文献类型：期刊文献

中文题名：不同地理种源栓皮栎幼苗生长与物质分配的变化趋势

英文题名：The Trends in Growth and Substance Allocation in Quercus variabilis Seedlings from Five Provenances

作者：倪妍妍[1] 胡军[2] 刘建锋[1] 肖以华[3] 薛泽敏[1] 张玉婷[1] 郭志锋[4] 李雨[5]

第一作者：倪妍妍

机构：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091;[2]南昌市林业科学研究所,南昌330004;[3]中国林业科学研究院热带林业研究所,广州510520;[4]广东鹤山林业科学研究所,广东鹤山529725;[5]牛山国家森林公园,山东肥城271608

年份：2017

卷号：37

期号：3

起止页码：534-540

中文期刊名：西北植物学报

外文期刊名：Acta Botanica Boreali-Occidentalia Sinica

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金(41371075)

语种：中文

中文关键词：栓皮栎;纬度;相对生长速率;非结构性碳水化合物;养分

外文关键词：Quercus variabilis;transplant;relative growth rate;non-structural carbohydrates;nitrogen and phosphorus content

分类号：Q945.79;S718

摘要：该研究通过收集栓皮栎5个地理种源(北京平谷、河南内乡、江西永修、湖北秭归和湖南城步)种子并在栓皮栎自然分布南界以南(广东鹤山)进行培育,考察自然增温对不同地理种源栓皮栎当年生幼苗的生长性状、非结构性碳水化合物(NSC)的积累以及迁移和养分分配的影响,探讨在未来气候变暖情景下不同地理种源树木在生长与物质分配方面是否存在某种地理趋势。结果表明:(1)栓皮栎全株NSC浓度随种源地纬度增加而呈显著上升趋势,且该趋势以叶片NSC浓度(特别是可溶性糖浓度)所主导;不同器官间,叶片可溶性糖和根系淀粉浓度均随种源地纬度增加而增加,而根系可溶性糖浓度则相反;茎NSC及其组分无明显地理趋势。(2)在养分方面,栓皮栎不同器官N浓度及叶片P浓度均随种源地纬度的增加而增加,叶片氮磷比则随种源地纬度增加而显著下降;除叶片外,不同器官的N利用效率和P利用效率均随种源地纬度的增加而呈现微弱下降趋势。(3)栓皮栎幼苗的相对生长速率随种源地纬度增加而呈显著下降趋势,且与全株可利用碳库(主要指NSC)呈极显著负相关关系。结合已有研究,初步认为栓皮栎幼苗生长及物质分配的地理格局主要受遗传因素所控制。
To explore whether there would be some geographical trends in plant physiological response to undergoing climate warming,we conducted,using space-for-time substitution,a transplant experiment for1year-old seedlings of five Quercus variabilis provenances（Pinggu,Beijing;Neixiang,Henan;Yongxiu,Jiangxi;Zigui;Hubei and Chengbu,Hunan）in the trial site（Heshan,Guangdong）which is more southern beyond these provenances＇ natural edge.The results showed that：（1）the pooled non-structural carbohydrates concentrations（NSCs）increased with increasing latitude（origins＇ ）and this trend was dominated by leaf NSCs,especially by leaf sugar concentrations.Leaf sugar and root starch increased,but root sugar decreased with the increase of latitude,and no obvious geographical trends were found in shoot NSCs.（2）The nitrogen concentration in various tissues,along with leaf P,increased with an increase of latitude,but inverse for the ratio of N to P.The nutrient use efficiency（NUE,expressed as C∶N and C∶P）in tissues all exhibited a weakly decreasing trend with latitude with an exception of leaf NUE.（3）The relative growth rate of Q.variabilis declined with increasing latitude,and negatively correlated with available carbon pool（referred to NSC）according to the results of partial analysis.To sum up,our results revealed that,to some extent,the strategy of growth and substance allocation for oak seedling among different origins was dominated by the genetic factors.