by selfting or backcrossing
通过自交或回交
The sprouting percentage of hybrid progenies was reduced by backcrossing with the resistant parents.
用抗性亲本回交可提高其后代得抗穗发芽性。
Identification of drought tolerance germplasms in maize backcrossing introgression populations
玉米回交导入后代群体中耐旱种质的鉴定研究
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