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黄瓜属于葫芦科南瓜属,单性花,雌雄同株,因花色鲜黄并能分泌蜜液,是虫媒花。育种者为了培育异质杂种,采用地理上远距离生态不同的品种与当地品种杂交。具体方法是:①人工杂交——把雌花花瓣末端用棉花塞住再用细线缚好;这样密闭隔离,既可预防昆虫传粉,又能使子房在自然条件下良好发育。授粉时间在上午7——11时进行,采集开放的雄花花粉混合放于雌花的柱头上,授粉后重新隔离。过3—4天将缚线和棉花除掉,结实率达70—90％。②自然杂交
Cucurbitaceae Cucurbita is a cucumber, unisexual flowers, monoecious, because of the color yellow and can excrete honey, is the insect flower. In order to cultivate heterozygous hybrids, breeders use the long-range ecologically different varieties of geography to breed with local breeds. Specific methods are: ① artificial hybrid - the female flower petals end plugged with cotton and then fine tied; so close isolation, both to prevent insect pollination, but also make the ovary well under natural conditions. Pollination time in the morning of 7-11, collected open male pollen mixture placed on the stigma of female flowers, re-isolation after pollination. After 3-4 days to tie line and cotton get rid of, seed set rate of 70-90%. ② natural hybridization