Genetic Diversity of the 1995 RRIM Hevea Germplasm Collection for Utilisation in the Rubber Breeding Programme
| Autor: | N. Aizat Shamin, A. F. Adifaiz, S. Roslinda, Mohd Y. Rafii, N. A. Maiden, Z. Suleiman |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Germplasm Genetic diversity biology Organic Chemistry 04 agricultural and veterinary sciences Plant Science Heritability biology.organism_classification 03 medical and health sciences Horticulture 030104 developmental biology Genetic distance Genetic variation 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Plant breeding Hevea brasiliensis Hevea |
| Zdroj: | Journal of Rubber Research. 21:153-164 |
| ISSN: | 2524-3993 1511-1768 |
| DOI: | 10.1007/bf03449167 |
| Popis: | This paper highlights major findings on genetic diversity of the 1995 RRIM Hevea germplasm collected from Brazilian states of Amazonas and Para. Results of this investigation revealed the presence of significant variations among genotypes of Hevea brasiliensis originating from eight different locations. Higher phenotypic coefficient of variation compared to genotypic coefficient of variation was observed for all characters studied indicating environmental influence on the expression of characters mentioned above. Latex yield recorded the highest magnitude of heritability coupled with the highest genetic advance signifying that selection of this character has a good response. The highest genetic distance was observed between Manaus and Atalaia do Norte while the lowest was between Benjamin Constant and Atalaia do Norte. According to cluster analysis, the eight collection origins were clustered into three groups. The first four components in the principal component analysis accounted for around 99. 70% in total variation of all main characters. These materials will be used for selection, genetic improvement and incorporation in Malaysian Rubber Board’s rubber breeding programme for the development of superior latex timber clones. |
| Databáze: | OpenAIRE |
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