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首页> 外文期刊>Biomass & bioenergy >Productivity and heat-stress tolerance in Canadian poplar (Populus × canadensis Moench) clones with different ecological optimum
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Productivity and heat-stress tolerance in Canadian poplar (Populus × canadensis Moench) clones with different ecological optimum

机译：加拿大杨树（Populus×Canadensis Moench）克隆的生产率和热应激耐受性，具有不同生态最优的克隆

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摘要

Cultivation of fast growing poplar (Populus sp.) clones represents an effective means for reaching the 2020 target of the EU-28 renewable energy production. However, considering the continuous climate change, their growth can be markedly affected by summer heat stress episodes in Slovakia. Therefore, in this work two Canadian poplar (Populus × canadensis Moench) clones of different ecological optimum, 'Gigant' and 'Pannonia', were investigated in respect of productivity and heat stress tolerance. After three-year cultivation, tree height in the clone 'Gigant' was 8.9 m, breast trunk diameter 9.3 cm and trunk volume 0.021 m~3 compared to 7.9 m, 7.0 cm and 0.012 m~3 in clone 'Pannonia' (despite of relatively more stable trunk growth rate in summer). Trunks of the latter clone contained 12% bark (vs. 10% in 'Gigant'), 1.5% ash in the wood (vs. 3%) and showed significantly larger wood density (440 vs. 380 kg m~(-3)) but lower wood free energy content (14.5 vs. 16 MJ kg~(-1)). Both of clones were proved to be diploids (2x). Clone 'Pannonia' exhibited larger heat stress tolerance, as tested in leaves of different developmental stage exposed to 40 °C using chlorophyll fluorescence technique (decreasing from mature to juvenile leaves), lower specific leaf area and higher leaf carotenoid and cytokinin (particularly BAP derivatives) concentration. In spite of lower heat stress tolerance and higher ash content, clone 'Gigant' showed larger productivity than clone 'Pannonia', suggesting potential of the latter for cultivation in much more stressful conditions.
机译：快速生长杨树（杨树SP。）克隆代表了达到Eu-28可再生能源生产的2020个目标的有效手段。然而，考虑到持续的气候变化，他们的增长可以显着受到斯洛伐克夏季热压力发作的影响。因此，在这项工作中，在生产率和热应激耐受性的情况下，研究了不同生态最佳，“胶质剂”和“Pannonia”的两种加拿大杨树（杨树Canadensis Moench）克隆。经过三年的培养后，克隆'Gigant'的树高度为8.9米，乳房干线直径9.3厘米和躯干体积0.021 m〜3相比克隆'Pannonia'（尽管如此）夏季相对更稳定的躯干增长率）。后者克隆的树干含有12％的树皮（在“胶带中的5％”），木材中的1.5％灰分（比3％），并显示出明显较大的木质密度（440 Vs.380 kg m〜（3） ）但是较低的木材自由能量含量（14.5与16 mj kg〜（-1））。证明两种克隆是二倍体（2x）。克隆的普干蛋“表现出较大的热应激耐受性，如使用叶绿素荧光技术（从成熟的成熟降低到少年叶片），下小特异性叶面积和更高的叶类胡萝卜素和细胞蛋白（特别是Bap衍生物）的不同发育阶段的叶片） 专注。尽管具有较低的热胁迫耐受性和更高的灰分含量，但克隆的胶虫'表现出比克隆'Pannonia'更大的生产力，这表明在更加紧张的条件下培养后者的潜力。

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  • 来源
    《Biomass & bioenergy》 |2020年第7期|105605.1-105605.10|共10页
  • 作者

    Peter Ferus; Frantisek Hnilicka; Helena Hnilickova; Daniel Kurjak; Jaroslav Kmet; Pavol Otepka; Jozef Gubis; Michaela Havrlentova; Jiri Malbeck; Jana Konopkova;

  • 作者单位

    Mlynany Arboretum Institute of Forest Ecology SAS Vieska nad Zitavou 178 Slepcany 95152 Slovakia;

    Department of Botany and Plant Physiology Czech University of Life Sciences Kamycka 129 Praha-Suchdol 16521 Czech Republic;

    Department of Botany and Plant Physiology Czech University of Life Sciences Kamycka 129 Praha-Suchdol 16521 Czech Republic;

    Department of Integrated Forest and Landscape Protection Technical University in Zvolen Ul. T. C. Masaryka 24 96001 Zvolen Slovakia;

    Department of Integrated Forest and Landscape Protection Technical University in Zvolen Ul. T. C. Masaryka 24 96001 Zvolen Slovakia;

    European Ecocycles Society Matrai ut. 36 Gyongyos 3200 Hungary;

    Research Institute of Plant Production National Agricultural and Alimentary Centre Bratislavska cesta 122 Piestany 92168 Slovakia;

    Research Institute of Plant Production National Agricultural and Alimentary Centre Bratislavska cesta 122 Piestany 92168 Slovakia;

    Institute of Experimental Botany Czech Academy of Sciences Rozvojova 263 16502 Praha 6 - Lysolaje Czech Republic;

    Mlynany Arboretum Institute of Forest Ecology SAS Vieska nad Zitavou 178 Slepcany 95152 Slovakia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Canadian poplar (Populus × canadensis Moench) clone; Production; Free combustible energy; Heat-stress tolerance; Chlorophyll a fluorescence; Cytokinin;

    机译：加拿大杨树（杨树×Canadensis Moench）克隆;生产;自由可燃能;热应力耐受性;叶绿素荧光;cytokinin;

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