5个自主培育橡胶树无性系适应性初探

The Adaptability of 5 Clones by Independent Selection in Hevea brasiliensis

为筛选橡胶树自育优良新品种,以5个自主培育无性系为研究材料,结合历年的风、寒害调查资料,对无性系的生长、乳管分化和抗性等性状展开系统的早期鉴定,结果表明:热试87-1和热试87-4整体表现良好,生长较快,乳管分化能力优于对照,抗风性、抗寒性较好,需要重点关注。热试87-5抗逆性突出,但乳管分化能力较弱;热试93-5和热试87-6生长较快,乳管分化能力强,但抗风性和抗寒性表现较差。因橡胶树较长的生长周期及我国多变的植胶区环境类型,上述结论尚需进一步验证。

To breed superior new rubber clones by independent selection, five clones were used as the materials in this experiment, and the characteristics of growth increment, latifieer system and stress resistance were systematically determined for early prediction on the basis of investigation data over the years.The results showed that Reshi 87-1 and Reshi 87-4 performed well on the whole. It grew fast, and the ability of laticifer differentiation was superior to the control,and its resistance to wind damage and cold injury were fine. Reshi 87-5 showed a prominent stress resistance,but its ability of laticifer differentiation was weak. Growth increment and differentiation of laticifer system of Reshi 93-5 and Reshi 87-6 performed well while its resistance to wind damage and cold injury were poorer. Because of long growth period of rubber tree and complex ecological types of rubber panting areas in China, the above conclusion needs further verification.