Morpho-agronomic diversity of thirty-nine Philippine populations of Oryza officinalis Wall ex. Watt

Issue Date

9-2005

Abstract

Thirty-nine Philippine populations of Oryza officinalis Wall ex. Watt were characterized using a total of 29 morpho-agronomic characters. The populations showed variation in leaf, culm, panicle and grain characteristics. Ten qualitative characters were found polymorphic. The quantitative characters had a wide range of values falling into 3 to 6 frequency classes. Shannon-Weaver diversity estimates were generally high for most polymorphic characters. H' values ranged from 0.291 to 0.996. Multivariate analyses showed the consistent grouping of old and new collections into separate groups. In general, association between a cluster and geographic origin was poor where well-represented regions yielded separate groups. In a few cases, though, certain geographic populations may group together. The 39 local populations were found to be diverse. Recommendations in relation to the ex situ conservation of the local wild rice species are suggested.

Source or Periodical Title

Philippine Agricultural Scientist

ISSN

317454

Volume

88

Issue

3

Page

281-291

Document Type

Article

Language

English

Subject

Cluster analysis, Ex situ conservation, Genetic diversity, Morpho-agronomic characterization, Oryza officinalis, Philippine wild rice

Digital Copy

none

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