棉花蜜蜂传粉杂交制种效果研究

利用抗虫不育系(Btms5ms5ms6ms6)和转Bt基因抗虫棉品系(Rg3)作为杂交制种亲本,制种期间在田间放养蜜蜂作为传粉媒介,连续三年在长江流域和黄河流域进行小规模田间开放式蜜蜂传粉杂交制种试验,对蜜蜂传粉杂交制种体系中的父母本种植比例、不同的蜂种、父母本种植方式、天气等对蜜蜂传粉制种效果进行了研究。初步研究结果表明:父母本种植比例以1:4制种效果较为理想,蜜蜂是较理想的传粉媒介,父母本混合种植方式和相间种植方式传粉效果差异不明显,天气变化对蜜蜂传粉影响较大,直接影响制种产量。

Study on Effect of Producing Cotton Hybrids by Bees Pollination

Using ms5ms6 male-sterile lines with Bt gene and transgenic Bt cotton Rg3 as parents, honey bees as pollination media, releasing honey bees in field during producing hybrids, three years experiments were performed in Yangtze River and Yellow River Valley Region. In the system of honey bees pollination producing cotton hybrids, the parents plant proportion, bee varieties, parent plant patterns, honey bees behavior and weather influence were studied. These preliminary results were as follows: 1: 4 proportion of parents was ideal, honey bees were better than bear bees in pollination effect, there was no remarkable difference between mixing plant patterns and alternating plant patterns, weather had obviously effect on honey bees pollination, which lead to direct hybrid yield loss.