论文部分内容阅读
红薯是一种喜高温、不耐寒冷的短日照作物。一般生产上都用无性繁殖,但在一定条件下也能开花结实,传种接代。同时还有少数品种如“河北351”及“57—54”等能在自然条件下开花结实。红薯是异花授粉作物,遗传性较复杂,通过有性杂交选得的后代,可用无性繁殖将优良的性状保存下来,加以利用。这是红薯选育良种的有利条件。为了发动群众,依靠群众,大家都能动手来搞好红薯选种工作,现将红薯有性杂交技术介绍如下:
Sweet potato is a hi-temperature, cold-tolerant short-day crops. Asexual reproduction is generally used in production, but under certain conditions can flowering, seed transfer. At the same time there are a few varieties such as “Hebei 351” and “57-54” and other flowers in the natural conditions strong. Sweet potato is a cross-pollination crop, hereditary more complex, selected through sexual cross-offspring, asexual reproduction can be fine traits preserved, to be used. This is a sweet potato breeding conditions favorable. In order to mobilize the masses, relying on the masses, we can all begin to do a good job of sweet potato selection work, sweet potato sexual hybridization techniques are introduced as follows: