对10个棉花杂交组合竞争优势研究

为了利用杂种优势选择杂交棉新品种,通过3重复随机区组试验设计,对10个杂交组合从农艺性状、产量、品质等方面与对照（赣棉杂1号）进行杂种优势分析.结果表明：大部分材料在株高、始果枝着生节位、果枝数、单株成铃、衣分、霜前花率、产量等性状方面表现负向竞争优势,而在始果枝着生高度、单铃重、比强度、纤维长度、整齐度等方面表现正向竞争优势;根据育种目标综合评定,组合1和3为优良组合.

Study on Competitive Advantage of 10 Cotton hybridied Combinations

The experiment studied the competitive advantage of 10 hybridied combination and Ganmianza No. 1 from agronomic traits, yield and quality, randomized block design and 3 replications were used, in order to select the new hybrid cotton variety using the heterosis. The results showed that： most of materials had negative competitive advantage in plant height, height of the first fruit branch, branch number, boll number per plant, lint percentage, flower before frost rate, yield traits and so on. But, the growing height of first fruit branch, single boll weight, specific strength, fiber length, uniformity and other aspects were positive competitive advantage; 1 and 3 were selected excellent combinationds according to the breeding objective.