例句與用法

1. Dong a , the male sterile line of cotton discovered in 1972 from a pollenless mutant of cotton variety dongting no . l , is an ideal materials used to study the pollen - specific genes during anther development . the fertile individuals and its pollenless mutant have a highly homogeneous genetic background except for the male sterility
   棉花洞a雄性核不育系是1972年從洞庭一號(hào)棉花原種圃中發(fā)現(xiàn)的突變體，不育度高且穩(wěn)定，可育與不育花粉在單核期以前發(fā)育同步，是研究棉花花藥與花粉發(fā)育相關(guān)基因的理想材料。