TY - BOOK AU - Mydin K K AU - John A AU - Nazeer M A AU - Prem E E AU - Saraswathyamma C K AU - Thomas V TI - Promising Hevea brasiliensis clones evolved by ortet selection with emphasis on latex-timber traits and response to stimulation PY - 2005/// PB - Journal of Plantation Crops KW - Disease reaction KW - Hevea brasiliensis KW - Latex-timber clones KW - Ortet selection KW - Response to stimulation N2 - An ortet selection programme was undertaken in a large estate in South India and the resultant 46 clones of rubber (Hevea brasiliensis Muell Arg) were evaluated in a small scale trial during the first five years of tapping. The parameters for evaluation were rubber yield and yield components, timber yield, response to stimulation and secondary trials like incidence of leaf and stem diseases. Significant clonal variation for the traits studied helped in the selection of 11 promising new primary clones. Promising rubber yielders, promising timber yielders, latex-timber clones and clones showing response to stimulation were identified. Five clones, MO 45, MO 7, MO 12, MO 28 and MO 48 were comparable in yield with the high yielding check clone RRII 105. Six clones, MO 15, MO 19, MO 45, MO 28, MO 12 and MO 40 had high bole volume and clones MO 49, MO 15 and MO 40 showed good response to stimulation. The superiority of the clones for speciific traits is discussed ER -