A molecular marker-based linkage map of diploid bananas (Musa acuminata) |
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Authors: | S. Fauré J. L. Noyer J. P. Horry F. Bakry C. Lanaud D. Gońzalez de León |
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Affiliation: | (1) CIRAD-BIOTROP, B.P. 5035, 34032 Montpellier Cedex, France;(2) CIRAD-IRFA, station de Neufchâteau, Sainte-Marie, 97130 Capesterre Belle-Eau, Guadeloupe, France;(3) Present address: CIMMYT Int., Lisboa 27, Colonia Juàrez, Apdo, Postal 6-641, 06600 México, D.F., México |
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Abstract: | A partial molecular linkage map of the Musa acuminata diploid genome is presented. This map is based on 58 RFLP, four isozyme and 28 RAPD markers segregating in an F2 population of 92 individuals. A total of 90 loci was detected, 77 of which were placed on 15 linkage groups while 13 segregated independently. Segregation distortions were shown by 36% of all loci, mostly favoring the male parent. Chromosome structural rearrangements were believed to be one of the main causes of these distortions. The use of genetic linkage data to further the genetic and evolutionary knowledge of the genus Musa, as well as to help improve the design of breeding strategies, is discussed. |
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Keywords: | Musa acuminata RFLPs RAPDs Linkage map Segregation distortion |
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