Analysis of leaf phenotypic diversity of some Hevea Accessions/clones conserved at the Institute of Agricultural Research for Development (IRAD) Ekona, Cameroon
Rubber Physiology Laboratory, Latex Plant Programme. Institute of Agricultural Research for Development (IRAD) Ekona centre. PMB 25 Buea. South West Region Cameroon.
Research Article
World Journal of Advanced Research and Reviews, 2021, 12(02), 372–378
Publication history:
Received on 02 October 2021; revised on 12 November 2021; accepted on 14 November 2021
Abstract:
This study was carried out to estimate leaf morphological diversity of some accessions/clones from IRRDB 1981 Hevea germplasm collection conserved at IRAD Ekona, to determine the importance of leaf morphological descriptors in differentiating accessions/clones. A total of 36 clones/ accessions were characterized using 6 leaf morphological descriptors. Analysis of variance showed that there were significant differences in the leaf morphological parameters for the studied clones. The Principal Component Analysis (PCA) showed that all leaf descriptors were informative and contributed significantly to the variation. The first 2 Principal Component scores (PCs) accounted for 88% of the total variation. The cluster analysis based on significant PCs grouped all accessions and clones in to 6 main clusters at the distance of 1.5. This study permits the characterization of Hevea accessions and clones in to diverse groups using leaf morphological descriptors; hence this will be advantageous for production of diverse genotypes during breeding programs to broaden the Hevea gene pool.
Keywords:
Cluster; Germplasm; Hevea; Leaf morphology;
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