2. Institutional Publications

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Subject: search.filters.subject.Anthesis

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    Pollen studies in anthurium andreanum lin.
    (Kerala Agricultural University, 1996) Bindu, M R; Mercy, S T
    Floral biology and pollen characters of five varieties of Anthurium andreanum Lin. have been studied. It was observed that the species is protogynous. Anthesis occurred during early morning hours. The plant produces a large number of pollen grains per anther which are more or less uniform in size, round in shape with a single germ pore. Only a small percentage of pollen grains is fertile which reflects the hybrid nature of the species. Determination of pollen fertility by in vitro pollen germination method is found to be more accurate than by acetocarmine staining.
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    Pollen studies in Anthurium andreanum Lin.
    (Kerala Agricultural University, 1996) Bindu, M R; Mercy, S T
    Floral biology and pollen characters of five varieties of Anthurium andreanum Lin. have been studied. It was observed that the species is protogynous. Anthesis occurred during early morning hours. The plant produces a large number of pollen grains per anther which are more or less uniform in size, round in shape with a single germ pore. Only a small percentage of pollen grains is fertile which reflects the hybrid nature of the species. Determination of pollen fertility by in vitro pollen germination method is found to be more accurate than by acetocarmine staining
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    Floral biology of adapathiyan (Holostemma adakodien schult)
    (Kerala Agricultural University, 1999) Manju, S; Alice Kurian
    An investigation on the floral biology of adapathiyan (Holastemma adakiidian Schult.y was undertaken at the college of Horticulture, Thrissur during the period 1995-1997. The inflorescence is axillary and cymose with bisexual flowers. Flowers open 25 to 28 days after bud initiation and passes through 12 different developmental phases before anthesis. Anthesis commences at 8.30 a.m. and extends up to 10.00 a.m. Anther dehiscence occurs on the fourth day of flower opening from 9.30 a.m. to I p.m. The maximum stigma receptivity was observed on the first day of flower opening. Size of the pollen grains ranged from SO to 75 um with 90-100 % fertility in Brew baker and Kwak's medium.