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1.对陆地棉与中棉的杂种第一代和克服杂种第一代的不孕性进行研究,初步找出了不孕的原因和克服办法,为创造种间杂种,丰富育种材料,提供了可能。2.种间杂种遗传基础复杂,与具有优良性状多的陆地棉品种回交,获得许多超越亲本性状的新类型,可以选育出丰产、优质、抗病性强等的新品系。3.杂种第一代花粉母细胞染色体数,在同一花蕾上就有所不同,说明受精卵细胞在分裂的过程中已不正常,每一细胞的染色体数也不尽相同。
1. The first generation of cotton and cotton hybrids and to overcome the first generation of hybrid infertility research to initially identify the causes and ways to overcome infertility, in order to create interspecific hybrids, rich breeding materials provided may. Interspecific hybrids have a complex genetic basis, and are backcrossed with upland cotton varieties with excellent traits. Many new types of traits that exceed their parental traits can be obtained, and new strains with high yield, high quality and disease resistance can be selected. The chromosome number of first-generation pollen mother cells in hybrids is different in the same flower bud, indicating that the fertilized egg cells are not normal during the process of division, and the chromosome number of each cell is also different.