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Isolation in Musa, Sections Eumusa and Rhodochlamys

N. W. Simmonds
Evolution
Vol. 8, No. 1 (Mar., 1954), pp. 65-74
DOI: 10.2307/2405666
Stable URL: http://www.jstor.org/stable/2405666
Page Count: 10
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Isolation in Musa, Sections Eumusa and Rhodochlamys
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Abstract

The sections Eumusa and Rhodochlamys are composed of diploid species with 22 chromosomes and have a centre of diversity in the Assam-Burma region. Geographical distributions, crossing relationships, fertility and breeding behaviours of F1 hybrids are described for the 28 possible combinations of eight species, four from each section. Geographical and various modes of reproductive isolation occur. Isolation appears to be complete except between two pairs of species of Rhodochlamys. Eumusa is more highly differentiated than Rhodochlamys and is thought to be the older group.

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