Results 171 to 180 of about 5,131 (204)

Photoinduced Microsporogenesis in Rice

Botanical Gazette, 1974
Fourteen-day-old plants of a photosensitive winter variety of rice, cv. BAM-3, were subjected to photoinductive cycles of 8-hr light and 16-hr darkness for 1, 2, 3, 4, 5 weeks, or until anthesis. Short-day treatment for 1 and 2 weeks caused vacuolation in the cytoplasm of a few of the sporocytes.
G. Misra, P. A. Khan
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Molecular control of microsporogenesis in Arabidopsis

Current Opinion in Plant Biology, 2011
Microsporogenesis is essential for male fertility and requires both the formation of somatic and reproductive cells in the anther and meiotic segregation of homologous chromosomes. Molecular genetic studies have uncovered signaling molecules and transcription factors that play crucial roles in determining the anther cell types and in controlling gene ...
Fang, Chang, Yingxiang, Wang, Shuangshuang, Wang, Hong, Ma   +3 more
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Cytomixis in the cereal (Gramineae) microsporogenesis

Protoplasma, 2015
The specific features in behavior of the nuclei and chromatin migrating through cytomictic channels as well as in formation of micronuclei in the cereal microsporogenesis have been studied. Immunofluorescence microscopy has allowed for demonstration that the tubulin cytoskeleton does not play a significant role in the intercellular migration of nuclei.
Yuri V, Sidorchuk, Anna A, Novikovskaya, Elena V, Deineko   +2 more
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MICROSPOROGENESIS IN JATROPHA CURCAS L.

Acta Horticulturae, 2012
Jatropha curcas L. is an important oil crop for biofuel production. As such, the yield is commercially important and breeding programmes are focused to select and propagate high yielding individuals. Haploid plants are very useful in these programmes to produce true homozygotes in a short period of time.
L.M. Currais, J.M. Canhoto, P. van der Linde   +2 more
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Phenological measurements of microsporogenesis in trees

Tree Physiology, 1995
The value of two heat sum methods, one linear (degree days > 5 degrees C) and the other curvilinear (period units), were assessed together with calendar days as predictors of the duration of microsporogenesis in seven natural stands of Norway spruce (Picea abies (L.) Karst.) and eleven natural stands of Scots pine (Pinus sylvestris L ...
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Chromosomal Behavior During Microsporogenesis

1994
The developmental stages of maize microsporogenesis have been examined to determine the time interval of floret maturation and stage duration (Hsu and Peterson 1981; Hsu et al. 1988), to identify meiotic mutants and genetic male sterility (Albertsen and Phillips 1981; Curtis 1985; Golubovskay and Khristolyubova 1985; Staiger and Cande 1991), to study ...
Ming T. Chang, M. Gerald Neuffer
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Gene Expression During Microsporogenesis

1992
Naturally-occurring haploids have been known in the plant kingdom for many years; for example Blackslee et al recorded a haploid mutant of Datura as long ago as 1922. While it was appreciated that doubled haploids would provide the most effective route for the production of homozygous lines for plant breeding, this approach could not be applied since ...
M. A. Zaki, H. G. Dickinson
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Microsporogenesis in the Cucurbitaceae

Botanical Gazette, 1930
1. Darkly staining granules are present among the bivalent chromosomes in late diakinesis in all members of Cucurbita, but are absent in Citrullus, Luffa, and Cucumis. 2. Cucurbita pepo and C. maxima each has twenty bivalent chromosomes. 3. Citrullus vulgaris has eleven bivalent chromosomes; Luffa cylindrica, eleven; Cucumis melo, twelve.
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Evolution of Microsporogenesis in Angiosperms

International Journal of Plant Sciences, 2002
Microsporogenesis is highly labile in early‐branching angiosperms, i.e., those with mostly sulcate pollen, compared with the tricolpate and tricolpate‐derived eudicots. New records of microsporogenesis in basal angiosperms (19 taxa were examined), together with a review of the literature, demonstrate that the existing typology has been too strictly ...
Carol A. Furness, Paula J. Rudall, F. Bruce Sampson   +2 more
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MICROSPOROGENESIS IN CITRUS LIMON (RUTACEAE)

American Journal of Botany, 1971
Prior to meiosis tapetal cells become binucleate, and callose deposition separates spore mother cells from each other. No cytomictic channels are present during meiosis. Cytokinesis is simultaneous, by furrowing. The primexine and a rudimentary exine are laid down while the microspores are still in tetrads.
Harry T. Horner, Nels R. Lersten
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