Turning an essential respiratory gene into a cytoplasmic male-sterility factor
The selection of heterotic F1 hybrid varieties is a key agro-nomic strategy for improving crop yields,quality,and disease resistance(Bohra et al.,2016).Large-scale,low-cost hybrid seed production involves generating large populations of female plants,otherwise known as male sterile.Different techniques implying environmentally conditioned nuclear male sterility or mitochondria-driven cytoplasmic male sterility(CMS)have been used to this end,each with their own advan-tages and disadvantages(Kim and Zhang,2018).Because of its low cost and high purity,CMS hybrid breeding is by far the most widely used hybrid technology and has been implemented in many field and horticultural crops(Bohra et al.,2016).It usually relies on a three-component assembly involving a male-sterile CMS line,a fertility restorer line,and a maintainer one.Crosses between CMS and maintainer lines allow large-scale multiplication of female plants,whereas crosses with the restorer line produce heterotic male-restored hybrids that can thus set fruits(Figure 1).
gene、cytoplasmic、essential、factor、into、male-sterility、respiratory、turning
15
R73;S;S826
2022-08-23（万方平台首次上网日期，不代表论文的发表时间）
共3页
931-933
