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本研究利用多种陆地棉种质材料,对皮棉产量及其组成性状选择效果的分析证明,铃数增加不仅因遗传力低、选择准确性差而难以获得明显进展,而且进一步改良潜力很小,极难超过对照品种。相对而言,全株平均铃重与草粒种子纤维数是两项遗传力较高,选择潜力较大,易于改进的性状。无论从性状关联性、还是从选择效果分析,目前,陆地棉高产育种都应采取稳定铃数,保持现有推广品种水平,重点提高全株平均铃重、特别是结铃与吐絮集中性和衣指的产量选择策略。
In this study, we analyzed the selection effect of lint yield and its traits by using a variety of upland cotton germplasm materials. It was proved that boll number increase was difficult to obtain significant progress due to low heritability and poor selection accuracy, and the potential for further improvement was very small. Difficult to exceed the control species. Relatively speaking, the average boll weight of whole plant and the number of seeds of grass seeds are two traits with high heritability, large selection potential and easy improvement. Regardless of the relevance of traits or from the analysis of the selection effect, at present, high-yielding cultivars of Gossypium hirsutum should adopt stable bolls, keep the level of the existing promoted varieties, and focus on increasing the average boll weight of the whole plant, in particular, Refers to the production selection strategy.