00721nam a2200121Ia 4500008004100000100002000041245009800061520036000159650001500519650002200534650002300556650002000579220104s9999    xx            000 0 und d  aRatnayake C M B 3aAn  assay of growth inhibitors in seed oil and normal and diseased (brown bast) bark of Hevea  aThis paper was presented at the International Rubber Conference 1973 in Sri Lanka. Content of growth inhibitors was significantly higher in diseased than in healthy rubber bark but it is not yet established that the increase causes the disease. High yielding clones are generally more susceptible to brown bast and may have susceptibility bred in to them.  aBrown bast  aGrowth inhibitors  aHevea brasiliensis  aRubber seed oil