“aquatic heterosis”的概念、定义、翻译、参考文献-科学参考

单词	aquatic heterosis
释义	aquatic heterosis Encyclopedia 农学水产杂种优势释 aquatic heterosis水产杂种优势遗传基础不同的两个水生生物亲本杂交产生的杂种在生长势、生活力、生殖力、抗逆性、产量和品质等性状上优于其亲本的现象。杂种优势是生物界普遍存在的现象，对改良生物的生产性能有重要作用。一般具有杂种优势的杂种表现明显的近交衰退现象，且随繁殖世代增进而减退，因而一般只用杂种一代。
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