Study on the Grafting Technique of Dalbergia odorifera

YANG Zeng-jiang; XU Da-ping; ZHANG Ning-nan; YAO Qing-duan; GUO Jun-yu; LIN Qing-jin

Dalbergia odorifera T. Chen is one of the two most precious tree species naturally distributed in China. The grafting techniques of D. odorifera were studied through comparing grafting methods, grafting seasons, rootstock grades as well as scion buds. The results showed that both "scarf joint grafting" and traditional cleft grafting were feasible for stem grafting. The two-bud "scarf joint grafting" got the best survival rate, while the cleft grafting was easy to operate. The best grafting seasons varied in the light of climate. In the warm southwest of Hainan island, the best grafting season was winter when the survival rate could achieve as high as 99.1%. While in Guangzhou, the best grafting season was the end of fall, and the corresponding survival rate was 94.6%. The quality of rootstock as well as scion bud affected the growth of scion bud directly. The growth of grade I buds/grade I rootstocks were 17 times that of grade III buds/grade III rootstocks. The study was beneficial for the preservation of high quality germplasm resources as well as for clone grafting of D. odorifera.

1. Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, Guangdong, China

2. Forestry Bureau of Zhangzhou, Fujian Province, Zhangzhou 363000, Fujian, China

3. Experimental Station of Tropical Forestry, Ledong Country, Ledong 572542, Hainan, China

Received Date: 2010-07-08

Abstract: Dalbergia odorifera T. Chen is one of the two most precious tree species naturally distributed in China. The grafting techniques of D. odorifera were studied through comparing grafting methods, grafting seasons, rootstock grades as well as scion buds. The results showed that both "scarf joint grafting" and traditional cleft grafting were feasible for stem grafting. The two-bud "scarf joint grafting" got the best survival rate, while the cleft grafting was easy to operate. The best grafting seasons varied in the light of climate. In the warm southwest of Hainan island, the best grafting season was winter when the survival rate could achieve as high as 99.1%. While in Guangzhou, the best grafting season was the end of fall, and the corresponding survival rate was 94.6%. The quality of rootstock as well as scion bud affected the growth of scion bud directly. The growth of grade I buds/grade I rootstocks were 17 times that of grade III buds/grade III rootstocks. The study was beneficial for the preservation of high quality germplasm resources as well as for clone grafting of D. odorifera.

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Study on the Grafting Technique of Dalbergia odorifera

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References

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