000			01792nam a2200217Ia 4500
008			220216s9999 xx 000 0 und d
100			_aJohn Alice
245		0	_aPotential new primary clones of Hevea evolved by ortet selection in India
260			_bJournal of Rubber Research _c2013
300			_a134-146
520			_aAn ortet selection programme for selection of elite mother trees of rubber (Hevea brasiliensis Muell.Arg) from among the seedlings of the Gough Garden (GG) series viz., GGI, GG4 and GG6 of the Prang Besar Isolation (PBIG) gardens in Malaysia was undertaken in a large estate in Central Kerala, South India.The resultant 47 preliminary selections of ortet clones were cloned and evaluated during the forst five yearsof tapping in small scale trials in the same location. The parameters for evaluation were yield and yield components, growth attributes, timber yield, bark anatomical parameters and incidence of leaf diseases. Significant variation was observed for the traits studied. Based on the data on yield, growth and timber characteristics, 11 promising new primary clones were selected. Six clones, viz., KO 27, KO 25, KO 6, KO 9, KO 7, and KO 16 were identified as high rubber yielders. Four clones viz., KO 7, KO 13, KO 22, and KO 31 exhibited a high timber yield potential. Out of the eleven selections, four clones viz., KO 27, KO 7, KO 9, KO 11 were promising in terms of rubber and timber yield. The superiority of the ortet clones with respect to yield and secondary characters are discussed.
650			_aDisease incidence
650			_aHevea brasiliensis
650			_aOrtet selection
650			_aRubber yield
700			_aIdicula P Sabu
700			_aNazeer M A
700			_aThomas Vinod
700			_aVarghese Y Annamma
942			_cJS
999			_c65385 _d65385