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Male gametophyte in maize: Influences of the gametophytic genotype
Theoretical and Applied Genetics, 1976Size and variation in pollen samples were investigated in several successively selfed generations. A significant decrease in mean diameter of pollen grains accompanied inbreeding; also decreased variation in pollen size from individual plants was observed.
C M, Johnson, D L, Mulcahy, W C, Galinat
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Distinct chromatin signatures in the Arabidopsis male gametophyte
Nature Genetics, 2023Epigenetic reprogramming in the germline contributes to the erasure of epigenetic inheritance across generations in mammals but remains poorly characterized in plants. Here we profiled histone modifications throughout Arabidopsis male germline development.
Danling Zhu +8 more
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Sporophyte-gametophyte interactions between anther and male gametophyte in petunia
Russian Journal of Plant Physiology, 2009Sporophyte-gametophyte interactions between anther and male gametophyte were investigated in two (fertile and sterile) clones of petunia (Petunia hybrida L.) with different reproductive strategies. Structural and functional reorganization of sporophyte tissues in the developing anther of fertile clone is closely coordinated with each of the successive ...
A. A. Dobrovol’skaya +3 more
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2009
The maize male gametophyte is a biologically complex component in seed production, and is of great interest for both practical and scientific reasons. In the anther of the stamen, a well-characterized series of developmental events produces the haploid pollen grain, which is released for pollination of the silk and subsequent fertilization of the ...
Patricia A. Bedinger, John E. Fowler
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The maize male gametophyte is a biologically complex component in seed production, and is of great interest for both practical and scientific reasons. In the anther of the stamen, a well-characterized series of developmental events produces the haploid pollen grain, which is released for pollination of the silk and subsequent fertilization of the ...
Patricia A. Bedinger, John E. Fowler
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Male Gametophyte in Enkianthus
Botanical Gazette, 19601. Observations on the male gametophyte of Enkianthus cernuus, E. perulatus, and E. campanulatus are reported. 2. The anthers are characterized by a glandular tapetum and a prominent, fibrous endothecium. 3. The single pollen grains exhibit a dimorphism in size and an unstable number of germ pores: E. cernuus and E.
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Life after meiosis: patterning the angiosperm male gametophyte
Biochemical Society Transactions, 2010Pollen grains represent the highly reduced haploid male gametophyte generation in angiosperms. They play an essential role in plant fertility by generating and delivering twin sperm cells to the embryo sac to undergo double fertilization. The functional specialization of the male gametophyte and double fertilization are considered to be key innovations
Borg, M, Twell, D
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2009
The highly reduced haploid gametophyte generation in seed plants occupies a short but vital phase in the plant life cycle. The male gametophytes of flowering plants are highly specialized two- or three-celled pollen grains that nurture and deliver twin male gametes or sperm cells to the female gametes at fertilisation. This functional specialization is
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The highly reduced haploid gametophyte generation in seed plants occupies a short but vital phase in the plant life cycle. The male gametophytes of flowering plants are highly specialized two- or three-celled pollen grains that nurture and deliver twin male gametes or sperm cells to the female gametes at fertilisation. This functional specialization is
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gaMS-1 : a gametophytic male sterile mutant in maize
Sexual Plant Reproduction, 1996Several pollen-specific genes from different species have been isolated and characterized at the molecular level, but the precise role of most of them is unknown. Mutant analysis represents a direct approach to uncovering gene function, but the paucity of available mutants affecting pollen development and/or function and the poor characterization of ...
SARI GORLA M. +3 more
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STRUCTURE OF THE MALE GAMETOPHYTE IN GYMNOSPERMS
Biological Reviews, 1963SummaryAnalysis of the morphological nature of the gymnospermous male gametophyte has been based on evidence from fossil gymnosperms, on a comparative survey of living vascular plants, and on ontogeny within the various families of the gymnosperms. Although fossil coniferous and taxad pollen is unknown, the fossil pollen of other gymnosperms is rather ...
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Male gametophyte development in monosomics of maize
Genome, 1989The development of male gametophytes in diploid and monosomic-1, -2, -3, -4, -6, -7, -8, -9, and -10 maize plants was characterized. Developmental differences due to nullisomy in the gametophyte were evaluated by comparing the development of haploid and nullisomic microspores formed by monosomic plants, while differences due to gene dosage in the ...
Zuo-Yu Zhao, David F. Weber
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