对陆地棉与旱地棉的杂种F,代及其亲本性状进行了调查,结果表明,杂交一代的性状表现有双亲性状,如株型、花冠大小等.有中间性状,也有超亲性状。如花萼齿数。对陆地棉与旱地棉的杂种F1代的花粉母细胞染色体的观察研究表明.陆地棉与旱地棉的杂种F1代不育的根本原因在于减数分裂中期染色体不能正常配对.引起部分染色体滞后及染色体习:=均衡分配,从而产生出多分孢子与微核,形成败育花粉,最终导致杂种不育。 The results of crossbreeding F and generation and their parents traits of upland cotton and upland cotton showed that the cross generation traits such as plant type, corolla size, etc. There are intermediate traits and super-trait traits. Such as calyx teeth. The observation on the chromosomes of pollen mother cells from hybrid F1 of Upland cotton and Upland cotton showed that the fundamental reason for the hybrid F1 progenies of Upland cotton and Upland cotton is that the metaphase meiosis chromosomes can not be normally paired and some chromosomal lagging and chromosomes Xi: = balanced distribution, resulting in multi-spore and micronucleus, the formation of aborted pollen, eventually leading to hybrid sterility.