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无籽西瓜具有含糖分多,品质好,经济价值高等优点,并且耐贮藏,好运输。因此,对改善人民生活有着不可忽视的意义。 一、无籽西瓜的产生 无籽西瓜是用二倍体西瓜(有籽西瓜)与四倍体西瓜(少籽西瓜)杂交所产生的一代杂种。因无籽两瓜体细胞染色体数为33条,是西瓜染色体基数的三倍,故无籽西瓜也称为三倍体西瓜。三倍体种子播种后生长的杂种植株虽可以正常开花,但雄花花粉无生殖能力,胚珠由于染
Seedless watermelon has more sugar content, good quality, high economic value, and resistant to storage, good transportation. Therefore, it is of great importance to improve people’s lives. First, the emergence of seedless watermelon Seedless watermelon is a diploid watermelon (seed watermelon) and tetraploid watermelon (seedless watermelon) hybrid generation generated hybrids. Because seedless two melons somatic chromosome number is 33, is three times the chromosome number of watermelon, so seedless watermelon also known as triploid watermelon. Although the hybrid plants that grow after the triploid seed can grow normally bloom, male pollen has no ability to reproduce,