摘要
以6个西瓜品种为参试材料,在温度为12℃,光强为100μmol.m-2.s-1下进行了苗期耐低温弱光性鉴定。结果表明:各个品种的冷害指数、膜透性、MDA均随胁迫时间的延长而增加,而SOD活性、叶绿素含量随着胁迫时间的延长先增加而后降低,Pro因品种不同而呈不同变化趋势。通过计算隶属函数值对低温弱光胁迫下西瓜幼苗各项生理指标进行了综合评价,6个西瓜品种耐低温弱光性由强到弱依次是陇丰早成>陇金兰>京欣一号>美抗九号>陇蜜无籽>金秀。
Six watermelon varieties were studied in order to evaluate their chilling tolerance under the condition of 12℃ temperature and 100μmol · m^-2 · s^-1 light intensity. The results indicted that the chilling injury index of electroytic leakage and MDA contents increased, the activities of SOD and Chlorophy Ⅱ contents rose at first and then decreased, the Proline contents changed with different varieties. With eveluating these index by subordinate function value,the chilling tolerance of these watermelon varieties from strong to weak is Longfengzaocheng〉 Longjinlan 〉Jingxin No. 1〉Meikang No. 9〉Longmiwuzi〉Jinxiu.
出处
《北方园艺》
CAS
北大核心
2008年第4期10-13,共4页
Northern Horticulture
基金
甘肃省科技厅事业费项目(QS041-C31-08)
关键词
西瓜
低温弱光
耐冷性
综合评价
Watermelon
Low temprature and light intensity
Chilling tolerance
Comprehensive evaluation
