XU Jiahong, ZENG Qing, ZHANG Maoning, HU Xinweng, WU Yougen, WANG Jian, CHEN Jinhui, LAI Hanggui. Application of Bark Grafting in the Topworking of Low Yielding Camellia oleifera Plantations in Hainan[J]. Journal of Tropical Biology, 2019, 10(1): 47-51. doi: 10.15886/j.cnki.rdswxb.2019.01.008
| Citation:
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XU Jiahong, ZENG Qing, ZHANG Maoning, HU Xinweng, WU Yougen, WANG Jian, CHEN Jinhui, LAI Hanggui. Application of Bark Grafting in the Topworking of Low Yielding Camellia oleifera Plantations in Hainan[J]. Journal of Tropical Biology, 2019, 10(1): 47-51. doi: 10.15886/j.cnki.rdswxb.2019.01.008
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Application of Bark Grafting in the Topworking of Low Yielding Camellia oleifera Plantations in Hainan
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XU Jiahong1,2
,
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ZENG Qing1,2
,
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ZHANG Maoning1,2
,
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HU Xinweng1,2
,
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WU Yougen1,2
,
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WANG Jian1,2
,
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CHEN Jinhui1,2
,
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LAI Hanggui1,2
,
,
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1. Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China;
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2. Ministry of Education Engineering Research Center for Breeding and Sel ection of Tropical Crops, Hainan University, Haikou 570228, China
- Received Date: 2018-11-09
- Rev Recd Date:
2019-03-04
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Abstract
Topworking for change of a crown of a crop is an important method for improving a low-yielding crop. Bark grafting is one of the common practices for topworking and is widely used to improve economic tree crops, or for vegetative propagation. However, there are few reports on topworking of Camellia oleifera trees in Hainan. Fifty one trees of C. oleifera in an oil tree plantation at Shengke village, Yangjiang Town, Qionghai city, Hainan were selected for topworking via barkgrafting. The barkgrafted branches had a survival rate of 85% with 29% of fruiting branches. At the same time, 614 C. oleifera trees in an oil tree plantation at Houchen village, Fushan Town, Chengmai county, Hainan were selected for topworking via barkgrafting. An average number of branches of C. oleifera trees used for barkgrafting per plant was 2.03, and 1.82 grafted branches per plant survived with a survival rate of grafted branches being 89.97%. The results showed that barkgrafting had a high survival rate of grafted branches and can be used for topworking. C. oleifera trees yielded fast and high after topworking via barkgrafting. The barkgrafted branches started to set fruit 2 years after grafting. The topworking C. oleifera trees increased fruit yield by 5.40 kg/tree and oil yield by 0.22 kg/tree at Shangke Village, and fruit yield by 2.74 kg/tree at plot A and 5.59 kg/tree at plot B at Houchen Village as compared to the yield of trees without topworking. These results indicate that barkgrafing is a good practice for topworking of the low yielding C. oleifera plantations in Hainan and that the topworking trees will increase their yield obviously.
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