The taxonomic status of the wild rice species Oryza ridleyi Hook. f. and O. longiglumis Jansen (Ser. Ridleyanae Sharma et Shastry) from Southeast Asia

被引：0
作者：
Maria Elizabeth B. Naredo
Amita B. Juliano
Bao-Rong Lu
Michael T. Jackson
机构：
[1] International Rice Research Institute,Genetic Resources Center
[2] Fudan University,Institute of Biodiversity Science, School of Life Sciences
来源：
Genetic Resources and Crop Evolution | 2003年 / 50卷
关键词：
Biosystematics; Crossability; Molecular markers; Multivariate analysis; Taxonomy; Wild rice;
D O I：
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摘要：
The taxonomic status of the two species O. ridleyi and O. longiglumis in Oryza series Ridleyanae was resolved using morphological and molecular markers. Cluster analysis using a similarity matrix based on 12 qualitative characters separated the O. ridleyi from the O. longiglumis samples and the O. ridleyi samples from Papua New Guinea (PNG). O. ridleyi and O. longiglumis formed distinct groups upon cluster analysis based on 16 quantitative characters. Canonical discriminant analysis showed significant differences between the two species with anther and ligule length and spikelet and leaf dimensions as the most discriminating characters. Cluster analysis based on RAPD markers showed distinct clusters for O. longiglumis and O. ridleyi samples from different geographic origins. Hybridization studies revealed an F1 sterility barrier in interspecific hybrids and those obtained from intraspecific crosses between O. ridleyi from Southeast Asia and PNG.
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页码：477 / 488
页数：11
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