速生高产品种‘热垦523’的试种研究

通过对2000年在海南、云南、广东等地建立的11个胶木兼优试种区无性系10 a的系统观察,结果表明:‘热垦523’是一个速生高产无性系。在热科院试验区,其生长较快,年均增速达7.99 cm,可提早1 a开割;产量高,年均株产1.98 kg,显著优于对照‘RRIM600’;在生产系比区,高于对照‘GT1’、‘云研77-4’等。白粉病和炭疽病抗性为中感和中抗,抗风性与‘RRIM600’相当,死皮率低于对照,胶乳生理基础较好。其主要缺点是抗寒性较差,2008年在寒害中表现与‘PR107’差异不大。鉴于该品种很高的单产,在海南、云南等地轻寒、轻风区有较大应用潜力。

Trial Planting of Fast-growing and High-yileding Rubber Clone Reken 523

After 10 years systematical observation on hevea clones of trials located in Hainan, Guangdong and Yunnan Province from 2000, it was found Reken 523 was a fast-growing and high-yielding clone. The annual stem increment reached 7.99 cm and could be cut one year earlier than normal clones. It had middle resistance to both powdery midew disease and rubber tree anthracnose. The resistance to wind injury was medium and TPD rate was lower than the control. At the same time, Reken 523 revealed high-yielding potential based on its latex physical diagnose. The main shortcoming was poor resistance to cold injury. But the cold injury was not remarkablly different from PR107 in 2008. This clone has great extention protential in Hainan and Yunnan where climatic type belongs to light wind and cold injury.