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橡胶树新品种‘大丰95’中低割龄产量与其构成因素的关系(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2015年02期
Page:
63-68
Column:
研究论文
publishdate:
2015-04-01

Article Info:/Info

Title:
Relationship between yield and its components in new variety ‘Dafeng 95’ of Hevea brasiliensis at young and middle tapping ages
Article ID:
1000-2006(2015)02-0063-06
Author(s):
WU Chuntai123 LIU Hanwen4 MA Zhengyu4 LI Weiguo123 HUANG Huasun123*
1.Rubber Research Institute, Chinese Academy of Tropical Agriculture Sciences, Danzhou 571737, China;
2.State Center for Rubber Breeding, Danzhou 571737, China;
3.Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture, P. R. China, Danzhou 571737, China;
4.Yangjiang Branch of Hainan Natural Rubber Industry(Group)Corporation Limited, Qiongzhong 572900, China
Keywords:
new variety of Hevea brasiliensis ‘Dafeng 95’ young and middle tapping ages yield components correlation analysis path analysis
Classification number :
S794.1
DOI:
10.3969/j.issn.1000-2006.2015.02.011
Document Code:
A
Abstract:
A new variety ‘Dafeng 95’ of Hevea brasiliensis at young and middle tapping ages selectively bred by National Dafeng Farm of Hainan Province was used as plant materials. The interrelationship among yield and its five related traits including mean annual dry rubber yield per tree per tapping, the number of tapping per year and the number of tappable trees per hectare etc. was investigated by using correlation, path coefficient and multiple regression analysis, and the relative effects of the yield components on yield in the variety of H. brasiliensis were also studied. The results showed that three yield components were closely related with yield, their partial regression coefficients were up to very significant level, and all of their direct path effects were higher positive value. Among the five factors, direct path effect value of the number of tappable trees per hectare was the highest, followed by mean annual dry rubber yield per tree per tapping and the number of tapping per year. And the difference among the three traits reached up to 1% extremely significant level. The technical solution of high-yielding and high-efficiency cultivation for young and middle tapping aged ‘Dafeng 95’ was suggested as follows: besides the necessary number of tapping per year, the number of tappable trees per hectare and mean annual dry rubber yield per tree per tapping should be highly considered. The regression equation “Y=-1 434.745 5+16.113 9X1+8.204 7X2+2.561 7X5” for quantitatively describing the relationship between yield and its components was feasible.

References

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Last Update: 2015-03-31