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Cytogenetic study of diploid Actinidia chinensis - karyotype, morphology of sex chromosomes at primary differentiation stage and evolutionary significance

Cytogenetic study of diploid Actinidia chinensis - karyotype, morphology of sex chromosomes at primary differentiation stage and evolutionary significance

Acta Horticulturae 610: 379-385

ISSN/ISBN: 0567-7572

The karyotype of diploid Actinidia chinensis is 2n=2x=58=38 m+18 sm (2SAT)+2t. The ratio of the largest chromosome to the shortest chromosome is 2.35 and the karyotype is 2B. Although the 2 SAT-chromosomes have similar lengths and shapes, they are probably the chromosomes responsible for sex determination. The SAT region of nucleolar chromosomes may be the region of sex determination.

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