Results 41 to 50 of about 3,040 (198)

Anther Ontogeny and Microsporogenesis in <i>Helianthus annuus</i> L. (Compositae)

open access: yesNotulae 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
doaj   +3 more sources

Investigation on pollination approaches, reproductive biology and essential oil variation during floral development in German chamomile (Matricaria chamomilla L.)

open access: yesScientific Reports, 2022
German chamomile is an important medicinal and aromatic herb known for its blue essential oil. It lacks studies on anthesis, breeding systems and floral development with their impact on the essential oil.
Niketa Yadav   +8 more
doaj   +1 more source

The True Identity of the “Second Pollen Morphology” of Camellia oleifera—Stomium Cells

open access: yesHorticulturae, 2022
Previous studies on Camellia oleifera pollen morphology have indicated dual morphologies, defined as “dimorphism”. However, they were limited to morphological studies at the end of final development and did not elucidate the origin, structure, and ...
Yang Hu, Chao Gao
doaj   +1 more source

Rapid Swelling of Pollen Grains in Response to Floret Opening Unfolds Anther Locules in Rice (Oryza sativa L.)

open access: yesPlant Production Science, 1999
The changes in pollen grain diameter were examined in relation to the floret opening and anther dehiscence in rice (Oryza sativa L.). In the first experiment, the florets were artificially opened by excising the top of the glumes at various times before ...
Tsutomu Matsui   +2 more
doaj   +1 more source

Abnormal anther development leads to lower spikelet fertility in rice (Oryza sativa L.) under high temperature during the panicle initiation stage

open access: yesBMC Plant Biology, 2021
Background Decreased spikelet fertility is often responsible for reduction in grain yield in rice (Oryza sativa L.). In this study, two varieties with different levels of heat tolerance, Liangyoupeijiu (LYPJ, heat susceptible) and Shanyou63 (SY63, heat ...
Qiuqian Hu   +5 more
doaj   +1 more source

An Arabidopsis flavonoid transporter is required for anther dehiscence and pollen development [PDF]

open access: yesJournal of Experimental Botany, 2009
FLOWER FLAVONOID TRANSPORTER (FFT) encodes a multidrug and toxin efflux family transporter in Arabidopsis thaliana. FFT (AtDTX35) is highly transcribed in floral tissues, the transcript being localized to epidermal guard cells, including those of the anthers, stigma, siliques and nectaries.
Thompson, Elinor   +4 more
openaire   +4 more sources

The Mechanics of the Grass Flower: Anther Dehiscence and Pollen Shedding in Maize [PDF]

open access: yesAnnals of Botany, 1996
Abstract In this paper on the flower mechanics of the grasses, the opening mechanism of the maize anther is studied. Both the septum between each two locules and the stomium of these porate-dehiscing anthers appear to be opened due to lysis of the middle lamellae of their cells.
Keijzer, C.J.   +2 more
openaire   +2 more sources

Pollen viability and stigma receptivity in Swainsona formosa (G.Don) J.Thompson (Fabaceae), an ornamental legume native to Australia

open access: yesOrnamental Horticulture, 2019
Pollen viability and stigma receptivity are prerequisites for successful cross-pollination and seed set in Swainsona formosa. In this study, the pollen viabilities and stigma receptivities was assayed by in vitro pollen germination and simple hand ...
Zulkarnain Zulkarnain   +2 more
doaj   +1 more source

A Novel Cell Ablation Strategy Blocks Tobacco Anther Dehiscence [PDF]

open access: yesThe Plant Cell, 1997
We utilized a new cell ablation strategy to ablate specific anther cell types involved in the dehiscence process. The tobacco TA56 gene promoter is active within the circular cell cluster, stomium, and connective regions of the anther at different developmental stages.
T P, Beals, R B, Goldberg
openaire   +2 more sources

The role of atmospheric precipitation in anther dehiscence [PDF]

open access: yes, 2020
Anther dehiscence is an important process taking place at the end of the plant life cycle. This process consists of various follow-up steps which result in anther opening and pollen grains exposure.
Kampová, Anna
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