Results 161 to 170 of about 11,224 (189)

Effects of chilling on male gametophyte development in rice

Cell Biology International, 2006
Chilling during male gametophyte development in rice inhibits development of microspores, causing male sterility. Changes in cellular ultrastructure that have been exposed to mild chilling include microspores with poor pollen wall formation, abnormal vacuolation and hypertrophy of the tapetum and unusual starch accumulation in the plastids of the ...
E A, Mamun, S, Alfred, L C, Cantrill, R L, Overall, B G, Sutton   +4 more
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RELATIONSHIP BETWEEN MALE AND FEMALE GAMETOPHYTE DEVELOPMENT IN RYE

American Journal of Botany, 1984
The development of male gametophyte and female gametophyte within a floret of rye (Secale cereale L.) was examined. Generally, meiosis in microsporocytes and in megasporocytes occurs simultaneously in most florets, but the period from zygotene to tetrad meiosis in the megasporocyte progresses more slowly than that in the microsporocyte. When the female
Xi Xiang-Yuan, Darleen A. DeMason
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Gene expression during the male gametophytic phase

Giornale botanico italiano, 1992
Abstract In recent years a number of experimental findings have indicated that in higher plants the gametophytic phase is able to express its own genetic information, a large part of which it shares with the sporophytic generation. Quantitative estimates of haploid and haplodiploid gene expression have been obtained by mRNA and isozyme analysis in ...
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The evolutionary history of the seed plant male gametophyte

Trends in Ecology & Evolution, 1993
The role of the male gametophyte in the early history of seed plants remains an underappreciated but critical part of the evolution of a suite of characters that ultimately came to define seed plants. Recent paleobotanical discoveries and studies of extant primitive seed plant male gametophytes, when coupled with phylogenetic analyses of seed plants ...
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Male Gametophyte

2022
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Gametophyte genome activation occurs at pollen mitosis I in maize

Science, 2022
Bradlee Nelms, Virginia Walbot
exaly  

Microsporogenesis and Formation of the Male Gametophyte

2000
The life cycle of flowering plants is characterized by an alternation between a dominant sporophytic generation and a highly reduced gametophytic generation. The seedling plant born of germination of the seed and the adult plant evolved from the seedling, constituting parts of the sporophytic generation, were topics of discussion in the previous ...
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Gametophytic Incompatibility inPetunia Hybrida: Molecular Aspects of Male Gametophyte and Female; Sporophyte Interactions

1992
InPetunia hybrida. the incompatibility reaction is mediated by both the haploid genome of the male gametophyte and the diploid genome of the female sporophyte tissues of pistil. Pollen carried to the stigma surface of the pistil produced the tubes that penetrate the stigma and grow through the style to the ovary.
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Reproductive Multitasking: The Female Gametophyte

Annual Review of Plant Biology, 2020
Thomas Nakel, Rita Gross-Hardt
exaly  

ER-localized auxin transporter PIN8 regulates auxin homeostasis and male gametophyte development in Arabidopsis

Nature Communications, 2012
Zhaojun Ding, Ignacio Moreno
exaly