苧麻雄性不育性状有的在无性繁殖世代中天然存在,有的在有性繁殖后代中也会产生。这些雄性不育系在自然传粉的情况下,都能恢复结籽,其子代具有不同程度的超亲优势。 一、园青5号雄性不育性状的遗传 园青5号是从杂种一代中选出来的雄性不育系,它的亲本是我省地方农家品种独山园麻MS和长顺青杆麻。 1974年我们将园青5号与其兄妹系园青6号进行杂交,杂种第一代产生育性分离,如表1。 Some ramie male sterile traits exist naturally in the clonal generation, and some will occur in sexual reproduction offspring. These male-sterile lines restore seed in natural pollination, with offspring having varying degrees of super-pro-millennium. First, Yuanqing 5 male sterile characters of genetic Park Green 5 is selected from the hybrid generation of male sterile lines, its parents are local farmers in our province Dushanyuanma MS and Changshun green pole Ma. In 1974 we will Yuanqing 5 and its brother and sister Yuanqing 6 hybrids, the first generation of hybrid fertility, as shown in Table 1.