英[\'aʊtkrɒsɪŋ]
美[\'aʊtˌkrɒsɪŋ]
Gametophytic self - incompatibility ( GSI ) is a widespread mechanism in flowering plants , which prevents self - fertilization and promotes outcrossing.
自交不亲和是被子植物预防近亲繁殖和保持 遗传 变异的一种重要机制.
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