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本研究对15个云南不同生态型割手密血缘F1代创新种质材料及其亲系共28个材料,在自然生长与干旱胁迫条件下的生长发育状况密切相关的13个指标进行主成分与模糊聚类分析,综合评价参试材料的抗旱性。试验结果表明:(1)叶绿素因子、地下干物质积累因子和地上干物质积累因子等前6个主成分因子方差累计贡献率达90.11%,可代表原始指标的大部分信息量;(2)利用抗旱性度量值将参试材料聚为4大类6个亚类,聚入第Ⅰ类的共有4个创新种质材料,占参试材料的14.3%,尤其是云割F108-317、云割F108-319表现出较强的抗旱性;第Ⅱ、Ⅲ类材料分别占参试材料的42.9%、39.3%,都分为2个亚类,其中云割F108-392、云割F108-391、云割F108-511、云割F108-397、云割F108-617等5个创新种质材料,可在育种实践中优先利用;云割F108-541单独聚为第Ⅳ类,其抗旱性还有待进一步研究。
In this study, 13 main indexes of 15 germplasm of F1 germplasm with different ecological types in Guizhou province and their relatives of 28 germplasm resources closely related to their growth and development under natural and drought stress conditions were analyzed. Fuzzy clustering analysis to comprehensively evaluate the drought resistance of the tested materials. The results showed that: (1) The cumulative contributions of the variance of the first six principal component factors, such as chlorophyll factor, underground dry matter accumulation factor and ground aboveground dry matter accumulation factor, reached 90.11%, representing most of the information of the original indicator; (2) Drought-resistance measures aggregated the tested materials into four major categories and six sub-categories. A total of four innovative germplasm collections were included in the first category, accounting for 14.3% of the tested materials, especially the mowing F108-317, F108-319 showed strong drought resistance. The materials of type II and III accounted for 42.9% and 39.3% of the tested materials, respectively, which were divided into two sub-categories, of which the mowing F108-392, the mowing F108-391, Five innovative germplasm materials, such as cloud cutting F108-511, cloud cutting F108-397 and cloud cutting F108-617, can be utilized preferentially in breeding practice. further research.