Performance of indigenous and exotic clones of rubber.1. Early growth performance of 13 clones
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TextPublication details: Placrosym XI,Calicut, India, 1994. Journal of Plantation Crops, 24 (Supplement); 396-402 1996Subject(s): Summary: Thirteen rubber clones of Indian, Malaysian and Chinese origin were evaluated for early growth performance for a period of four years. Clonal variation was studied, correlations worked out and components of variance, heritability and genetic advance estimated. The growth parameters revealed highly significant clonal difference indicating the existence of genetic variability among clones. On the basis of growth indices computed at 16 and 28 months of growth, RRII 118 is the most vigorous clone, followed by RRII 208, RRIM 600 and SCATC 88-13, in that order. Annual girth and annual increment were also the highest for RRII 118 and annual summer girth increment over three years was the highest in the Chinese clone Haiken 1, followed by SACTC 93-114 and RRII 118.
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Thirteen rubber clones of Indian, Malaysian and Chinese origin were evaluated for early growth performance for a period of four years. Clonal variation was studied, correlations worked out and components of variance, heritability and genetic advance estimated. The growth parameters revealed highly significant clonal difference indicating the existence of genetic variability among clones. On the basis of growth indices computed at 16 and 28 months of growth, RRII 118 is the most vigorous clone, followed by RRII 208, RRIM 600 and SCATC 88-13, in that order. Annual girth and annual increment were also the highest for RRII 118 and annual summer girth increment over three years was the highest in the Chinese clone Haiken 1, followed by SACTC 93-114 and RRII 118.
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