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- W17993709 abstract "Adopting a plant improvement programme that combines silviculture andgenetic improvement could increase yields of Calamus manan plantations. Thesilviculture of C. manan is well studied but not on the aspects of geneticimprovement. Information on reproductive biology, which is one of the basis forall genetic improvement programmes, is still lacking for C. manan. The objectiveof this study was therefore to investigate the reproductive biology of C. manan.The study was done in a rattan plantation located at Luasong. Tawau,Sabah. The floral morphology of C. manan was common for species in genusCalamus. Observations showed that C. manan flowered annually but withdifferent intensities. The inflorescence emergence normally occurred in October -December and fruits matured 16-17 months after. No clear relationship wasdetected between inflorescence emergence and meteorological parameters.Anthesis in male plants (41 days) was found to be longer than in female plants (25days). There were about 60,000 and 9,000 pollen grains in pre-anthesis and fallenflowers, respectively. C. manan pollens could maintained half of its initial viability for four, eight and twelve weeks if desiccated and stored at 25°C, 4°Cand -18°C, respectively. Anthesis occurred at night, suggesting the important roleof nocturnal insects especially moths in pollination. Bees were proposed aspollinators during the daytime. A controlled pollination experiment wasconducted to determine the best pollination bag and the differences between freshand stored pollens in effecting fertilization. The sex ratio in a planted populationwas found to be male-biased but had a tendency to move towards unity as the ageof the stand increased. The fruit production capacity of C. manan increased as theplants grew older.The implications of the reproductive characteristics on plantationestablishment of C. manan are discussed." @default.
- W17993709 created "2016-06-24" @default.
- W17993709 creator A5062929130 @default.
- W17993709 date "1999-01-01" @default.
- W17993709 modified "2023-09-27" @default.
- W17993709 title "Reproductive Biology of Calamus Manan Miquel" @default.
- W17993709 hasPublicationYear "1999" @default.
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