Browsing by Author "Josy Joseph"

Now showing 1 - 4 of 4
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    Cytogenetic studies in the Genus Cocos- I. Chromosome number in C. austral is and C. nucifera L. vars. spicata and androgena
    (1960-09) Ninan, C.A.; Pillai, R.V.; Josy Joseph
    Chromosome numbers in Cocos australis Mart. (n = 15) and C. nucifera L. varieties spicata (n= 16) and andzogena (n=16) are reported for the first time. The -haploid number n= 15 in C. australis is a new number f&r the genus as also for the family Palmae and is believed to be an aneuploid, derivative of n=L6. Though the tribe Cocoineae of Palmae has been regarded as an instance of homogeneity in evolution, the present observation of n = 15 in C, austratis shows that numerical alterations of chromosomes have also played a role in evolution within the tribe.
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    Epicotyl grafting in nutmeg (Myristica fragrans Houtt.)
    (2007-02-08) Mathew, P.A.; Josy Joseph
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    Floral biology and variation in cinnamon
    (2007-02) Josy Joseph
    The floral biology and the variation in flower characteristics like time taken from planting to the first flower, number of flowering flushes per year, nature of inflorescence, pigmentation in floral parts and structural abnormalities of the flower were studied in 97 plants belonging to 13 accessions of Cinnamomum verum Presl. planted during 1978. The floral biology showed that the flower opens and closes in two stages on two consecutive days. When the flower opens on the first day the stigma appears to be fresh and the anthers are not dihisced. After a few hours the flower closes and the same flower opens on the next day when the stigma shows signs of drying up and the anthers start dehiscing. In 61 plants, the fresh flower opened at noon and closed in the evening. They again opened on the next day morning and closed at noon. In the remaining 36 plants the fresh flower opened in the morning and closed at noon. They again opened next day noon and closed in the evening. Thus the flower appears to be adapted to cross pollination.
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    The Nutmeg-Its Botany, Agronomy, Production, Composition and Uses.
    (2007-02) Josy Joseph
    This literature review on nutmeg (Myristica fragrans Houtt.) covers its history, origin, distribution, taxonomy, phylogeny, botanical description, cultivation practices, breeding, sex inheritance, vegetative propagation, production statistics, trade, chemical composition, and uses.