Results 51 to 60 of about 1,432 (112)
Anther Ontogeny and Microsporogenesis in <i>Helianthus annuus</i> L. (Compositae)
Notulae Scientia Biologicae, 2015 In this study, anther ontogeny and microsporogenesis were analysed in Helianthus annuus L. The undifferentiated anther is ovoid-shaped and the differentiation starts with the appearance of archesporial cells. Mature anthers are tetrasporangiate.
Aslihan ÇETİNBAŞ, Meral ÜNAL
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Actin filaments drive spindle positioning in Arabidopsis meiosis II
New Phytologist, Volume 248, Issue 5, Page 2187-2191, December 2025.
Yingrui Ma, Hua Jiang
wiley +1 more source
Why are the inner and outer sides of many flower petals differently coloured?
Plant Biology, Volume 26, Issue 5, Page 665-674, August 2024.Evolutionary hypotheses aimed at explaining why inner and outer sides of petals are often differently coloured. Abstract The flower perianth has various, non‐mutually exclusive functions, such as visual signalling to pollinators and protecting the reproductive organs from the elements and from florivores, but how different perianth structures and their
X.‐Q. Fan +6 more
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Anales del Jardín Botánico de Madrid, 2013 We analyzed the microgametogenesis and microsporogenesis of the male flowers of the holoparasitic Helosis cayennensis (Sw.) Spreng. var. cayennensis using optical and scanning electron microscopy.
Ana María González +2 more
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The male germ unit association is independently regulated of GUM in Arabidopsis thaliana
Plant Direct, Volume 8, Issue 7, July 2024.Abstract Cytoplasmic projections (CPs) formed by the generative and sperm cells link the male gametes with the vegetative cell (VC) nucleus, which are required to build the male germ unit (MGU) assemblage in the angiosperm pollen grain. As molecular and genetic controls underlying CP development and formation of the MGU are unknown, it was hypothesized
Abdur Rauf +9 more
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Comparison of flower bud development in almond, apricot and peach genotypes
International Journal of Horticultural Science, 2006 The phenological processes of flower bud development of stone fruits during dormancy are not thoroughly known. The yield of these species, especially of almond, apricot and peach is determined basically by dormancy of flower buds, the survival rate of ...
L. Szalay
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Quality assessment of pollen of pear genotypes for their use in breeding
Новые технологии, 2019 The morphological quality indices of pollen of 14 pear genotypes have been studied in the conditions of the humid subtropics of the south of Russia. Viability and fertility have been determined, and variational curves of pollen grain sizes have been ...
N. S. Kiseleva
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Maize Prolonged Prophase 1 is essential for meiotic progression in pollen mother cells
Crop JournalMeiosis, a critical process for sexual reproduction, requires precise regulation to ensure the correct progression of meiotic stages. In yeast and animals, errors in meiotic recombination and homologous chromosomes synapsis bring a surveillance mechanism
Lingling Pan +6 more
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Meiose e viabilidade polínica na família Araceae Meiosis and pollen viability in Araceae family
Acta Botânica Brasílica, 2005 O objetivo deste trabalho foi analisar a microsporogênese e a viabilidade dos grãos de pólen em 17 espécies de aráceas coletadas no Rio Grande do Sul, Brasil.
Maria Goreti Senna Corrêa +5 more
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Embriología de las estructuras reproductoras masculinas del género Pinguicula L. (Lentibulariaceae)
Botanical Sciences, 2005 Con el propósito de contribuir al conocimiento embriológico del género Pinguicula (Lentibulariaceae) se estudiaron los procesos ontogenéticos de las estructuras reproductoras masculinas de una especie representativa de cada uno de los tres subgéneros ...
Silvia Espinosa-Matías +2 more
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