Results 161 to 170 of about 750 (185)
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Mitochondrial atp6 transcript editing during microgametogenesis in male-sterile sorghum
Current Genetics, 2001A marked reduction of mitochondrial atp6 transcript-editing capability in sorghum anthers and pollen has been invoked as a factor in the loss of viability of male gametophytes in lines carrying the IS1112C male-sterile cytoplasm. We initiated a systematic examination of transcript editing of sorghum atp6 during microgametogenesis, from microspores ...
D R, Pring, H, Van Tang
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Morphogenesis, megagametogenesis, and microgametogenesis in Actinidia arguta flower buds
Scientia HorticulturaeGuangli Shi
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Ultrastructural observations of microgametogenesis in Eimeria bakuensis (Syn. E. ovina) of sheep
Parasitology Research, 1988The ultrastructure of microgametogenesis of Eimeria bakuensis was studied in the intestinal epithelium of an experimentally infected sheep. During development the nuclei became situated peripherally in the microgamont. Nuclear chromatin condensed into peripheral, dense portions that became the nuclei of the microgametes.
S J, Ball, R M, Pittilo
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MOLECULAR GENETIC ANALYSES OF MICROSPOROGENESIS AND MICROGAMETOGENESIS IN FLOWERING PLANTS
Annual Review of Plant Biology, 2005In flowering plants, male reproductive development requires the formation of the stamen, including the differentiation of anther tissues. Within the anther, male meiosis produces microspores, which further develop into pollen grains, relying on both sporophytic and gametophytic gene functions.
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Fine structural changes associated with microgametogenesis of Eimeria acervulina in chickens
Zeitschrift f�r Parasitenkunde, 1973The fine structure of the changes occurring during microgametogenesis and of the microgametes of Eimeria acervulina was studied in experimentally infected chickens. Early microgametocytes had relatively electron-transparent nuclei with few, scattered, dense masses. Micropores were seen at the surface of these microgametocytes. Intranuclear microtubules
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Microsporogenesis, microgametogenesis, and pollen morphology of Ambrosia artemisiifolia L. in China
Plant Systematics and Evolution, 2011Ambrosia artemisiifolia L. from Ambrosia of the Heliantheae of the Asteraceae family is a recognized harmful weed worldwide and one of the major invasive foreign plants in China. In this study, we investigated its reproductive features, focusing on its microsporogenesis, microgametogenesis, and pollen morphology.
Jia-Xi Liu +5 more
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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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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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Zeitschrift f�r Parasitenkunde Parasitology Research, 1983
The ultrastructure of the microgamont and microgamete of the coccidianBarroussia schneideri was studied in the intestinal cells of the centipede,Lithobius forficatus. Microgamonts contained many mitochondria and extensive cisternae of granular endoplasmic reticulum closely associated with polysaccharide granules.
S. J. Ball, R. M. Pittilo
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The ultrastructure of the microgamont and microgamete of the coccidianBarroussia schneideri was studied in the intestinal cells of the centipede,Lithobius forficatus. Microgamonts contained many mitochondria and extensive cisternae of granular endoplasmic reticulum closely associated with polysaccharide granules.
S. J. Ball, R. M. Pittilo
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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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