SaulinoAllevatoTodaroEtAl2019

Référence

Saulino, L., Allevato, E., Todaro, L., Rossi, S., Bonanomi, G., Saracino, A. (2019) Comparative study of hybrid and wild black poplar genotypes in the first three-year cycle of multi-stem short-rotation coppice. Biomass and Bioenergy, 122:17-27. (Scopus )

Résumé

In short-rotation coppice, shoots grow at high density and compete for limiting resources with their neighbours. Interactions among shoots translate into individual size differences due to resource apportionment. In the present study we compared shoot dynamics of six hybrid poplars and three wild river genotypes of Populus nigra under the first three-year cycle of multi-stem short-rotation coppice. We investigated changes over time in diameter frequency distribution, mortality and biomass partitioning according to crown classes of the shoots. Unimodal shoot diameter distributions during rotation modelled by a two-parameter Weibull probability density distribution show that the values of the α scale parameter are higher in hybrid genotypes compared to wild black poplars (α ≥ 2.0 and α ≤ 2.0, respectively) in all three years. The values of the β shape parameter mostly decrease over time in hybrid genotypes and increase in wild black poplars in the narrow range from 1.42 to 2.38 and from 1.47 to 2.03, respectively. With regard to biomass partitioning among shoot crown classes, differences in size attributes are more pronounced in hybrids than native black poplar genotypes. In hybrid genotypes, 83.7% of the biomass is allocated to dominant shoots, while wild black poplars share 71.6% of the biomass in the dominant and 24.8% in the intermediate shoots. This disproportional biomass allocation among crown classes of hybrid compared to native genotypes could be related to their different origin of selection. © 2019 Elsevier Ltd

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@ARTICLE { SaulinoAllevatoTodaroEtAl2019,
    AUTHOR = { Saulino, L. and Allevato, E. and Todaro, L. and Rossi, S. and Bonanomi, G. and Saracino, A. },
    TITLE = { Comparative study of hybrid and wild black poplar genotypes in the first three-year cycle of multi-stem short-rotation coppice },
    JOURNAL = { Biomass and Bioenergy },
    YEAR = { 2019 },
    VOLUME = { 122 },
    PAGES = { 17-27 },
    NOTE = { cited By 0 },
    ABSTRACT = { In short-rotation coppice, shoots grow at high density and compete for limiting resources with their neighbours. Interactions among shoots translate into individual size differences due to resource apportionment. In the present study we compared shoot dynamics of six hybrid poplars and three wild river genotypes of Populus nigra under the first three-year cycle of multi-stem short-rotation coppice. We investigated changes over time in diameter frequency distribution, mortality and biomass partitioning according to crown classes of the shoots. Unimodal shoot diameter distributions during rotation modelled by a two-parameter Weibull probability density distribution show that the values of the α scale parameter are higher in hybrid genotypes compared to wild black poplars (α ≥ 2.0 and α ≤ 2.0, respectively) in all three years. The values of the β shape parameter mostly decrease over time in hybrid genotypes and increase in wild black poplars in the narrow range from 1.42 to 2.38 and from 1.47 to 2.03, respectively. With regard to biomass partitioning among shoot crown classes, differences in size attributes are more pronounced in hybrids than native black poplar genotypes. In hybrid genotypes, 83.7% of the biomass is allocated to dominant shoots, while wild black poplars share 71.6% of the biomass in the dominant and 24.8% in the intermediate shoots. This disproportional biomass allocation among crown classes of hybrid compared to native genotypes could be related to their different origin of selection. © 2019 Elsevier Ltd },
    AFFILIATION = { Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, Portici, Naples, 80055, Italy; School of Agricultural, Forest, Food and Environmental Science, University of Basilicata, Viale dell'Ateneo Lucano 10, Potenza, 85100, Italy; Département de Sciences Fondamentales, Université du Québec à Chicoutimi, 555 Boulevard de l'Université, Chicoutimi, QC G7H2B1, Canada; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China },
    AUTHOR_KEYWORDS = { Biomass partitioning; European black poplar; Hybrid poplar clones; Short-rotation coppice; Tree size attributes; Weibull PDF },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.biombioe.2019.01.001 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060309872&doi=10.1016%2fj.biombioe.2019.01.001&partnerID=40&md5=09c3bbd543cf93ae479826846f33d655 },
}

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