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embryo abortion
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embryo abortion
Encyclopedia
农学
〔杂交育种性状〕
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embryo abortion
胚败育
狭义的胚败育指果树作物完成授粉受精后,由遗传决定的合子幼胚发育过程中出现停滞或死亡,未能形成成熟胚的生殖异常现象。广义的胚败育指果树作物的胚发育异常,未能形成可育种子胚的生殖现象。
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elementary
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Elementary and Secondary Education Act (U.S.A.)
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