Abstract
As local varieties of rice have a very important role as a source of valuable traits in developing high yielding variety through plant breeding programs, it is needed to be characterized. Panicle branching characterization is one of the efforts to understand local varieties of rice characteristics more. We have observed thirtheen characters of panicle branching on 24 West Java local rice varieties. Five panicles of each varieties as accession was observed and statistical analysed. Tukey’s Honest Significant Difference (HSD) test showed differences among accessions in all panicle branching characteristics observed. Based on Principles Component Analysis (PCA), the panicle branching characters observed generally showed the same direction, but among them were not always to be correlated. In the result of clustering based on the ward linkage method, the accessions were divided into two clusters. The first one had 8 members, and the second one had 16 members. The cophenetic correlation coefficient was 0.60, indicated that the clustering through standardized value was faithfully enough to represent the original distances. The result of this research can provide the information for breeder in selecting rice genotypes which have more seeds per panicle as parent in assembling new high yielding rice varieties.
Highlights
Local variety was defined as one which cultivated by subsistence farmer from one generation to the and it had adapted in a specific area
As the parametric statistic requires the assumption of homogeneity of variance and normality distributed, the characters of number of primary panicle branches, number of tertiary panicle branches, secondary branches length, and number of grain per secondary branches were discarded for ANOVA analysis
Variation occurred as an implication of genetic diversity among accessions
Summary
Local variety was defined as one which cultivated by subsistence farmer from one generation to the and it had adapted in a specific area. The local varieties are used by the farmers as the main component of their cultivation based on their knowledge of adapted varieties and quality. It is important to collect and to make a document of such varieties as a source of valuable traits in developing high yielding variety through plant breeding program [1]. Chaudary et al [2] stated that indigenous rice varieties which traditionally cultivated and maintained by the farmers had high level of diversity in genetic, so it could be used as a source in improving yield, performance of agronomic, and resistance to pest and pathogen.
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