黄瓜核心种质芽期低温耐受性鉴定评价  

Cold Tolerance Identification at Germination Stage of Cucumber Core Germplasm

作　　者：王红飞[1] 李锡香[1] 董洪霞[1] 王海平[1] 宋江萍[1] 邱杨[1] 张晓辉[1] 沈镝[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《植物遗传资源学报》2016年第1期6-12,共7页Journal of Plant Genetic Resources

基　　金："十二五"农村领域国家科技计划课题(2013BAD01B04-7);农业部园艺作物生物学与种质创制重点实验室项目

摘　　要：以15℃为胁迫温度,以相对发芽率、相对发芽势、相对发芽指数、相对胚根长度、相对鲜重、相对干重为评价指标,对65份黄瓜核心种质进行芽期低温耐受性鉴定评价,结果显示,参试材料的6项指标差异显著,变化范围分别为1.00%-123.00%、0-112.00%、0-70%、13.00%-109.00%、0-100.00%、0-101.00%。表明大部分参试材料在不同程度上受到低温条件的影响,发芽时间推迟、种子活力降低、种芽生长量减少,而少部分材料的种子活力在15℃低温条件下与对照相比差异不明显。利用6项指标的平均隶属度、聚类分析进行综合评价,共筛选出7份芽期强耐冷的黄瓜材料,来源于印度、日本、匈牙利、土耳其及我国的吉林省、河北省、重庆市。65 core germplasms were identified and evaluated under 15℃ and the indexes of evaluation including relative germination percentage,relative germination power,relative germination index,relative radicle length,relative fresh weight and relative dry weight at the stage of germination. The results showed that the difference of six indexes were significant and the range were 1. 00%- 123. 00%,0- 112. 00%,0- 70%,13. 00%- 109. 00%,0- 100. 00%,0- 101. 00% respectively,showing that the seeds vigor and growth ability of most materials were influenced by low temperature and just some of them expressed no obvious difference comparing with CK. 7 accessions with extremely high tolerance were screened out,deriving from India,Japan,Hungary,Turkey,Jilin province,Hebei province,Chongqing Municipality.

关 键 词：黄瓜 核心种质 芽期低温耐受性 鉴定评价 

分 类 号：S642.2[农业科学—蔬菜学]