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单词 Apomictic seed
释义

Apomictic seed

英语百科

Apomixis

Vegetative apomixis in Poa bulbosa; bulbils form instead of flowers
Caribbean Agave producing plantlets on the old flower stem.

In botany, apomixis was defined by Hans Winkler as replacement of the normal sexual reproduction by asexual reproduction, without fertilization. Its etymology is Greek for "away from" + "mixing". This definition notably does not mention meiosis. Thus "normal asexual reproduction" of plants, such as propagation from cuttings or leaves, has never been considered to be apomixis, but replacement of the seed by a plantlet or replacement of the flower by bulbils are types of apomixis. Apomictically produced offspring are genetically identical to the parent plant.

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更新时间:2025/6/17 12:21:53