文献类型：期刊文献

中文题名：栎树秋季叶色多样性及相关生理特性的变化

英文题名：Leaf Color Diversity and the Change of Physiological Characteristics of Quercus spp.During the Discoloration Period in Autumn

作者：安然[1] 王树凤[1] 陈益泰[1] 汪阳东[1] 傅火勇[2] 张永志[2] 施翔[1]

第一作者：安然

机构：[1]中国林业科学研究院亚热带林业研究所,浙江省林木育种技术研究重点实验室,浙江杭州311400;[2]浙江省安吉县龙山林场,浙江安吉313306

年份：2022

卷号：35

期号：2

起止页码：78-88

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2018SZ001、CAFYBB2018ZB001-3);浙江省农业(林木)新品种选育重大科技专项(2016C02056-10)。

语种：中文

中文关键词：栎树;叶色;花青素;营养元素

外文关键词：Quercus spp.;leaf color;anthocyanin;nutrients

分类号：S718.43

摘要：[目的]研究栎树叶片变色期相关生理物质含量的变化,探索其叶色多样性与生理特征变化间的内在联系。[方法]以红栎组的纳塔栎、舒玛栎、柳叶栎、月桂叶栎、樱皮栎,白栎组的琴叶栎、牛栎以及白栎等8种栎属植物4年生苗为试材,对其色差参数(L^(*)、a^(*)、b^(*))、色素、可溶性糖和营养元素含量进行测定分析。[结果]秋季栎树叶片叶色参数L^(*)值变化幅度小,较为稳定。色差参数a^(*)值、b^(*)值、叶绿素含量和类胡萝卜素含量呈下降趋势,花青素含量则逐渐上升;N、P含量在叶片变色期逐渐降低,而可溶性糖含量增加。同时a^(*)值与花青素、可溶性糖含量、C∶N和C∶P呈极显著正相关,与叶绿素、类胡萝卜素、N和P含量呈极显著负相关。通常红栎组栎树叶色较白栎组红。由于各树种各指标变化幅度不同,导致不同树种叶色差异显著,且叶色保持期不同。叶片变色后期各栎树叶色从绿色变为黄红色、深红色、鲜红色或棕色。其中纳塔栎秋季叶色最红,同时呈现红色的时间最长。[结论]红栎组栎树较早进入变色期;变色前期各指标变化幅度小,此后叶绿素和类胡萝卜素被快速分解,花青素大量合成,是影响栎树秋季叶色的关键因素;变色期叶片N和P含量逐渐下降且利用率显著提高.
[Objective]To study the change of physiological characteristics changes of Quercus spp.during the discoloration period and found the relationship between leaf color diversity and physiological changes.[Method]4-year-old seedlings of Sect.Lobatae(Quercus texana,Q.shumardii,Q.phellos,Q.laurifolia and Q.pagoda)and Sect.Quercus(Q.lyrata,Q.michauxii and Q.fabri)were used to measure chromatic aberration parameters(L^(*),a^(*),and b^(*)),pigment,soluble sugar,C,N and P contents during the leaf senescence stage.[Result]During the autumn,the leaf senescence period,the variation range of L^(*)value was small and stable.The values of a^(*)and b^(*),chlorophyll and carotenoid contents decreased whereas the anthocyanin content increased gradually.The leaf N and P contents decreased gradually in the senescing leaves,but the contents of soluble sugar in leaves increased.The a^(*)value showed significantly positive correlations with anthocyanin and soluble sugar content,C:N ratio and C:P ratio;and negative correlations with chlorophyll,carotenoid,N and P content.In general,the leaf color of Sect.Lobatae was redder than that of Sect.Quercus,while there were significant differences among species in terms of leaf color and leaf color retention period.Due to the different magnitude of variation in each index of each species,the leaf color of Quercus spp.changed from green to yellow-red,crimson,bright red or brown in the late stage of leaf discoloration.The leaf color of Q.texana was the reddest in autumn and the red leaves occurred the longest.[Conclusion]Usually,the leaf color of Sect.Lobatae will change earlier than that of Sect.Quercus.In the early stages,the variation of parameters is very small.After,the leaf color of Quercus spp.is mostly affected by chlorophyll and carotenoids break down and anthocyanins will synthesize quickly.The N and P contents will gradually decrease,and the utilization rate increase significantly.