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Titlebook: Biotechnology and Ecology of Pollen; Proceedings of the I David L. Mulcahy,Gabriella Bergamini Mulcahy,Ercol Conference proceedings 1986 Sp

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發(fā)表于 2025-3-21 17:21:32 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
期刊全稱Biotechnology and Ecology of Pollen
期刊簡稱Proceedings of the I
影響因子2023David L. Mulcahy,Gabriella Bergamini Mulcahy,Ercol
視頻videohttp://file.papertrans.cn/189/188710/188710.mp4
圖書封面Titlebook: Biotechnology and Ecology of Pollen; Proceedings of the I David L. Mulcahy,Gabriella Bergamini Mulcahy,Ercol Conference proceedings 1986 Sp
影響因子In Recognition of the Forgotten Generation D. L. MULCAHyl Pollen was long believed to serve primarily a single function, that of delivering male gametes to the egge A secondary and generally overlooked value of pollen is that it serves to block the transmission of many defective alleles and gene combinations into the next generation. This latter function comes about simply because pollen tubes carrying defective haploid genotypes frequently fail to complete growth through the entire length of the style. However, the beneficial consequences of this pollen selection are diluted by the fact that the same deleterious genotypes are often transmitted through the egg at strictly mendelian frequencies (Khush, 1973). Gene expression in the pollen might thus at least appear to be a phenomenon of trivial consequence. Indeed, Heslop-Harrison (1979) rightly termed the gametophytic portion of the angiosperm life cycle, the "forgotten generation." This neglect, however, came about despite subtle but constant indications that pollen is the site of intense gene activity and selection. For example, Mok and Peloquin (1975) demonstrated that relatively heterozygous diploid pollen shows heterotic chara
Pindex Conference proceedings 1986
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Identification of Duplicate Loci and Evidence for Post-meiotic Gene Expression in Pollent al., 1979, 1981; Adams and Joly, 1980; Tanksley et al., 1981). It appears that, for many vascular plants, approximately 60% of the genes expressed in the sporophyte are also expressed during the gametophytic stage.
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Conference proceedings 1986es to the egge A secondary and generally overlooked value of pollen is that it serves to block the transmission of many defective alleles and gene combinations into the next generation. This latter function comes about simply because pollen tubes carrying defective haploid genotypes frequently fail
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male gametes to the egge A secondary and generally overlooked value of pollen is that it serves to block the transmission of many defective alleles and gene combinations into the next generation. This latter function comes about simply because pollen tubes carrying defective haploid genotypes freque
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https://doi.org/10.1007/978-3-662-55158-5l (3). Pollen is also able to respond to environment; this ability is expressed both in physiological interaction with stylar tissues during tube development, and in relation to environmental stresses, toxic products, pathogens (8). The responses are generally correlated to sporophytic behaviour (7,9).
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Extent of Gene Expression at the Gametophytic Phase in Maizel (3). Pollen is also able to respond to environment; this ability is expressed both in physiological interaction with stylar tissues during tube development, and in relation to environmental stresses, toxic products, pathogens (8). The responses are generally correlated to sporophytic behaviour (7,9).
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