Genetic divergence for growth and wood parameters in different clones of Casuarina equisetifolia

Vishnu R., . and Anoop E. V., . and Warrier K. C. S., . and Anish M. C., . Genetic divergence for growth and wood parameters in different clones of Casuarina equisetifolia. pp. 615-621. ISSN 0128-1283

Forty-six Casuarina equisetifolia clones were evaluated for growth and wood parameters to study their genetic divergence. The clones were grouped into seven clusters using Mahalanobis D2 analysis. Vessel frequency contributed maximum (51.50) towards divergence followed by specific gravity (16.23). Maximum intercluster distance was observed between clusters 3 and 5 (14.58) followed by clusters 5 and 7 (12.098). Intracluster distance was maximum in cluster 5 (9.225) followed by clusters 6 (8.991) 7 (8.068) and 1 (7.700). Highest value of heritability genetic advance and genetic gain were obtained for specific gravity fibre length and volume respectively. Both phenotypic coefficients of variation (PCV) and environmental coefficients of variation (ECV) were highest for vessel frequency while genotypic coefficients of variation (GCV) was highest for volume. ECV was observed to be higher than GCV for all the traits showing the influence of environmental factors on these traits. The results on genetic divergence had potential for immediate application in the establishment of clonal seed orchards. Information on genetic divergence provides an opportunity for hybridisation among the genotypes and obtaining quality seeds with high vigour.

Full text available from: Official URL: https://www.frim.gov.my/v1/jtfsonline/jtfs/v30n4/6...

Abstract

Forty-six Casuarina equisetifolia clones were evaluated for growth and wood parameters to study their genetic divergence. The clones were grouped into seven clusters using Mahalanobis D2 analysis. Vessel frequency contributed maximum (51.50) towards divergence followed by specific gravity (16.23). Maximum intercluster distance was observed between clusters 3 and 5 (14.58) followed by clusters 5 and 7 (12.098). Intracluster distance was maximum in cluster 5 (9.225) followed by clusters 6 (8.991) 7 (8.068) and 1 (7.700). Highest value of heritability genetic advance and genetic gain were obtained for specific gravity fibre length and volume respectively. Both phenotypic coefficients of variation (PCV) and environmental coefficients of variation (ECV) were highest for vessel frequency while genotypic coefficients of variation (GCV) was highest for volume. ECV was observed to be higher than GCV for all the traits showing the influence of environmental factors on these traits. The results on genetic divergence had potential for immediate application in the establishment of clonal seed orchards. Information on genetic divergence provides an opportunity for hybridisation among the genotypes and obtaining quality seeds with high vigour.

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Item Type:	Article
AGROVOC Term:	Casuarina equisetifolia
AGROVOC Term:	Clones
AGROVOC Term:	Breast height diameter
AGROVOC Term:	Evaluation techniques
AGROVOC Term:	Radial growth (trees)
AGROVOC Term:	Wood properties
AGROVOC Term:	Fibre plants
AGROVOC Term:	Specific gravity
AGROVOC Term:	Genotypes
AGROVOC Term:	Heritability
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	26 Apr 2025 03:15
URI:	http://webagris.upm.edu.my/id/eprint/24768

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