文献类型：期刊文献

英文题名：Variation in Seed and Seedling Traits among Fifteen Chinese Provenances of Magnolia officinalis

作者：Shu, Xiao[1] Yang, Xu[1] Yang, Zhiling[1]

第一作者：Shu, Xiao

通信作者：Yang, ZL[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China

年份：2012

卷号：40

期号：2

起止页码：274-283

外文期刊名：NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000311589900041)】；

基金：This research was supported by the Ministry of Science and Technology in China (200704022), Natural Science Foundation Key Project of Zhejiang Province (z3100041) and the National Natural Science Foundation of China (31270585).

语种：英文

外文关键词：net assimilation rate; provenances; relative growth rate; seed germination; seed morphology

摘要：Magnolia officinalis seeds were collected from 15 different provenances, ranging from 336 to 1387 m in China. The main objective of this study was to identify germplasm resources of M. officinalis by test seed traits, seed germination, seedling traits, and seedling growth rate. There are significant differences among provenances in all studied attributes except relative growth rate and the net assimilation rate. Seed weight exhibited maximum variation among provenances in seed morphometric traits with a significant positive correlation in terms of average annual temperature and average annual rainfall, and negative correlation with latitude of seed origin. Overall average seed germination in nursery was 59.4% varying from 26.6% to 91.2%. Seedling height decreased by geographical latitude gradually from south to north, while stem diameter declines from east to west. That means the geographic variation of the plant at the seedling stage manifests a two-way variation with the latitude and longitude. Seed of Longsheng, Yangxian, Jingning, Wuyishan, Kaixian and Ningqiang provenance have been identified suitable to produce quality seedlings. It can be concluded that the observed patterns of variation will have implications for genetic resources conservation and tree improvement.