Relationship between the number of tapping-induced secondary laticifer lines and rubber yield among Hevea germplasm

Abstract

The lack of suitable early selection parameters means that traditional rubber breeding for yield is time-consuming and inefficient. Laticifer is a tissue specific for natural rubber biosynthesis and storage in rubber tree. The number of the secondary laticifers in the trunk bark tissues is positively correlated with rubber yield in the matured rubber trees that are regularly tapped. In the present study, the rubber yield from 280 of 4–5 year-old virgin trees from 7 cross combinations was compared with the number of newly differentiated secondary laticifers caused by tapping. Results showed that the number of tapping-induced lines of secondary laticifers varied in different germplasm and was positively related to the rubber yield, indicating this could be used as a suitable parameter for early evaluation of yield potential of rubber trees.

Keywords

Hevea brasiliensis / rubber yield breeding / early evaluation / tapping / secondary laticifer differentiation

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (31300504) and the Earmarked Fund for China Agriculture Research System (CARS-34-GW1).

Supplementary materials

The online version of this article at http://dx.doi.org/10.15302/J-FASE-2016122 contains supplementary materials (Appendix A).

Compliance with ethics guidelines

Yueyi Chen, Xinsheng Gao, Xiaofei Zhang, and Weimin Tian declare that they have no conflict of interest or financial conflicts to disclose.

This article does not contain any studies with human or animal subjects performed by any of the authors.

RIGHTS & PERMISSIONS

The Author(s) 2016. Published by Higher Education Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0)