Cytotaxonomy of Piperaceae
Arati Dasgupta,P. C. Datta +1 more
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TLDR
Records of chromosome number suggest that Peperomia is more primitive than Piper, and numerical and structural change in the two genera appear different, and polyploidy in the former, and structural alteration in the latter.Abstract:
From a comparison of the chromosome numbers of different species, it appears that 11 is the basic number of Peperomia and 12 of Piper. Variation in the reports of chromosome number of the same species may be due to occurrence of chromosomal biotypes.The trend of evolution in the two genera (Peperomia and Piper) appear different, numerical and structural change in the former, and polyploidy in the latter. The basic number (x=11) is represented by Peperomia argyreia, where structural alteration is clear. x×12 is represented by Pep. metallica, Pep. obtusifolia and Pep. pellucida, polyploidy occurring only in the last one.Piper cubeba (2n=24), P. magnificum (2n=24) and P. longum (2n=48), probably form a basic group of Piper. P. nigrum (2n=36, 60) is more advanced in chromosome structure. P. betle (2n=64) represents a different line having x=8 or 16.Records of chromosome number suggest that Peperomia is more primitive than Piper.read more
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Book ChapterDOI
Polyploidy in Angiosperms: Dicotyledons
TL;DR: Goldblatt believes that at least species with numbers of n=ll and above have Polyploidy in their evolutionary history, and perhaps also many of those with n=10 and n=9 may be aneuploid derivatives of ancestors with higher numbers.
Journal ArticleDOI
Identification of sex-specific DNA markers in betel vine (Piper betle L.)
Sanghamitra Samantaray,Arunkumar Phurailatpam,Ashok Kumar Bishoyi,K. A. Geetha,Satyabrata Maiti +4 more
TL;DR: The three male- specific RAPD markers OPA041400, OPA08650 and OPN02850 and two female-specific markers O PA081200 and OPC06980 can reliably differentiate the male and female plants of P. betle L.
Journal ArticleDOI
Structure and Behaviour of Chromosomes in Piper and Peperomia (Family Piperaceae)
Joseph Jose,Arun Kumar Sharma +1 more
TL;DR: Evidence taken in conjunction with the data obtained from anatomy, morphology, palynology, embryology and floral biology, support the separation of the two genera Peperomia and Piper into two different families under Piperales as Peperomiaceae and Piperaceae, as done by certain taxonomists.
Journal ArticleDOI
Polyploidy in a Cultivar of Black Pepper (Piper nigrum L.) and Its Open Pollinated Progenies
TL;DR: Polyploidy in a cultivar of black pepper and numerical chromosomal variation in its twenty progenies were identified by cytological analysis and Morphological types were observed with variation in chromosome number.
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Journal ArticleDOI
Variation and Evolution in Plants.
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Structure and Behaviour of Chromosomes in Piper and Peperomia (Family Piperaceae)
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