厚皮甜瓜单性花系的选育及其遗传分析

Studies on selective breeding of monoecious muskmelon and analysis of heredity regular

对从国外引进的厚皮甜瓜品种Athena中分离得到的单性花材料进行了植物学特征和遗传特性研究。结果表明,在普通甜瓜栽培条件下,单性花系植株营养生长和生殖生长的表现均与普通雄全同株甜瓜品种或自交系无明显区别,雌花的颜色、形态、育性及着生节位等的表现均与普通雄全同株甜瓜品种一致,结实正常,仅在花的性别分化表现上存在明显差异;试验所得到的厚皮甜瓜单性花材料的单性花性状是由1对显性基因控制的质量性状。

The botanical characteristics and genetic regulation of a monoecious material separated from an introduced cultivar were studied. Results showed that there was no remarkable difference between Monoecious and Andromonoecious melon varieties or inbred lines on expression of vegetative growth and reproductive growth under common cultivation management. The colour and configuration （form shape） and fertility and node location of female flower expression were identical,except for the sex phenotype. The monoecious character of that melon material was controlled by a pair of genes at one single locus,and the Monoecious character was controlled by the dominant gene. The inheritance conformed to Mendel＇s law.