Results 121 to 130 of about 519 (135)
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Rye B Chromosomes Influence the Dynamics of Histone H3 Methylation during Microgametogenesis
Cytogenetic and Genome Research, 2014We have studied the trimethylation dynamics of lysines 4 and 27 of histone H3 in rye with and without B chromosomes (Bs) in root tip mitosis, meiosis, and pollen grain mitosis by immunostaining. In root meristems, H3K4me3 immunolabeling was homogeneous along the chromosome arms of the normal complement (As), with the exception of the pericentromeric ...
Mónica, González-Sánchez +3 more
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Micron, 2012
Dynamics of plastids and mitochondria during microgametogenesis in watermelon were examined by means of transmission electron microscopy. Plastids are present as proplastids in the microspore and as amyloplasts in the vegetative cell of the bicellular pollen grain, whereas the generative cell is completely devoid of plastids, suggesting that microspore
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Dynamics of plastids and mitochondria during microgametogenesis in watermelon were examined by means of transmission electron microscopy. Plastids are present as proplastids in the microspore and as amyloplasts in the vegetative cell of the bicellular pollen grain, whereas the generative cell is completely devoid of plastids, suggesting that microspore
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[Microsporogenesis y microgametogenesis de annatto (Bixa orellana L.)].
Acta cientifica venezolana, 2003A series of buds of increasing maturity were individually sampled in order to examine cytological events of annatto (Bixa orellana L.), genotype Portuguesa. They were fixed in Carnoy II at 12:30 am, time of the highest rate of meiotic division. Three stain solutions were attempted.
Claret, Michelangeli +3 more
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Plant Science, 1987
We have investigated the sequential stages of microgametogenesis by electron microscopy, to determine the basis of maternal inheritance of plastids in Epilobium. The development of both the vegetative and generative cells has been followed using a semi-artificial growth system for pollen tubes.
Udo K. Schmitz, Klaus V. Kowallik
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We have investigated the sequential stages of microgametogenesis by electron microscopy, to determine the basis of maternal inheritance of plastids in Epilobium. The development of both the vegetative and generative cells has been followed using a semi-artificial growth system for pollen tubes.
Udo K. Schmitz, Klaus V. Kowallik
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Microsporogenesis and Microgametogenesis of Male‐Sterile Mutant ms1 in Alfalfa
Crop Science, 2013ABSTRACTThe use of male sterile lines is one of the ways to reduce the selfing rates and thus maximize heterosis in alfalfa (Medicago sativa L.). A spontaneous, stable male sterile mutant ms1 has been derived from M. sativa ‘Graze401’. In this paper, the microsporogenesis and microgametogenesis have been examined in ms1 and wild‐type plants under light
Xiaojuan Wang +4 more
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Fine structure of microgametogenesis of Eimeria ferrisi Levine and Ivens 1965 in Mus musculus
Zeitschrift f�r Parasitenkunde, 1977The microgamogony of Eimeria ferrisi from experimentally infected mice was investigated with the electron microscope. Microgamonts were recognizable by the presence of peripherally arranged nuclei and the presence of single or paired centrioles between each nucleus and the limiting membrane of the parasite.
E, Scholtyseck +3 more
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Chromosoma, 1953
1. The technique for making autoradiographs with stripping film is described in detail. Methods for administering P32 to plants and for preparation of tissues for autoradiographs are given. 2. Two different methods, enzyme digestion and acid hydrolysis, which were used for separating RNA, DNA, and phosphoprotein in tissue sections, were ...
J H, TAYLOR, R D, McMASTER
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1. The technique for making autoradiographs with stripping film is described in detail. Methods for administering P32 to plants and for preparation of tissues for autoradiographs are given. 2. Two different methods, enzyme digestion and acid hydrolysis, which were used for separating RNA, DNA, and phosphoprotein in tissue sections, were ...
J H, TAYLOR, R D, McMASTER
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Plant Systematics and Evolution, 2013
In the present study, microsporogenesis, microgametogenesis and pollen wall ontogeny in Campsis radicans (L.) Seem. were studied from sporogenous cell stage to mature pollen using transmission electron microscopy. To observe the ultrastructural changes that occur in sporogenous cells, microspores and pollen through progressive developmental stages ...
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In the present study, microsporogenesis, microgametogenesis and pollen wall ontogeny in Campsis radicans (L.) Seem. were studied from sporogenous cell stage to mature pollen using transmission electron microscopy. To observe the ultrastructural changes that occur in sporogenous cells, microspores and pollen through progressive developmental stages ...
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Embryology of Jubaeopsis Caffra Becc.: 1 Microsporangium, Microsporogenesis and Microgametogenesis
Journal of South African Botany, 1976openaire +1 more source
Morphogenesis, megagametogenesis, and microgametogenesis in Actinidia arguta flower buds
Scientia HorticulturaeXiang Li +5 more
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