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embryo abortion
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embryo abortion
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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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cities along the Grand Canal
Cities along the Yellow River in Ningxia Huizu Zizhiqu
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cities are separately listed in the state social and economic development plan
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