Viewing the difference between the diploid and the polyploid in the light of the upland cotton aneuploid.
The aneuploidy of Gossypium hirsutum L. (upland cotton) aneusomatics were obtained by induced parthenogenesis. These aneuploids could grow and set seeds normally. In the process of meiosis there appeared large quantities of heteromorphic pairs and multivalent chromosomes and many cases of cytomixis and multisperm fertilization occurred. The aneuploids produced offsprings through sexual propagation. We explored penetratingly the questions how and why these aneuploids could survive. Through this research, we found that the upland cotton possessed an immense latent capacity to adapt to adverse environments. More importantly, in the case of the upland cotton, we discovered that the genetic pattern of the polyploid differs in some respects from that of the diploid.
Zhou
Shi-Qi
SQ
Shenyang Agricultural University, Shenyang, P.R. China. zhoushiqi6@163.com
D000782:Aneuploidy; D032461:Chromosomes, Plant / Q000235:genetics*; D004171:Diploidy; D035264:Flowers / Q000737:chemistry; D003368:Gossypium / Q000235:genetics*; D008540:Meiosis / Q000235:genetics; D018519:Meristem / Q000737:chemistry; D010312:Parthenogenesis / Q000235:genetics*; D011058:Pollen / Q000235:genetics; D011123:Polyploidy