000			01497nam a2200205Ia 4500
008			220216s9999 xx 000 0 und d
100			_aPremakumari D
245		0	_aStudies on the intraxylary phloem and its association with certain growth characters in Hevea brasiliensis (Willd. ex. Adr. de Juss.) Muell. Arg.
260			_bIndian Journal of Natural Rubber Research _c1988
300			_a41-44
520			_aQuantitative differences in the number of primary xylem points, number of intraxylary phloem points and the thickness of xylem and phloem in one year old twigs were assessed in eight clones of Hevea brasiliensis. The linear relationship of these structural characteristics on the growth characteristics such as diameter of the twigs of the tapping trees and girth increment on tapping were also examined. The data revealed marked differences of anatomical and growth chracters among clones. The number of intraxylary phloem points had significant association with the number of primary xylem points (r=0.8158**), twig diameter(r=0.4231*). The number of primary xylem points also was correlated with the twig diameter (r=0.5258**). This trait also showed a positive relationship with the rate of girth increment on tapping though not significant.
650			_aHevea brasiliensis
650			_aHevea brasiliensis
650			_aIntraxylary phloem
650			_aIntraxylary phloem
650			_aProtoxylem
650			_aProtoxylem
700			_aPanikkar A O N
942			_cAR
999			_c47071 _d47071