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Effects of several establishment modes of Miscanthus × giganteus and Miscanthus sinensis on yields and yield trends
Global Change Biology Bioenergy ( IF 5.9 ) Pub Date : 2020-05-18 , DOI: 10.1111/gcbb.12692 Malick S. Ouattara 1 , Anabelle Laurent 1 , Corentin Barbu 1 , Magali Berthou 2 , Elsa Borujerdi 3 , Arnaud Butier 1 , Pierre Malvoisin 4 , Dominique Romelot 5 , Chantal Loyce 1
Global Change Biology Bioenergy ( IF 5.9 ) Pub Date : 2020-05-18 , DOI: 10.1111/gcbb.12692 Malick S. Ouattara 1 , Anabelle Laurent 1 , Corentin Barbu 1 , Magali Berthou 2 , Elsa Borujerdi 3 , Arnaud Butier 1 , Pierre Malvoisin 4 , Dominique Romelot 5 , Chantal Loyce 1
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Miscanthus is a C4 perennial grass originating from East Asia, the yields of which progressively increase in the first years of growth. Several species for bioenergy have been studied since the mid‐1980s in Europe, in particular (Miscanthus × giganteus [M. × giganteus]), due to its high yields. M. × giganteus is mainly cultivated in France and established from rhizomes. Our study aimed to assess, in field conditions, alternative establishment methods combined with an alternative species, Miscanthus sinensis (M. sinensis). We set up a multi‐environment experimental network. On each trial, we tested two treatments with M. × giganteus, established from rhizomes (G_r‐sd) and from plantlets obtained from rhizomes (G_p‐sd), and two treatments with M. sinensis seedlings transplanted in single (S_p‐sd) and double density (S_p‐dd). ANOVA was performed to compare establishment and regrowth rates across treatments, as well as yields across treatments and site‐years. A logistic model was used to describe yield trends and to compare the maximum yield reached and the rate of yield increase of both species. Results showed that miscanthus establishment from plantlets resulted in higher establishment (between 87% and 92%) and regrowth (between 91% and 94%) rates compared to establishment from rhizomes. Treatments with M. × giganteus obtained higher average yields across site‐years than those with M. sinensis, but more variable yields across site‐years. We showed a strong species effect on yields, yield components (shoot weight, shoot density and shoot number per plant) and light interception (through leaf area index). Lastly, to use M. sinensis established from transplanted plantlets as an alternative to M. × giganteus, research would be required on the breeding of M. sinensis sterile seeds to avoid risks of invasiveness.
中文翻译：
芒芒和芒芒的几种建立模式对产量和产量趋势的影响。
芒草是起源于东亚的C4多年生草，在生长的头几年其产量逐渐增加。自1980年代中期以来，欧洲已经研究了几种生物能源物种，特别是由于其高产而引起的（Miscanthus×giganteus [ M.×giganteus ]）。M.×giganteus主要在法国种植，由根茎建立。我们的研究旨在评估，在现场条件下，替代方法，建立与替代品种，结合芒（M.冬虫夏草）。我们建立了一个多环境的实验网络。在每个试验中，我们测试了M.×giganteus的两种治疗方法根茎（G_r‐sd）和根茎（G_p‐sd）的小植株，以及用单密度（S_p‐sd）和双密度（S_p‐dd）移植的中华按蚊幼苗的两种处理方法。进行方差分析以比较不同处理的建立率和再生率，以及不同处理和站点年的产量。使用逻辑模型描述产量趋势，比较两个品种的最大产量和产量增加率。结果表明，与根茎植物相比，由小苗建立的桔梗导致较高的建立（介于87％和92％之间）和再生长（介于91％和94％之间）。与硕果累累的M.×giganteus相比，整年的平均产量更高。，但跨站点年份的可变收益更高。我们对产量，产量成分（单株重量，枝条密度和枝条数）和轻度拦截（通过叶面积指数）表现出强烈的物种效应。最后，要使用从移植苗中建立的中华按蚊来代替巨型按蚊，需要对中华按蚊无菌种子的育种进行研究，以免发生侵袭风险。
更新日期：2020-05-18
中文翻译：
芒芒和芒芒的几种建立模式对产量和产量趋势的影响。
芒草是起源于东亚的C4多年生草，在生长的头几年其产量逐渐增加。自1980年代中期以来，欧洲已经研究了几种生物能源物种，特别是由于其高产而引起的（Miscanthus×giganteus [ M.×giganteus ]）。M.×giganteus主要在法国种植，由根茎建立。我们的研究旨在评估，在现场条件下，替代方法，建立与替代品种，结合芒（M.冬虫夏草）。我们建立了一个多环境的实验网络。在每个试验中，我们测试了M.×giganteus的两种治疗方法根茎（G_r‐sd）和根茎（G_p‐sd）的小植株，以及用单密度（S_p‐sd）和双密度（S_p‐dd）移植的中华按蚊幼苗的两种处理方法。进行方差分析以比较不同处理的建立率和再生率，以及不同处理和站点年的产量。使用逻辑模型描述产量趋势，比较两个品种的最大产量和产量增加率。结果表明，与根茎植物相比，由小苗建立的桔梗导致较高的建立（介于87％和92％之间）和再生长（介于91％和94％之间）。与硕果累累的M.×giganteus相比，整年的平均产量更高。，但跨站点年份的可变收益更高。我们对产量，产量成分（单株重量，枝条密度和枝条数）和轻度拦截（通过叶面积指数）表现出强烈的物种效应。最后，要使用从移植苗中建立的中华按蚊来代替巨型按蚊，需要对中华按蚊无菌种子的育种进行研究，以免发生侵袭风险。
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