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- W2009397319 abstract "The karyotype of Ephedra foliata-a strictly dioecious species, has been studied from root tips, stem apices, female gametophyte and male gametophyte.The haploid set consist of seven chromosomes in a 1 M+3m+1sm+2st arrangement i.e. 5V's+2J's. From among the 5V's two chromosomes one with Median point primary constriction (M) and one with a median region primary constriction (m) are satellited, the satellite in the latter case being on the short arm. Meiotic and karyotypic studies lend a strong evidence that the sex determining mechanism in this plant is related to satellites in the Metacentric pair CC. In female plants the two homologues of this Metacentric pair have two satellites one on each arm i.e.V V, whereas in the male plants one homologue has two satellites (one on each arm) while the other has it only on one arm i.e.V V." @default.
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- W2009397319 date "1981-01-01" @default.
- W2009397319 modified "2023-09-27" @default.
- W2009397319 title "Karyotype and mechanism of sex determination in Ephedra foliata Boiss. - A dioecious gymnosperm." @default.
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- W2009397319 doi "https://doi.org/10.1508/cytologia.46.173" @default.
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