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Pollen Germination and Tube Growth
2010Abstract Seeds and grains are staple food supply around the world and their production is the result of successful double fertilization of female gametophytes by male gametophytes. In flowering plants, the highly reduced haploid male gametophyte (pollen grain) plays a critical role in fertilization and crop production through the generation of a ...
Huei-Jing Wang +2 more
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Pollen tube growth in macadamia
Scientia Horticulturae, 1983Abstract Pollen tube growth in macadamia was studied by fluorescence microscopy. The cultivars ‘Kakea’, ‘Keauhou’, ‘Hinde’ and ‘Renown’ showed some self-incompatibility, with pollen tube growth arrested in the style. Inhibited tubes had swollen tips and appeared to discharge their contents through a sub-terminal pore.
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Pollen Germination and Tube Growth
2009In higher plants, the sexual organs, e.g. anther and pistil, are separated spatially either within a flower in hermaphrodite plants or in different flowers as in monoecious plants. Successful fertilization requires temporally and spatially coordinated development of male and female organs and gametophytes.
D.-Q. Shi, W.-C. Yang
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Lipids are required for directional pollen-tube growth
Nature, 1998Successful pollination and fertilization are absolute requirements for sexual reproduction in higher plants. Pollen hydration, germination and penetration of the stigma by pollen tubes are influenced by the exudate on wet stigmas and by the pollen coat in species with dry stigmas.
Wolters-Arts, M. +2 more
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Calcium Control of Pollen Tube Tip Growth
The Biological Bulletin, 1989The role of calcium in pollen tube tip growth is reviewed. Calcium ions are essential for growth, but are inhibitory at high concentrations (above c. 10-2 M). Calcium intake is limited to the growing tip, and the inward flux of calcium appears to establish an ionic current within the surrounding medium. Cellular transport of calcium is reviewed against
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Germination of Lily Pollen: Respiration and Tube Growth
Science, 1965Germinating pollen of Lilium longiflorum (cv. Ace) briefly exhibited a high rate of respiration before pollen tubes began to grow. A second period of high respiration occurred while tubes were growing. Between these periods respiration proceeded at a lower rate.
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Studies on the physiology of pollen and pollen tube growth
Acta Histochemica, 1976Manju Mehan, C.P. Malik
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