森林工程2025，Vol.41Issue(3)：471-485,15.DOI:10.7525/j.issn.1006-8023.2025.03.004
小兴安岭地区水曲柳家系径向生长与木质部解剖特征对低温的响应
Response of Radial Growth and Xylem Anatomical Characteristics of Fraxinus mandshurica Families to Low Temperature Event in Xiaoxing'an Mountains
摘要
Abstract
Fraxinus mandshurica is one of the precious broadleaf tree species in Northeast China.It has high economic and ecological value.There's a shortage of F.mandshurica resources and a structural deficiency in resilient cultivars.It's particularly important to select and breed F.mandshurica with excellent cold resistance in the context of global cli-mate change.The F.mandshurica in Xiaoxing'an Mountains of Heilongjiang Province were selected as the reseach ob-jects.Dendrochronology and wood anatomy were used to compare the radial growth of 52 F.mandshurica families(Fami-lies 1-77 in total).The relationship between the radial growth and xylem anatomical characteristics of F.mandshurica and main climatic factors was clarified.The response of F.mandshurica families to low temperature event was studied.The results showed that there were significant differences in average annual radial growth of F.mandshurica families in Xiaoxing'an Mountains.The radial growth of No.56,46 and 38 F.mandshurica families were higher,the values were 4.07 mm,3.82 mm and 3.71 mm,respectively.The radial growth of F.mandshurica was constrained by temperature and precipitation during the growing season.The radial growth was significantly negatively correlated with the tempera-ture in October of the previous year,positively correlated with the temperature from January to April,and negatively cor-related with the precipitation from March to April.Temperature was the primary climatic factor affecting xylem anatomi-cal features of F.mandshurica families in Xiaoxing'an Mountains.Under low temperature stress,the ring width(RW),mean vessel area(MVA),total vessel area(TVA)and theoretical hydraulic conductivity(Kh)decreased by 25.5％,38.2％,21.8％and 55.1％,compared with non-low temperature years,while vessel density(VD)increased by 64.1％.There was difference in radial growth among F.mandshurica families under low temperature stress.No.39,70 and 36 families had stronger resistance to cold,the values of resistance were greater than 1.The recovery of No.57,17 and 70 families were better,the values of recovery were higher than 1.63.The No.70 F.mandshurica family in Xiaox-ing'an Mountains had excellent growth and stronger cold resistance,which could be used as an excellent F.mandshurica family for directional cultivation.关键词
水曲柳/径向生长/木质部解剖/低温/生态弹性Key words
Fraxinus mandshurica/radial growth/wood anatomy/low temperature/ecological resilience分类
林学引用本文复制引用
陈满菊,曾凡锁,詹亚光,马荟,张晨晨,刘烨,辛颖..小兴安岭地区水曲柳家系径向生长与木质部解剖特征对低温的响应[J].森林工程,2025,41(3):471-485,15.基金项目
林木遗传育种国家重点实验室创新项目(2022A03) （2022A03）
国家重点研发计划项目(2021YFD2200303). （2021YFD2200303）
