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Growth potential of different species and genotypes for biomass production in short rotation in Mediterranean environments

机译：在地中海环境中短轮作过程中不同物种和基因型在生物量生产方面的增长潜力

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The sustainable production of lignocellulosic biomass in Short Rotation Coppice (SRC) in the context of bioeconomic development in Europe demands an ever greater understanding of the plant material. Different species and, in some cases, different genotypes (Populus deltoides 'Baldo', Populus x canadensis: 'Orion', 'Oudenberg', 'Ballottino' and 'I-214'; Robinia pseudoacacia 'Nyirsegi', Salix matsudana x Salix spp. 'Levante' and Platanus x hispanica 'Girona') were tested at four contrasting Mediterranean locations to determine the biomass yield after three years. Besides production, genotypic stability is a key factor in furthering our understanding of the plant material, with important implications for the management of plantations as well as for breeding. To study this factor, several stability models were compared (additive mixed model, Shukla's stability variance model, Finlay-Wilkinson and Eberhart-Russell models) and differences in the response capacity of the material were evaluated in the different environments. This evaluation of genotypic stability, based on the measurement of variances, was complemented by an analysis of the mean genotypic value and the variability in genotype productivity. Intrinsic water use efficiency was also evaluated as it is an important trait of plant material destined for use in Mediterranean conditions. S. matsudana x Salix spp. 'Levante' exhibited the highest production and showed an intermediate reactivity (stability) as well as high intrinsic water use efficiency under the conditions in which it was tested. P. x canadensis 'Orion' also displayed a good overall performance and was highly sensitive to improving environmental conditions. Conversely, R. pseudoacacia and P. x hispanica presented yields well below the average as well as low responsiveness to improved environmental conditions. Our findings will contribute to a better understanding of plant material, enabling improved recommendations for plantations the Mediterranean area, including more precise large scale predictions. Furthermore, the information provided will be of particular value in future breeding programs. Published by Elsevier B.V.
机译：在欧洲生物经济发展的背景下，短旋转小灌木林（SRC）中木质纤维素生物质的可持续生产需要对植物材料有越来越多的了解。不同物种，在某些情况下还存在不同的基因型（Populus deltoides'Baldo'，Populus x canadensis：'Orion'，'Oudenberg'，'Ballottino'和'I-214'; Robinia pseudoacacia'Nyirsegi'，Salix matsudana x Salix spp在三个不同的地中海位置测试了“ Levante”和Platanus x hispanica（“ Girona”），以确定三年后的生物量产量。除生产外，基因型稳定性是加深我们对植物材料了解的关键因素，对人工林管理和育种具有重要意义。为了研究该因素，比较了几种稳定性模型（加性混合模型，Shukla的稳定性方差模型，Finlay-Wilkinson和Eberhart-Russell模型），并评估了材料在不同环境下的响应能力差异。对基因型稳定性的评估基于方差的测量，并通过对平均基因型值和基因型生产力变异性的分析进行补充。还对本征水利用效率进行了评估，因为它是注定要在地中海条件下使用的植物材料的重要特征。 S.matsudana x Salix spp。 “ Levante”展示了最高的产量，并且在测试条件下表现出中等的反应性（稳定性）以及高的内在用水效率。加拿大假单胞菌“猎户座”也表现出良好的整体性能，并且对改善环境条件高度敏感。相反，假阿拉伯树假单胞菌和西班牙种假单胞菌的产量远低于平均水平，并且对改善的环境条件的响应能力很低。我们的发现将有助于更好地理解植物材料，从而为地中海地区的人工林提供更好的建议，包括更精确的大规模预测。此外，所提供的信息在未来的育种计划中将具有特殊价值。由Elsevier B.V.发布

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