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本研究利用23个表型性状对71份西瓜自交系材料进行了遗传亲缘关系分析。聚类分析结果将供试材料分为7大类群:第1类包含3份西瓜材料,全部为抗病大果型;第2类为10份黑皮类型种质;第3类主要由花皮类型材料组成;第4类包括的7份西瓜种质全部为中小果型高糖材料;瓜面楞沟较深的材料58号单独聚为第5类;第6类主要为美国久比利类型材料;第7类包括几乎所有的网纹类型西瓜材料。变异系数的结果表明果粉有无、果形、纤维粗细、枯萎病抗性等性状能较好地反映出西瓜种质间的差异。本研究为西瓜育种亲本的选配和杂交优势水平的预测提供理论参考。
In this study, genetic characteristics of 71 watermelon inbred lines were analyzed using 23 phenotypic traits. The results of cluster analysis divided the tested materials into seven groups: the first group consisted of three watermelon materials, all of which were big disease-resistant types; the second type consisted of 10 black-type germplasms; the third group consisted mainly of flower-skin Type of material composition; category 4 includes seven watermelon germplasm all medium and small fruit-type high-sugar material; melon foraminiferal material No. 58 alone grouped as Category 5; Category 6 mainly for the United States Jubilee type Material; Class 7 includes almost all of the reticulated-type watermelon materials. The results of the coefficient of variation show that there is no difference between fruit germplasm and watermelon germplasm, such as the presence or absence of fruit powder, the fruit shape, the fiber thickness and the resistance to Fusarium wilt. This study provides a theoretical reference for the selection of the parents of watermelon breeding and the prediction of the heterosis level.