Provenance Test on Growth Evaluation of Teak in Honghe
- Received Date: 1998-05-04
- Available Online: 2012-03-17
Abstract: 35 teak provenances were test in Hekou County,Honghe Prefecture,Yunnan Province.At the age of 5,there are remarkable differences in H(height)and DBH among provenances in which 16 surpassed standard provenance(average level)in H and 17 in DBH.Based on criterion for selection 10% over the standard provenance in DBH and 40% over in volumeprovenance 8507,8602,8603,8021,1307,8022,85131,8508 were considered fine.Meanwhile,the average reeal gain of the fine provenances in H,DBH and volume accounted for respectively 17.0%,19.9% and 70.3%,and their expectation genetic gains in H,DBH and volume were separately 10.0%,11.4% and 45.8%.The real gains in volume of the best two provenances came up to 128% and 107% separately.Because of highly closed growth interrelation among ages,selection at early stage would be efficient.