Production of micro-cuttings from acorns to test the plasticity of response to contrasting soil water regimes  

作　　者：julien parelle sara belabbes fabienne tatin-froux 

机构地区：[1]UMR Chrono-Environnement 6249, Universite de Bourgogne Franche-Comte/CNRS USC INRA, 16 route de Gray, 25030 Besancon Cedex, France

出　　处：《Journal of Forestry Research》2016年第5期995-1001,共7页林业研究（英文版）

基　　金：supported by the National Centre for Scientific Research,the University of Bourgogne Franche-Comté and the Regional Council of Franche-Comté

摘　　要：We collected acorns from selected Quercus robur and Quercus petraea mother trees growing at sta- tions with different depths to the water table. We produced pairs of micro-cuttings from these single acorns. The obtained pairs of cuttings represented phenotypes of high similarity according to photosynthetic parameters. These pairs of cuttings were used to test the plasticity of response to contrasting water regimes. For each pair, one cutting was submitted to drought and the other was submitted to waterlogging. Drought response was recorded according to gas exchange traits （stomatal closure and water use effi- ciency）. The response to waterlogging was recorded according to the capacity to form hypertrophied lenticels and to maintain the CO2 assimilation rate. Intermediary phenotypes presenting both high water use efficiency and the capacity to develop hypertrophied lenticels were expected.We collected acorns from selected Quercus robur and Quercus petraea mother trees growing at sta- tions with different depths to the water table. We produced pairs of micro-cuttings from these single acorns. The obtained pairs of cuttings represented phenotypes of high similarity according to photosynthetic parameters. These pairs of cuttings were used to test the plasticity of response to contrasting water regimes. For each pair, one cutting was submitted to drought and the other was submitted to waterlogging. Drought response was recorded according to gas exchange traits （stomatal closure and water use effi- ciency）. The response to waterlogging was recorded according to the capacity to form hypertrophied lenticels and to maintain the CO2 assimilation rate. Intermediary phenotypes presenting both high water use efficiency and the capacity to develop hypertrophied lenticels were expected.

关 键 词：ACORNS Drought petraea Quercus sessiliflora Quercus robur Quercus Waterlogging 

分 类 号：S792.18[农业科学—林木遗传育种]