文献类型：期刊文献

英文题名：Seed Dormancy Characteristics of Kadsura coccinea (Lem.) A. C. Smith, a Unique Medicinal Plant in Southeast Asia

作者：He, Tieding[1,2,3] Zhong, Wenbin[3] Shao, Fengxia[1,2] Guo, Hongyan[3] Yan, Chao[3] Ge, Xiaoning[1,2,3] Wang, Jia[3] Wang, Sen[1,2]

第一作者：He, Tieding

通信作者：Wang, S[1];Wang, S[2]

机构：[1]Cent South Univ Forestry & Technol, Coll Forestry, Key Lab Cultivat & Protect Non Wood Forest Trees, Minist Educ, Changsha 410004, Peoples R China;[2]Belt & Rd Int Joint Res Ctr Trop Arid Nonwood Fore, Changsha 410004, Peoples R China;[3]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Xinyu 336600, Peoples R China

年份：2023

卷号：14

期号：10

外文期刊名：FORESTS

收录：;EI(收录号：20234414988777);Scopus(收录号：2-s2.0-85175022633);WOS:【SCI-EXPANDED(收录号:WOS:001094367700001)】；

基金：This research was funded by the Research and Utilization of Tropical Arid Non-wood Forest Germplasm Resources in China and Pakistan (Grant No. 2022WK2021)

语种：英文

外文关键词：Kadsura coccinea (Lem.) A. C. Smith; seed dormancy; seed structure; endogenous inhibitors

摘要：Kadsura coccinea (Lem.) A. C. Smith is a significant tree species of non-timber forest. However, the low germination percentage and lengthy germination time of its seeds pose obstacles to industry development. Aiming at the problem of seed dormancy, this study first determined the seed dormancy period through seed germination test, and then comprehensively evaluated the dormancy characteristics by observing the seed coat structure, measuring endogenous inhibitors, and in vitro embryo culture. The results indicated the dormancy of K. coccinea seeds, and that the germination period was up to 80 days. Its seed coat is composed of exotesta and endotesta. The dense seed coat structure causes water absorption and air permeability obstacles to the seeds and causes mechanical restraint to the development of the embryo. Meanwhile, its seeds have substances that inhibit seed germination, and there are germination inhibitors in distilled water, methanol, petroleum ether, and ethyl acetate extracts of kernels and seed coats. The inhibitory activity of kernel petroleum ether extract was the highest, and the inhibitory activity of seed coat methanol extract was the highest. In addition, the embryo of K. coccinea developed completely and could germinate normally under in vitro conditions. This study has basically proved that the dormancy of K. coccinea seeds is caused by the seed coat (physical dormancy) and endogenous inhibitors (physiological dormancy), which provides a scientific theoretical basis to further explore the method of seed dormancy release of K. coccinea.