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Showing 1 to 20 of 28 for “"ovule"”.
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MOLECULAR NETWORK CONTROLLING THE OVULE DEVELOPMENT IN ARABIDOPSIS THALIANA
Ovules are the essential organ for plant reproduction. Megasporogenesis, megagametogenesis, fertilization and embryogenesis take place within the ovule. In the ovule both sporophytic and gametophytic generation coexist. The analyses of this developmental process provides an excellent tool to …
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The Anatomical Development of The Ovule and Seed in The Soybean
Made available in DSpace on 2014-12-04T20:17:17Z (GMT). No. of bitstreams: 1 6305128.pdf: 6122004 bytes, checksum: 4026cafede88b9c24408d03360ec9ada (MD5) Previous issue date: 1963
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The Development of the Embryo Sac in Ranunculus Glaberrimus Hook
… and morphological characters of the ovule in the family Ranunculaceae indicates that considerable variation exists within this family.
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The molecular basis for the initiation of fruit development and parthenocarpy
… background was examined when hormone perception, ovule and carpel identity functions were removed genetically. This established that FWF functions independent of GAI-mediated GA perception. Carpel identity conferred by FUL was critical for parthenocarpic silique elongation and ovule development …
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Pollinator-syndrome driven changes in the mating systems of two Cape legume species
… of nectar volume and sugar concentration, pollen ovule rations and selfcompatibility has been investigated. There was no difference in nectar volume between the two species investigated, however, nectar concentrations have been found to be significantly higher in L. parva, which is thought to have …
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GENETIC EFFICIENCY IN TWO LOBLOLLY PINE (PINUS TAEDA L) SEED ORCHARDS
… number of ramets present. The best fit of the ovule pool gene frequencies was to the model weighted by ramets. The best fit of the pollen pool gene frequencies was to a model which incorporated pollen contamination.</p><p>Of eight markers each expected to occur at a frequency of less than five …
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The Reproductive biology of Erica pudens
… rodent trapping, camera observations and pollen/ovule counts. This research also establishes whether E. pudens is another example of convergent evolution in Erica by establishing its phylogenetic position. E. pudens possesses floral characteristics that are consistent with the rodent-pollination …
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THE FEMALE GAMETOPHYTE: DEVELOPMENT AND FUNCTION
… of flowering plants develops within the ovule, a specialized structure within the ovary, which gives rise to the seed after fertilization. Sexual reproduction in plants entails a series of developmental steps that culminate in the formation of the seed. The developing ovule protects the …
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Evolutionary Relationships In Polygonaceae With Emphasis On Triplaris
… based on the presence of ochrea, a single, basal ovule, a perianth composed of 5 or 6 tepals, and the fruit, an achene. However, the family is morphologically diverse with growth forms varying from small herbs or cushion plants to shrubs, lianas, and trees over 20m tall. Members of Polygonaceae …
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Identification and analysis of genes involved in cotton fibre initiation.
… arising from the epidermal surface of the cotton ovule. One factor in determining the length of the mature cotton fibre is the timing of fibre initiation, which is therefore a crucial step in obtaining commercial cotton fibres. To achieve a greater understanding of the regulation of cotton fibre …
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SECURE PLANT FERTILITY IN A CHANGING CLIMATE
… be fundamental for auxin transport at the tip of ovule primordia. Here, thanks to the ARF transcription factors, auxin promotes the differentiation of the MMC. The function of SPL seems to be conserved in plants. Indeed, preliminary data show that the protein encoded by the AtSPL homologous in …
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The reproductive ecology of Minuartia patula Michx. Mattf. (Caryophyllaceae)
… caging studies, flower phenology and pollen to ovule ratio, M. patula can be considered a facultative autogamous species. Also, significant differences were found among populations of M. patula for fruit set, seed set, and seed germination. No correlation was found between population size and …
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The embryology of Prionium serratum (L.f.) Drege ex E.Mey. (Juncaceae:Cyperales) and its implications for the phylogeny of Cyperales
… stigmata and the style is absent. There are many ovules per locule and placentation is axile. The ovule is anatropous, bitegmic and crassinucellate. The embryo sac conforms to the Polygonum type of development. Endosperm formation is helobial and embryogeny is of the Onagrad type, Juncus …
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Tracking Floral Visitation Using DNA Barcodes
… stigma clogging, stylar clogging, and ovule (seed) discounting. The prevalence of IPT and the importance of pollinators in mediating its impacts, however, remain poorly understood. Although most traditional methods for examining visitor movement are insufficient for determining rates of …
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Development of Computational Tools and Resources for Cotton microRNA Analysis
… of 1-DPA (days post anthesis)-old leaf and ovule and sequenced them. A total of 128 pre-miRNAs, including 120 conserved and 8 novel pre-miRNAs were identified in cotton by miRDeepFinder. At least 40 miRNAs were either leaf or ovule-specific, whereas 62 miRNAs were shared in both leaf and …
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Comparative analysis of ovary development in selected members of the subtribe Abutilinae (Malvaceae)
… events. On the basis of acropetal initiation of ovules in Abutilon species and the precocious development of style primordia in Malacothamnus fasciculatus, a mechanism for the origin of the uniovulate carpel is proposed. Here, early style growth may limit zonal growth of the gynoecial base so …
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Investigating the role of RNA 5- methylcytosine on ribosomal and transfer RNAs in Arabidopsis thaliana
… to be genetically redundant and essential for ovule development. Three NOP2 orthologues, NOP2A, NOP2B and NOP2C were identified in the A. thaliana genome and are genetically redundant. I found nop2a nop2b mutants were lethal due to female gametophyte abortion at the two to eight-nucleate …
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