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Proteomics of Pollen Development and Germination
Journal of Proteome Research, 2007In higher plants, pollen grains represent the vestiges of a highly reduced male gametophyte generation. After germination, the pollen tube delivers the sperm cells by tip-growing to the embryo sac for fertilization. Besides the intrinsic importance for sexual reproduction, pollen development and germination serve as an attractive system to address ...
Shaojun, Dai +3 more
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Germination Schedules of Pollen Grains: Implications for Pollen Selection
Evolution, 1989Temps de germination d'un ensemble de grains de pollen chez Erythronium grandiflorum en fonction de la densite des grains etudies en relation avec la selection pendant la croissance du tube ...
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Germination of Compound Pollen Grains
Grana, 1972Abstract Very little is known about the germination of compound pollen grains of Angiosperms. Pollen of Acacia auriculaeformis, Asclepias curassavica, Calliandra surinamensis, Enterolobium saman, Hoya lacunosa, Mimosa pudica, Nepenthes ampullaria, and Pithecellobium dulce were used to study germination in vitro.
A. N. Rao, E. T. Ong
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Structural and molecular basis of pollen germination
Plant Physiology and Biochemistry, 2023Pollen germination is a prerequisite for double fertilization of flowering plants. A comprehensive understanding of the structural and molecular basis of pollen germination holds great potential for crop yield improvement. The pollen aperture serves as the foundation for most plant pollen germination and pollen aperture formation involves the ...
Wei Zhao +4 more
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Sugarbeet Pollen Germination in Vitro
Journal of Sugarbeet Research, 1988Factors affecting in vitro germination of sugarbeet (Beta vulgaris L.) pollen were investigated to provide improved methods of testing pollen viability. Pollen germinated most frequently and consistently in a liq uid medium (pH 5.5, 100 ppm H3B03, 100 ppm Ca(N03)2 • 4H20, and 3.2 x lOs ppm sucrose in dis tilled water) at 23 C for 24 hours.
R.J. Hecker, M. McClintock
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Lectins stimulate pollen germination
Nature, 1975POLLEN germination involves the conversion of the quiescent vegetative cell into a metabolically active and rapidly growing pollen tube1. Although many external factors influence pollen germination, no predominant control mechanism has been identified. In certain lymphocytes in culture, lectins (plant agglutinins) have been shown to stimulate quiescent
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Pollen Germination and Pollen-Tube Growth
1987Publisher Summary Pollen germination and pollen-tube growth events when viewed either in culture or in the style are considered as biochemically, physiologically, and structurally complex. The various processes involved are each independent in some measure, but still all are interactive—namely, the successful attainment of the delivery of two male ...
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Pollen Germination and Pollen Tube Growth in Vitro
1992Pollen germination and pollen tube growth are prerequisites for fertilization and seed development. Because of the involvement of the pistillate tissue in nature, physiologic and biochemical investigations on pollen germination and pollen tube growth in vivo are rather difficult. In vitro germination techniques have therefore been used extensively on a
K. R. Shivanna, N. S. Rangaswamy
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Zymolyase removes callose from germinating pollen and pollen tube walls
Cell Biology International Reports, 1985The impermeable callosic wall that surrounds germinating pollen grains and pollen tubes is removed by brief treatment with Zymolyase, an enzyme preparation that hydrolyzes linear glucose polymers with beta-1,3 linkages. Zymolyase treatment does not interfere with pollen tube growth or cylosis in the vegetative cell.
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Pollen morphology and germination inNarcissus
The Botanical Magazine Tokyo, 1977Pollen grains of several species and varieties ofNarcissus were examined with a light microscope and a scanning electron microscope. Normal pollen grains were kidney- or spindle-shaped with a germination furrow and a reticulate structure similar to that of the pollen grains ofAmaryllis.
Spring Chen, Rikizo Ueda
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