Chemometric Analysis Of Oil Palm (Elaeisguineensis Jacq. ) Germplasm From Senegal And Gambia
Estimation of genetic diversity and determination of the relationships between collections are useful strategies for ensuring efficient germplasm collection and utilization. Oil palm germplasm materials collected from Senegal and Gambia maintained at the MPOB Kluang Station were characterized for...
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| Summary: | Estimation of genetic diversity and determination of the relationships between
collections are useful strategies for ensuring efficient germplasm collection and
utilization. Oil palm germplasm materials collected from Senegal and Gambia
maintained at the MPOB Kluang Station were characterized for genetic diversity. A
total of 44 agronomic traits of these oil palm materials were subjected to simple
statistics to evaluate the genetic variability; and two chemometric techniques (PCA
and Cluster analysis) to identify the characters contributing to the overall variation and
classify the materials based on similarity. Results of the variability profile showed that
the Senegal and Gambia oil palm germplasm exhibited low to high variability for the
various traits. Nine principal components with eigenvalue >1 accounted for 88 % of
the total variation with PCI capturing majority of the variation. Most of the traits
especially, FFB, ABW, BWT, MFW, P/B, M/F, OY, TEP, TDM, BDM, e, S/F, K/F,
O/B and K/B contributed to divergence between and within the germplasm, indicating
that wide variation exists in the germplasm materials studied. Ward's cluster analysis
based on the PCA results grouped the 42 oil palm accessions into six clusters with
cluster-VI having the highest number of members. Furthermore, there was no
association between genetic diversity and geographical origin. Means of the
agronomic traits of each cluster showed that cluster-III had the highest mean value of
yield traits. Also, the cluster groups having high mean values for desired traits could
be selected for the traits per se. These accessions could be used to produce high
yielding oil palm materials. |
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