半致死温度—LT50),确定供试品种的抗寒力。【结果】供试的13个品种中,紫杏、大果胡安娜、阿克牙格勒克抗寒性强,可抗-31℃低温;冬杏、赛买提、佳娜丽、安江胡安娜的抗寒性较弱,只能抗-22℃左右低温。【结论】通过恢复生长法观察杏不同品种的可逆反应证实,电导法和应用Logistic方程相配合测得杏树品种的抗寒力,其结果比较准确。试验的杏品种处在-21^-30℃时,多数会受到不同程度的伤害,其下限可造成不可逆转的损伤。
[ Objective]To provide basis and reference for breeding and spreading new varieties of apricot, this paper was designed to select and determine the apricot varieties with high quality and cold resistane in Xinjiang. [Method] Cold resistane of 13 experimental varieties in Xinjiang were defined by electrolyte leakage and the restoration growing method and inflection temperature （median lethal temperature LT50 ） and application of Logistic equation. [ Result] Zixing, Daguohuanna, akyaklek have strong cold resistance in 13 experimental varieties, they can be resistant to - 31 ℃ low temperature（ L. T）. Dongxing, Saimaiti, Jianali, Anjianghuanna have weak cold resistance in 13 experimental varieties, they can be resistant to -22℃ low temperature. [ Conclusion]The result showed that cold resistance of apricots were defined by electrolyte leakage and inflection temperature and it were confirmed by the restoration growing method. Majority of varieties tested have been injured, when temperature is between - 21 ℃ -30℃. It cannot be reversed, when temperature is -30 ℃.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2010年第4期722-725,共4页
Xinjiang Agricultural Sciences
基金
国家科技支撑项目"杏专用品种优选及高效栽培技术研发与示范"(2007BAD36B06-1)
新疆维吾尔自治区科技成果转化基地项目"南疆优质杏科技成果转化示范基地"(200554123-15)
新疆维吾尔自治区重大专项"新疆杏资源农艺形状基础数据库建立与产地环境评价"(2000831108-3)
新疆维吾尔自治区林果科技专项"新疆抗寒果树资源汇集"
"新疆主要果树品种抗寒力测定与评价"
关键词
新疆
杏
抗寒性
电导率
半致死温度
Xinjiang
apricot
cold resistance
electrolyte leakage
median lethal temperature
