Citation
Chevallier M. H., . Genetic variability of Hevea brasiliensis germplasm using isozyme markers. pp. 42-53. ISSN 0127-7065
Abstract
Isozymes were used to compare the amount of genetic variability of seeds collected in three states in the natural region of Hevea brasiliensis with the cultivated clones (Wickham collection). A high variability appeared: a total of thirty-one (ten loci) and twenty-three alleles (nine loci) were observed respectively for germplasm and Wickham material i.e. 3.1 and 2.55 alleles per polymorphic locus. Acre Rondonia and Mato Grosso are polymorphic at 82.5 73.3 and 97 of their loci respectively. Eleven out of thirteen districts showed positive values of Wrights fixation index F indicating heterozygote deficiencies commonly observed in out-breeding plant populations. Genetic distances and factor analysis showed a wide differentiation between Acre and Mato Grosso with Rondonia falling between the two. A marked homogeneity appeared within Acre and Mato Grosso. Rondonia seemed to be more heterogeneous since one of its districts resembles the Mato Grosso districts and the others are similar to the Acre districts.
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Abstract
Isozymes were used to compare the amount of genetic variability of seeds collected in three states in the natural region of Hevea brasiliensis with the cultivated clones (Wickham collection). A high variability appeared: a total of thirty-one (ten loci) and twenty-three alleles (nine loci) were observed respectively for germplasm and Wickham material i.e. 3.1 and 2.55 alleles per polymorphic locus. Acre Rondonia and Mato Grosso are polymorphic at 82.5 73.3 and 97 of their loci respectively. Eleven out of thirteen districts showed positive values of Wrights fixation index F indicating heterozygote deficiencies commonly observed in out-breeding plant populations. Genetic distances and factor analysis showed a wide differentiation between Acre and Mato Grosso with Rondonia falling between the two. A marked homogeneity appeared within Acre and Mato Grosso. Rondonia seemed to be more heterogeneous since one of its districts resembles the Mato Grosso districts and the others are similar to the Acre districts.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Hevea brasiliensis |
| AGROVOC Term: | Germplasm |
| AGROVOC Term: | Isozymes |
| AGROVOC Term: | Seeds |
| AGROVOC Term: | Cultivated plants |
| AGROVOC Term: | Clones |
| AGROVOC Term: | Factor analysis |
| AGROVOC Term: | Heterozygotes |
| AGROVOC Term: | Genetic variability |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/23544 |
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