Landscape gradient of autumn photosynthetic decline in Abies sachalinensis seedlings

作     者：Tetsuto Sugai Wataru Ishizuka Toshihiro Watanabe Tetsuto Sugai;Wataru Ishizuka;Toshihiro Watanabe

作者机构：Hokkaido Research CenterForestry and Forest Products Research InstituteHitsujigaoka 7Sapporo 062-8516Japan Plant Nutrition LaboratoryResearch Faculty of AgricultureHokkaido UniversitySapporo 060-8689Japan Forest Research InstituteHokkaido Research OrganizationBibaiHokkaido 079-0198Japan 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2023年第34卷第1期

页      面：187-195页

核心收录：

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：Japan Society for the Promotion of Science KAKENHI(18J2013908) 

主　　题：Phenology Local adaptation Genetic cline Lowest temperature 

摘      要：Understanding what environmental factors are genetically linked to a phenologic al event is critical for predicting responses to climate *** synthetic phenology often varies among a species of evergreen conifers due to local ***,few empirical studies have revealed relevant relationships between climatic factors in provenance environments and photosynthetic *** study evaluated the effects of environmental conditions of the growing site and seed source provenance on the seasonal changes in maximal photochemical quantum yield of photo systemⅡ(Fv/Fm)in a common garden experiment with 2-year-old seedlings of Sakhalin fir(Abies sachalinensis),a representative species with local adaptation,from four seed source provenances.A logistic model was constructed to explain the seasonal variation of Fv/Fmfrom July to October and the relationships between the estimated model parameters and representative factors featuring provenance environments were *** landscape gradient of the detected model parameters responsible for the provenance environments was visualized in a map of the distribution *** lowest temperature was the most plausible factor in the growing environment to explain the seasonal changes of Fv/*** the representative meteorological factors of provenance environments,the lowest temperatures in July showed significant relationships with two model parameters,explaining the lower limit of Fv/Fmand the higher sensitivity of autumn Fv/*** estimated spatial maps of model parameters consistently showed that the higher the lowest temperature in July in the provenance environment,the lower the Fv/Fmin October and the greater the decrease in the autumn Fv/***,the lowest summer temperature could be associated with the local adaptation of autumn photosynthetic phenology in ***.