春秋两季马铃薯微型薯休眠期及发芽特性比较分析  

Comparison of Dormancy and Sprouting between Potato Minitubers Produced in Spring and Autumn Seasons

作　　者：樊荣[1] 宋波涛[1] 谢从华[1] 柳俊[1] 

机构地区：[1]国家蔬菜改良中心华中分中心,湖北省马铃薯工程技术研究中心,华中农业大学,湖北武汉430070

出　　处：《中国马铃薯》2009年第5期277-280,共4页Chinese Potato Journal

基　　金：现代农业产业技术体系建设专项资金资助

摘　　要：本研究以Favorita和南中552两个早熟品种的微型薯为试验材料,对春秋两季生产的微型薯在4℃和20℃条件下贮藏的休眠期及其发芽动态进行了系统观察。结果表明,两个基因型在20℃和4℃下贮藏,春季微型薯休眠期比秋季分别短30d左右和60d左右,有光贮藏的微型薯打破休眠的时间比黑暗贮藏时分别延长一周和两周。块茎打破休眠后,发芽动态呈"S"曲线,但生产季节、贮藏温度间存在显著差异。春季微型薯发芽持续时间均长于秋季微型薯,低温贮藏使发芽持续时间更加延长。The dormancy and sprouting were monitored and compared during storage at 4 and 20℃ between potato minitubers produced from two early potato cuhivars, Favorita and Nanzhong 552, in spring and autumn seasons. The results showed that spring produced minitubers had shorter dormancy than autumn produced ones as indicated by the difference of about 30 days when stored at 20℃ and 60 days at 4℃. Exposure to light prolonged dormancy for one week at the high temperature storage and for two weeks at the low temperature compared with the storage in the dark. After dormancy breaking, percentage of sprouting followed a sigmoid curve but significant variations were observed between production seasons and storage temperatures. A longer period of sprouting was accompanied with spring produced minitubers and those stored at the low temperature with reference to the minitubers produced in autumn and those stored at the high temperature.

关 键 词：马铃薯 微型薯 休眠期 发芽一致性 

分 类 号：S532[农业科学—作物学]