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基于农艺性状和纤维品质对61份彩色棉种质材料进行鉴定分析,结果表明:材料间衣分、2.5%跨长、马克隆值呈极显著差异,整齐度、伸长率、比强度和单株铃数存在显著差异,株高、果枝数、单铃重差异不显著;供试材料纤维品质较差,除中国农业科学院棉花研究所选育的棕125、棕絮1号等材料外,大部分种质系2.5%跨长、比强度等指标不能满足纺织工业的需求,但仍有31份种质系单一性状较优,如棕2-63(IAA)、棕3-944等。采用类平均法对供试材料进行聚类分析,61份材料聚为7个类群,供试材料表现型性状相似较低,尤其部分基础彩色棉遗传材料与其他材料相似性极低,单独构成一类,如皱缩红鸡角叶棕絮、hunan绿等。综合分析表明,供试材料农艺性状和纤维品质较差,遗传多样性较丰富。
Based on the analysis of agronomic traits and fiber quality, 61 varieties of cotton germplasm were identified and analyzed. The results showed that there was significant difference in the inter-material percentage, 2.5% cross-length and micronaire value, and the uniformity, elongation, There were significant differences in the number of bolls per plant, but there was no significant difference in plant height, fruit branch number and single boll weight. The fiber quality of the tested materials was poor. Except for the materials such as Brown 125 and Brown Flour No. 1 selected by the Cotton Research Institute of Chinese Academy of Agricultural Sciences, Some germplasm lines with 2.5% span length and specific strength could not meet the needs of the textile industry. However, 31 germplasm lines still had better single traits, such as IAA and Palm 3-944. Cluster analysis of the tested materials by the method of averaging showed that 61 materials clustered into seven groups, and the phenotypic traits of the tested materials were relatively low. In particular, some of the basic colored cotton genetic materials had very low similarity with other materials and formed a single Class, such as shrunken red horn brown leaf palm, hunan green and so on. Comprehensive analysis showed that the agronomic traits and fiber quality of the tested materials were poor and the genetic diversity was rich.