摘要
为筛选耐高温的西葫芦(Cucurbita pepo L.)种质材料,本试验以30份西葫芦种质资源为材料,分别设置了常温、高温两组不同温度处理,测定了不同处理后7 d的生长指标(株高、茎粗、全株叶面积、地上部鲜重、地上部干重、地下部鲜重、地下部干重)、相对电导率、丙二醛含量及热害指数.结果表明:高温下30份西葫芦种质资源的各项指标均呈显著性差异.根据聚类分析及隶属函数分析,可将30份西葫芦种质资源分为高温耐受性强、中、敏感三大类,筛选强高温耐受性品种为11号、27号、3号、8号、4号.相对电导率与丙二醛含量与热害指数有较高的相关性,可以作为评价西葫芦种质资源耐高温能力的快捷评价指标.
Abstract
In order to screen high temperature resistant zucchini(Cucurbita pepo L.)germplasm materials,30 zucchini germplasm resources were used as materials.The growth indexes(plant height,stem diameter,total leaves area,shoot fresh weight,shoot dry weight,root fresh weight,root dry weight),relative conductivity,MDA content and heat injury index were measured after 7 days under different treatments.The results showed that the indexes among the 30 zucchini germplasm resources were significantly different under high temperature.Based on cluster analysis and subordinate function analysis,the 30 zucchini germplasm resources can be divided into three categories:tolerance,moderate and sensitive,the varieties with high temperature tolerance were screened as No.11,27,3,8,and 4.There is a high correlation among relative conductivity,MDA content and heat injury index,which can be used as a quick evaluation index to evaluate the high temperature tolerance of zucchini germplasm resources.
国家科技期刊平台
NSTL
万方数据