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The problems of apogamety.

机译:脱配问题。

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摘要

The concept of apogamety and the history of its acceptance are discussed. Apogamety is a special kind of apogamy in which an embryo develops from either synergid (synergid apogamety) or antipode (antipodal apogamety). According to the published information, apogamety is found in 242 species from 79 families of flowering plants, of which 157 species and 58 families belong to the dicotyledons and 85 species and 21 families belong to monocotyledons. Synergid apogamety is encountered in 223 species from 75 families of flowering plants, including 140 species from 56 families of dicotyledons and 83 species from 19 families of monocotyledons. Antipodal apogamety, which is much less frequent, is described in 28 species from 14 families, of which in 14 species from 9 families embryos develop from haploid antipodes, and in 14 species from 5 families they originate from diploid antipodes. Apogamety may also be divided into eugamic apogamety (the development of an embryo from a synergid or antipode after fertilization) and apogamic apogamety (the development of an embryo from these cells without fertilization). The author's data on apogamety in 8 species (Rudbeckia laciniata, Taraxacum alatum, Argyropsis candida, Sternbergia fisheriana, Carya illinoinensis,Cephalaria gigantea, Fragaria ananassa and Hordeum vulgare) are presented.
机译:讨论了无配子的概念及其接受的历史。配子配子体是一种特殊的配子配子体,其中从协同体(合子配子配子体)或对映体(对映体的配子体)发育出胚胎。根据公开的信息,在79个开花植物科中发现242种配子配子体,其中157种和58科属于双子叶植物,85种和21科属于单子叶植物。在75种开花植物的223种物种中遇到了增效顶配,其中56种双子叶植物的140种和19种单子叶植物的83种。对偶顶配子的发生频率要低得多,在14个科的28种中有描述,其中9个科的14种有单倍体对映体发育的胚胎,在5个科的14种中它们起源于二倍体对映体。脱配子生殖也可以分为真性顶配子生殖(受精后来自协同体或对映体的胚的发育)和无融合生殖器的配子生殖(未经受精的这些细胞的胚的发育)。提出了作者关于八种物种(黄金菊(Rudbeckia laciniata),蒲公英(Traxacum alatum),念珠菌,白色念珠菌(Sternbergia fisheriana),山核桃(Carya illinoinensis),大头孢子虫(Cephalaria gigantea),草莓属(Fragaria ananassa)和大麦(Hordeum vulgare))的配子game性的数据。

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