无籽西瓜是由四倍体西瓜做母本,普通二倍体西瓜做父本杂交产生的三倍体西瓜。但四倍体西瓜不是自然界原有的,是用一种叫秋水仙矸的生物矸,处理普通西瓜,使细胞染色体加倍诱变而成的。那么二倍体、三倍体、四倍体是怎么回事呢?原来植物体是由无数的细胞组成的,而细胞又 Seedless watermelon is a tetraploid watermelon mother, common diploid watermelon parental triploid watermelon cross. However, tetraploid watermelon is not the original nature, is the use of a biological gangue called Qiuxian Dan, dealing with ordinary watermelon, the cell chromosome made of double mutagenesis. So diploid, triploid, tetraploid is how the matter? The original plant is composed of numerous cells, and cells