Citation
Thomas V., . and Nazeer M. A., . and Varghese Y. A., . and John A., . and Idicula S. P., . Potential new primary clones of Hevea evolved by ortet selection in India. pp. 134-146. ISSN 1511-1768
Abstract
An ortet selection programme for selection of elite mother trees of rubber (Hevea brasiliensis Muell. Arg) from among the seedlings of the Gough Garden (GG) series viz. GG1 GG 4 and GG 6 of the Prang Besar Isolation (PBIG) gardens in Malaysia was undertaken in a large estate in Central Kerala South India. The resultant 47 preliminary selections of ortet clones were cloned and evaluated during the first five years of tapping in small scale trials in the same location. The parameters for evaluation were yield and yield components growth attributes timber yield bark anatomical parameters and incidence of leaf diseases. Significant variation was observed for the traits studied. Based on the data on yield growth and timber characteristics 11 promising new primary clones were selected. Six clones viz. KO 27 KO 25 KO 6 KO 9 KO 7 and KO 16 were identified as high rubber yielders. Four clones viz. KO 7 KO 13 KO 22 and KO 31 exhibited a high timber yield potential. Out of the eleven selections four clones viz. KO 27 KO 7 KO 9 and KO 11 were promising in terms of rubber and timber yield. The superiority of the ortet clones with respect to yield and secondary characters are discussed.
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Abstract
An ortet selection programme for selection of elite mother trees of rubber (Hevea brasiliensis Muell. Arg) from among the seedlings of the Gough Garden (GG) series viz. GG1 GG 4 and GG 6 of the Prang Besar Isolation (PBIG) gardens in Malaysia was undertaken in a large estate in Central Kerala South India. The resultant 47 preliminary selections of ortet clones were cloned and evaluated during the first five years of tapping in small scale trials in the same location. The parameters for evaluation were yield and yield components growth attributes timber yield bark anatomical parameters and incidence of leaf diseases. Significant variation was observed for the traits studied. Based on the data on yield growth and timber characteristics 11 promising new primary clones were selected. Six clones viz. KO 27 KO 25 KO 6 KO 9 KO 7 and KO 16 were identified as high rubber yielders. Four clones viz. KO 7 KO 13 KO 22 and KO 31 exhibited a high timber yield potential. Out of the eleven selections four clones viz. KO 27 KO 7 KO 9 and KO 11 were promising in terms of rubber and timber yield. The superiority of the ortet clones with respect to yield and secondary characters are discussed.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Hevea |
| AGROVOC Term: | Clones |
| AGROVOC Term: | Para rubber (tree) |
| AGROVOC Term: | Hevea brasiliensis |
| AGROVOC Term: | Timber |
| AGROVOC Term: | Yields |
| AGROVOC Term: | Disease incidence |
| AGROVOC Term: | Breeding |
| AGROVOC Term: | Productivity |
| AGROVOC Term: | Genotypes |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/22976 |
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