000			01488nam a2200217Ia 4500
008			220216s9999 xx 000 0 und d
100			_aPremakumari D
245		0	_aGrowth, yield and flow characters and their correlations with brown bast incidence in ten Hevea clones
260			_bIndian Journal of Natural Rubber Research _c1991
300			_a107-113
520			_aTen popular clones were evaluated for growth, latex flow characters, yield and brown bast incidence. Clones differed for initial rate of flow, duration of flow, plugging index, dry rubber content, girth, total volume of latex and dry rubber yield. Girth increment on tapping and incidence of brown bast were not statistically significant. Brown bast incidence was positively correlated with total volume of latex and dry rubber yield. Positive relationships of this trait with initial rate of flow, duration of flow and dry ruber content and its negative relationships with girth increment on tapping and plugging index were not significant. It was indicated that high latex volumea at the initial years of tapping contributed to occurrence of brown bast during subsequent years. Among medium to low yielding clones more interference of other factors was apparent.
650			_aBrown bast
650			_aDry rubber content
650			_aHevea brasiliensis
650			_aLatex flow
650			_aYield
700			_aMarattukalam J G
700			_aPanikkar A O N
700			_aSethuraj M R
942			_cJS
999			_c60177 _d60177