黄跃宁,倪妍妍,刘建锋,林永标,张玉婷,姚宁,江泽平.南移后不同种源栓皮栎幼苗光合生理性状的比较[J].林业科学研究,2019,32(5):51-57
南移后不同种源栓皮栎幼苗光合生理性状的比较
Comparison of Photosynthetic Physiological Traits of Quercus variabilis Seedlings among Various Provenances after Southward Movement
投稿时间:2019-03-22  修订日期:2019-05-21
DOI:10.13275/j.cnki.lykxyj.2019.05.007
中文关键词:  栓皮栎  幼苗  地理种源  光合荧光特性  FvCB模型
英文关键词:Quercus variabilis  seedling  geographical provenance  photosynthetic fluorescence characteristics  FvCB model
基金项目:中央级公益性科研院所基本科研业务费专项“栎类资源培育与利用关键技术研究”(CAFYBB2018ZB001-02);中国科学院退化生态系统植被恢复与管理重点实验室开放基金资助项目(DE2018022)
作者单位E-mail
黄跃宁 中国林业科学研究院林业研究所, 国家林业和草原局林木培育重点实验室, 北京 100091  
倪妍妍 中国林业科学研究院森林生态环境与保护研究所, 北京 100091  
刘建锋 中国林业科学研究院林业研究所, 国家林业和草原局林木培育重点实验室, 北京 100091 Liujf2000cn@163.com 
林永标 中国科学院华南植物园, 中国科学院退化生态系统植被恢复与管理重点实验室, 广东 广州 510650  
张玉婷 中国林业科学研究院林业研究所, 国家林业和草原局林木培育重点实验室, 北京 100091  
姚宁 中国林业科学研究院林业研究所, 国家林业和草原局林木培育重点实验室, 北京 100091  
江泽平 中国林业科学研究院森林生态环境与保护研究所, 北京 100091  
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中文摘要:
      [目的]探讨水热条件变化后不同种源栓皮栎幼苗光合生理性状的差异,为栓皮栎优良种源的引种栽培提供理论参考。[方法]收集5个地理种源(北京平谷PG、河南内乡NX、湖北秭归ZG、江西永修YX和湖南城步CB)的栓皮栎种子,选择在其自然分布南缘以南的生境(广东鹤山,HS)下进行培育,测定不同种源栓皮栎的光合生理指标。[结果]表明:低纬度CB种源栓皮栎的潜在最大净光合速率(Pmax)显著高于中高纬的ZG和PG种源(P<0.05);YX种源的表观量子效率(AQY)最高,而ZG种源的最低;NX和CB种源的叶绿素相对含量(SPAD)显著高于YX种源。PSⅡ原初光能转换效率(Fv/Fm)和PSⅡ潜在活性(Fv/F0)在各种源间均差异不显著,表明各种源栓皮栎均能较好地适应水热丰沛的新生境。同时,各种源栓皮栎在暗呼吸速率(Rd)、光饱和点(LSP)、光补偿点(LCP)、Rubisco酶最大羧化速率(Vcmax)、最大电子传递速率(Jmax)、光呼吸速率(Rp)、生长参数以及叶绿素荧光参数如电子传递速率(ETR)、光化学淬灭系数(qP)和非光化学淬灭系数(NPQ)等均差异不显著。[结论]各种源栓皮栎光合生理性状的异同与其自身遗传因素和较强的生态适应性有关。
英文摘要:
      [Objective] To explore the differences in photosynthetic physiological traits among Quercus variabilis provenances responding to alternative habitat, and to provide reference for introduction and cultivation of excellent germplasm of Q. variabilis.[Method] Five Q. variabilis provenances coming from Pinggu of Beijing, Neixiang of He'nan Province, Zigui of Hubei Province, Yongxiu of Jiangxi Province and Chengbu of Hu'nan Province, were collected and cultured in the region beyond the species' southmost range (Heshan of Guangdong Province) to determine the photosynthetic physiological indices of different provenances.[Result] The potential maximum net photosynthetic rate of Chengbu provenance was significantly higher than the provenances at mid-high latitudes (Zigui and Pinggu) (P<0.05). Yongxiu provenance showed higher apparent quantum efficiency, while Zigui provenance showed the lowest. The relative chlorophyll content of Neixiang and Chengbu provenances was significantly higher than that of Yongxiu provenance. Primary light energy conversion efficiency of PSII (Fv/Fm) and potential activity of PSII (Fv/F0) differed slightly among provenances, indicating that all these Q. variabilis provenances did not sustain obvious stresses and could adapt to the new habitat. Moreover, dark respiration rate, light saturation point, light compensation point, Rubisco enzyme maximum carboxylation rate, maximum electron transfer rate, photorespiration rate, as well as growth parameters and chlorophyll fluorescence parameters such as electron transfer rate, photochemistry quenching coefficient and non-photochemistry quenching coefficient were comparable.[Conclusion] The similarities and differences of photosynthetic physiological traits of Q. variabilis from different provenances are related to their own genetic factors and strong environmental adaptability to new habitat.
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