000			01326nam a2200181Ia 4500
008			220216s9999 xx 000 0 und d
100			_aVarghese Y A
245		0	_aPerformance of indigenous and exotic clones of rubber.1. Early growth performance of 13 clones
260			_bPlacrosym XI,Calicut, India, 1994. Journal of Plantation Crops, 24 (Supplement); 396-402 _c1996
520			_aThirteen 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.
650			_aGrowth
650			_aRubber
700			_aJohn A
700			_aPanikkar A O N
700			_aSaraswathyamma C K
700			_aSethuraj M R
942			_cJS
999			_c64740 _d64740