中国蔬菜Issue(3)：17-24,25,9.
黄瓜低温耐受性鉴定方法的初步研究
Preliminary Studies on Identification Method for Cucumber Tolerance to Low Temperature
摘要
Abstract
In this study,methods for identifying cucumber germplasm tolerance to low temperature at germination and seedling stages were compared systematically. First,the cold tolerance of 15 materials were— 24 —identified under 13℃and 15℃(CK:26℃),respectively using 6 indexes including germination percentage, germination power,germination index,radicle length,fresh weight and dry weight of seed buds. The results showed that 13℃was suitable for screening materials with strong tolerance to low temperature,while 15 ℃was suitable for evaluating cold tolerance of cucumber germplasm resources at budding stage. In addition,different treatments with stress duration under low temperature at the seedling stage were analyzed and compared taking injury index and recovery index as evaluation indexes. Treating cucumber seedlings under 6 ℃ constant low temperature,we found that 3-5 days were the suitable treatment of stressed time. While under 15℃/5℃variable temperature conditions,we found the suitable treatment of stressed time was 9-15 days. Taking recovery index as evaluation index to identify seedling tolerance to low temperature,we found that the days under stress condition could be 1-2 days shorter than that taking injury index as evaluation index.关键词
黄瓜/种质资源/低温耐受性/鉴定评价Key words
Cucumber/Germplasm resource/Tolerance to low temperature/Identification and evaluation引用本文复制引用
王红飞,李锡香,王海平,宋江萍,邱杨,张晓辉,沈镝..黄瓜低温耐受性鉴定方法的初步研究[J].中国蔬菜,2015,(3):17-24,25,9.基金项目
“十二五”国家科技支撑计划项目（2013BAD01B04-7），农业部园艺作物生物学与种质创制重点实验室项目 （）
