文献类型： 外文期刊
作者： Yao, X. 1 ; Chen, X. 1 ; Wang, J. 1 ; Zhou, J. 1 ; Cai, M. 1 ; Lin, W. 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Danzhou 571737, Hainan, Peoples R China
关键词： Hevea brasiliensis; rootstocks; rootstock-scion interaction; intra-clonal variation; rubber yield
期刊名称：JOURNAL OF RUBBER RESEARCH （ 影响因子：0.667； 五年影响因子：0.618 ）
ISSN： 1511-1768
年卷期： 2017 年 20 卷 3 期
页码：
收录情况： SCI
摘要： In Hevea brasiliensis (Willd. ex A. Juss.) Mall. Arg., the genetic diversity of seedling rootstocks is considered as the major factor responsibles for intro-clonal variation in the latex yield. Genetically uniform clonal rootstock is used to reduce this variation. In this study, the effect of four rootstocks including three clonal rootstocks namely, CATAS 8813, Haiken 2, Dafeng 99 and a seedling rootstock were investigated after grafted to PR 107 with respect to growth, rubber yield, biochemical parameters of latex and intra-clonal variation. Rootstocks significantly affected the sucrose, inorganic phosphorus and thiol contents. The clone CAMS 8813 and seedling rootstocks showed higher sucrose, inorganic phosphorus and thiol contents than the trees of Haiken 2 and Dafeng 99. Dry rubber yield was found to be highest in CATAS 8813 followed by Dafeng 99 and Haiken 2. The three clonal rootstocks reduced intra-clonal variation in latex yield, exhibiting lower range of latex yield and lower coefficient of variation, compared to the seedling rootstocks. The effect of the four rootstocks on the girth growth was not significantly different. The present study suggested that the clonal rootstock CATAS 8813 might be a potential source for improving rubber yield of scion PR 107.
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