Author(s): Mani Ramakrishnan
Journal: Maejo International Journal of Science and Technology
ISSN 1905-7873
Volume: 5;
Issue: 01;
Start page: 1;
Date: 2011;
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Keywords: Camellia spp. | morphological diversity | numerical descriptors | tea germplasm
ABSTRACT
Morphological diversity of three Camellia (Theaceae) taxa conserved in an ex situ gene bank was studied and the importance of different descriptors in categorising accessions into distinct groups was also determined. Twelve accessions were characterised using 15 morphological descriptors of IPGRI guidelines. The results of principal component analysis (PCA) on morphological characters showed that the first two principal components accounted for 44.77 % of the total variance. In the evaluated quantitative characters, all three taxa had a coefficient of variation (CV) greater than 24.85%, and within the taxon the CV was greater than 9.59%. The qualitative characters showed a wide range of variations and yielded significant differences (p
Journal: Maejo International Journal of Science and Technology
ISSN 1905-7873
Volume: 5;
Issue: 01;
Start page: 1;
Date: 2011;
VIEW PDF
DOWNLOAD PDF Original pageKeywords: Camellia spp. | morphological diversity | numerical descriptors | tea germplasm
ABSTRACT
Morphological diversity of three Camellia (Theaceae) taxa conserved in an ex situ gene bank was studied and the importance of different descriptors in categorising accessions into distinct groups was also determined. Twelve accessions were characterised using 15 morphological descriptors of IPGRI guidelines. The results of principal component analysis (PCA) on morphological characters showed that the first two principal components accounted for 44.77 % of the total variance. In the evaluated quantitative characters, all three taxa had a coefficient of variation (CV) greater than 24.85%, and within the taxon the CV was greater than 9.59%. The qualitative characters showed a wide range of variations and yielded significant differences (p