TY - BOOK AU - Ratnayake C M B TI - An assay of growth inhibitors in seed oil and normal and diseased (brown bast) bark of Hevea KW - Brown bast KW - Growth inhibitors KW - Hevea brasiliensis KW - Rubber seed oil N2 - This 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 ER -