黄瓜苗期耐高温性鉴定  

Screening of Heat-tolerance of Cucumber at Seedling Stage

作　　者：韩毅科[1] 杜胜利[1] 张桂华[1] 魏爱民[1] 刘楠[1] 哈玉洁[1] 

机构地区：[1]天津科润黄瓜研究所,天津300192

出　　处：《中国瓜菜》2009年第3期1-4,共4页China Cucurbits And Vegetables

基　　金：国家863计划项目(2003AA207110)

摘　　要：选用耐高温和不耐高温的黄瓜高代自交系15份,在人工气候箱(SANYOMLR-350T)条件下进行耐高温筛选试验。通过设置不同的温度和光照条件,研究幼苗的生长发育,最终确定了如下耐高温鉴定筛选条件:采用36℃/3h～40℃/4h～36℃/3h光照,26℃/14h黑暗条件进行高温胁迫处理;确定了与耐高温性状相关性密切的几个形态指标,依次为总叶面积、叶片数、株高和茎粗,其权重系数分别为0.5、0.3、0.1和0.1,并根据植株的苗端分化和株型情况进行总体评价。Fifteen cucumber inbred lines of heat-tolerant and heat-sensitive were studied in controlled environment chamber to screen the heat-tolerance ability. With different temperature and light condition, heat-tolerant screening system was developed. The effective screening condition for high temperature stress treatment is in light with fluctuating temperatures of 36 ℃-3 h ＋ 40 ℃-4 h ＋ 36 ℃-3 h and in dark with temperature of 26 ℃-14 h. The highly correlative morphological indexes to heat-tolerant character are total foliage area, number of leaf, plantlet height and stem diameter; and the weight is 0.5,0.3,0.1 and 0.1, respectively. A overall assessment should be taken based on shoot apex differentiation and plantlet morphology.

关 键 词：黄瓜 苗期 耐高温 鉴定 

分 类 号：S642.2[农业科学—蔬菜学] TQ633[农业科学—园艺学]