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- Title
棉花杂交后代表型性状遗传分析.
- Authors
任丹; 黄雅婕; 崔进鑫; 庞博; 高文伟
- Abstract
【Objective】 The aim of this study is to study the direct and inverse crosses between upland cotton and Sea Island Cotton with the same parents, and with a view to provide providing reference for early breeding of stable agronomic traits in the field by studying the genetic variation of agronomic traits in the progenies and selecting excellent individuals. 【Method】 The F2 segregation population of Upland Cotton TM-1 and Sea Island Cotton Xinhai 16 were used as materials. Then the variation coefficient, correlation analysis and principal component analysis of plant height, first node height, first node number, fruit branch number, effective branch number, boll number, effective boll number, single boll weight and lint percentage were compared. 【Result】 the coefficient of variation (CV) of reciprocal cross and reciprocal cross was analyzed. It was found that the coefficient of variation (CV) of boll number (0.51%) and effective boll number (0.47%) was the highest in the sea land population. The coefficients of variation of boll number (0.50%) and effective boll number (0.50%) were the highest in land and sea populations. In the analysis of population correlation, there were significant or extremely significant correlations between agronomic traits in the orthogonal population and the backcross population. In the first principal component analysis with higher eigenvalue, the highest number of fruit branches (0.878) and effective branches (0.895) were found in the sea land population, and the highest number of fruit branches (0.82) and effective branches (0.819) were observed in the land sea population. 【Conclusion】 There was no significant difference in agronomic traits between the direct and inverse crosses. The variation range of boll number and effective boll number in progeny population is wide, and the correlation between each character is significant. In principal component analysis, the contribution rate of fruit branch number and effective branch number is higher, so the fruit branch number, boll number, effective boll number and effective branch number are selected as the main characters of early breeding individual plant screening, and 40 excellent individual plants are selected, which can provide early selection for cross breeding.
- Publication
Xinjiang Agricultural Sciences, 2022, Vol 59, Issue 10, p2358
- ISSN
1001-4330
- Publication type
Article
- DOI
10.6048/j.issn.1001-4330.2022.10.003