Determination and Analysis of Growth and Yield on Latex-Timber Combined Hevea Clones

A trial containing 15 Hevea clones was comparatively analyzed and preliminarily evaluated in Rubber Research Institute of Chinese Academy of Tropical Agriculture Sciences (RRIC-CATAS). The 15 test materials were composed of both introduced and selectively bred by RRIC. The commercial clone RRIM 600 was set as control. The results showed that dry rubber content and dry rubber yield per tapping of the 15 clones in different months varied from significantly to extremely significantly. Per tapping and per month production of dry rubber of the 15 clones differed greatly. Growth, latex yield and dry rubber content of most of these clones were not significantly different. Correlation between growth and rubber yield was not significant. Four clones i.e., TSF8, TSF7, TSF10 and CATAS2-73 exhibited good latex-timber combined character.