摘要
为探明影响野生杏花期冻害率、败育率和座果率高低的因素,对伊犁不同地区(四个县)及不同类型的野生杏调查研究结果显示:(1)冻害率在4个不同纬度地区间有显著差异。位于较低纬度的新源县冻害率最高(达57%),位于较高纬度的巩留县冻害率最低(仅4.4%),败育率则是巩留县最高,与其他地区间差异极显著;(2)海拔高度为1300 m时的冻害率为21.4%,而其他高于或低于海拔1300 m的地区则都显著高于1300m处的冻害率,败育率在较低海拔(900 m)地区显著低于其他各海拔高度地区;(3)野生甜仁杏的冻害率显著低于野生苦仁杏,且其败育率也低于野生苦仁杏。座果率则是野生甜仁杏显著高于野生苦仁杏。综合分析得出野生杏花期受冻程度与纬度、海拔高度和杏树的类型有关,败育率和座果率则与纬度和海拔没有必然的相关性,而与其类型有关。野生甜仁杏的抗冻性较野生苦仁杏强。
Study on the freezing injury was carried out during the flowering stage, abortive percentage and the fruit set counties of wild apricot in four counties of Yili region. The investigation results in the four areas indicated that the rate of freezing injury reached 57 % after the frost in Xinyuan county where the latitude was only 4.4 % in Gongliu county which is located at higher latitude;The freezing injury was significandy different from other two areas.The rate of freezing injury was 21.4% when altitude was 1 300 m. And the rate of freezing injury of other areas, whose altitude was higher or lower than 1 300 m, was significantly higher than 1 300 m. Abortive percentage of the area, whose altitude was lower than 900 m, was significantly lower than that of other areas, whose altitude was high;The rate of freezing injury of wild sweet kemal type was significantly lower than that of wild bitter kemal type and its abortive percentage was lower than that of wild bitter kemal type. Fruit set percentage of wild sweet kemal type was significantly higher than that of wild bitter kemal type. The comprehensive analysis indicated that the degree of freezing injury of wild apricot was related to latitude, altitude and type of apricot its abortive percentage and fruit set percentage were related to latitude and altitude. The resistance to coldness of wild sweet apricot was stronger than that of wild bitter one.
出处
《新疆农业科学》
CAS
CSCD
2007年第2期122-125,共4页
Xinjiang Agricultural Sciences
基金
新疆维吾尔自治区科技厅特培项目"伊犁野山杏砧木优良品系的选育"(2005-20)
关键词
野生杏
花期
冻害
败育率
座果率
wild apricot
flowering stage
freezing injury
abortive percentage
fruit set percentage
