Pollination and seed dispersal of Aquilaria sinensis(Lour.)Gilg(Thymelaeaceae):An economic plant species with extremely small populations in China  

作　　者：Gao Chen Changqiu Liu Weibang Sun 

机构地区：[1]Kunrning Botanical Garden,Kunrning Institute of Botany,Chinese Academy of Sciences,Kunrning 650201,Yunnan,China [2]Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,Yunnan,China

出　　处：《Plant Diversity》2016年第5期227-232,共6页植物多样性（英文版）

基　　金：provided by grants from the NSFCYunnan joint fund on key projects to W.B.Sun(No.U1302262);the National Natural Science Foundation of China to G.Chen(31670322);the Young Academic and Technical Leader Raising Foundation of Yunnan Province(No.2015HB091);the Science and Technology Research Program of Kunming Institute of Botany,the Chinese Academy of Sciences(No.KIB2016005)to G.Chen

摘　　要：Pollination and seed dispersal in angiosperms have long been investigated in order to understand the coevolution of plants and animals.However,the signals from flowers and/or seeds to attract pollinators and/or seed dispersers have received comparatively little attention.In this study,the pollination biology and seed dispersal of the vulnerable agarwood plant Aquilaria sinensis(Lour.) Gilg,a traditional medicinal plant in China,was studied in its natural distribution range.The reproductive tactics of A.sinensis were studied in detail by employing various tests dealing with fruit set and also seed dispersal.Dynamic headspace extraction followed by GC-MS analysis was also performed in order to reveal the composition of floral scent.The results showed that noctuids and pyralids are the most effective pollinators of pollinator-dependent A.sinensis.The main compounds of the floral scent were(E,E)-α-Farnesene(61.9 ± 3.2%),trans-Ocimene(16.6 ± 1.2%),and Benzyl salicylate(4.6 ± 1.1%).The results obtained from seed dispersal experiments indicate that hornets are effective seed dispersers and they may play an important role in long-distance seed dispersal of A.sinensis.Based on our findings,we recommend several protection methods for this threatened agarwood plant in China.Pollination and seed dispersal in angiosperms have long been investigated in order to understand the coevolution of plants and animals. However, the signals from flowers and/or seeds to attract pollinators and/or seed dispersers have received comparatively little attention. In this study, the pollination biology and seed dispersal of the vulnerable agarwood plant Aquilaria sinensis （Lour.） Gilg, a traditional medicinal plant in China, was studied in its natural distribution range. The reproductive tactics ofA. sinensis were studied in detail by employing various tests dealing with fruit set and also seed dispersal. Dynamic headspace extraction followed by GC-MS analysis was also performed in order to reveal the composition of floral scent. The results showed that noctuids and pyralids are the most effective pollinators of pollinator-dependent A. sinensis. The main compounds of the floral scent were （E, E）-α-Farnesene （61.9± 3.2%）, trans-Ocimene （16.6± 1.2%）, and Benzyl salicylate （4.6 ± 1.1%）. The results obtained from seed dispersal experiments indicate that hornets are effective seed dispersers and they may play an important role in long-distance seed dispersal of A. sinensis. Based on our findings, we recommend several protection methods for this threatened agarwood plant in China.

关 键 词：Aquilaria GC-MS POLLINATION PYRALIDAE Seed dispersal VESPA 

分 类 号：Q948[生物学—植物学]