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稔性(种子结实性)过低是影响同源多倍体黄瓜生产应用的主要问题。稔性降低是一个综合性的复杂问题,它涉及到雄配子和雌配子的生活能力,受精过程是否正常,受精卵发育是否健全等一系列细胞形态、生理生化及遗传物质的变异问题。主攻结实率的问题不仅是黄瓜而且是整个多倍体研究领域的关键课题。本文所报导的仅为该作物细胞形态研究的一个侧面。 一、体细胞染色体数量的变异 诱发四倍体黄瓜体细胞染色体数并不全是四倍性,更多的是不同倍性细胞相嵌的嵌合体或非整倍体,也有可能出现倍性更高的
Too low (seed setting) is the main problem that affects the production and application of apomictic polyploid cucumber.稔 sexual reduction is a comprehensive and complex issue, which involves the male and female gametes living ability, fertilization process is normal, fertilized egg development is complete and a series of cell morphology, physiological and biochemical and genetic material variation. The main problem of seed setting rate is not only a cucumber but also a key issue in the field of polyploid research. All reported here are just one aspect of the crop cell morphology study. First, the number of somatic chromosome variation induced tetraploid cucumber somatic chromosome number is not all tetraploid, more is different ploidy phase embedded chimera or aneuploidy, may also be more ploidy of