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采用不完全双列杂交设计 ,以高产抗病推广品种作亲本选配杂交组合 ,进行随机区组试验 ,结果表明皮棉产量加×加上位性方差达 5%显著水平 ,显性方差达 10 %显著水平。皮棉产量加×加上位性效应值以苏棉 4号和中棉所 19为高 ,它们具有较高的一般配合力 ,皮棉产量显性效应值最高的是泗 331,因此它也具有较好的特殊配合力。F2 基因型及杂种优势估计值与预测值之间的相关系数说明根据亲本及 F1数据用 ADAA模型预测F2 代基因型值及杂种优势是可行的。除单株铃数外 ,其余产量性状及纤维品质性状都有组合表现了群体超亲优势。组合 ( 2× 5)皮棉产量 HPB( F2 )为 2 2 .36% ,达显著水平。超亲优势利用代数最多的是组合( 3× 5)的籽棉产量性状 ,可用 4 .52 51代。群体超亲优势两年平均超过 5%的组合是 ( 1× 5)和 ( 2× 5)
Incomplete diallel cross design, high-yielding and disease-resistant varieties were used as parental optional hybrid combinations and randomized block experiments were carried out. The results showed that the lint yield plus the plus significant variance reached 5% significant level, and the dominant variance was 10% Level. Lint yield plus X and X and X are both higher in Sumian 4 and Zhongmiansuo 19, they have a higher general combining ability, and the highest lignin yield is Si 331, so it also has a better Special teamwork. Correlation coefficients between F2 genotypes and heterosis estimates and predicted values indicate that it is feasible to predict F2 genotypes and heterosis using ADAA model based on parents and F1 data. In addition to the number of bolls per plant, the other yield traits and fiber quality traits showed a combination of super-parents superiority. The combination (2 × 5) lint yield HPB (F2) was 22.36%, reaching a significant level. Super pro-dominant use of algebra is the combination of the most (3 × 5) of the seed cotton yield traits, available 4. 521 generation. The combination of super-kinship with an average of over 5% over two years was (1 × 5) and (2 × 5)