000 01452nam a22001697a 4500
100 _aKrishan, B.
245 _aEarly yield and growth performance of Hevea clones evolved by ortet selection from polycross population in Odisha, Eastern India.
260 _bRubber Science, 36(2): 2023. 194-198.
520 _aEvaluation of ten ortet clones was carried out in a clonal nursery trial under dry sub-humid conditions of Odisha state in eastern region of India. The ortet clones were assessed for yield based on test tapping, girth and girth increment, bark thickness, first branching height and number of primary branches. Ortet clones O 3 and O 4 recorded high annual yield of 114.8 g t-1 10t-1 and 116.4 g t-1 10t-1 respectively over three years. On the basis of pooled yield, two ortet clones viz. O 3 and O 4 were found superior to RRIM 600, IRCA 111, SCATC 93-114 and comparable with RRII 208, the clone recommended for eastern India. Five ortet clones viz. O 3, O 4, O 5, O 8 and O 10 had better girth and girth increment. Clones O 3, O 4 and O 10 recorded high bark thickness. Clones O 3, O 4 and O 8 recorded high branching height. Four ortet clones viz. O 3, O 4, O 7 and O 10 were found superior in terms of yield and growth. These selections will be subjected to further large scale evaluation.
650 _aClones
650 _aGirth
650 _aOrtets
650 _aPolycross
650 _aTest tap
650 _aYield
942 _cJS
999 _c75206
_d75206