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Canonical correlations in elephant grass for energy purposes

机译:大象草中能量相关的典范相关

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Elephant grass has the potential to be used as a source for energy production. Besides dry matter yield, other characteristics related to biomass quality are important. The canonic correlation analysis is a multivariate statistical procedure that allows for discovering characteristic associations among groups. The objective of this study was to evaluate the canonic correlation existing between the groups of agronomic traits and biomass traits in elephant-grass genotypes aiming to identify possible associations between the groups of variables in order to use this information in breeding programs of elephant grass for energy. The experiment was conducted at Colégio Estadual Agrícola Ant?nio Sarlo, located in Campos dos Goytacazes, RJ, Brazil. The evaluation cuts were made in June 2009 and February 2011; the first and third evaluation cuts, respectively. In the first cut, the following morpho-agronomic traits were evaluated: dry matter yield, percentage of dry matter, number of tillers, plant height, stem diameter, percentages of ash, cellulose, lignin, acid detergent fiber and crude protein and calorific value. In the third cut, in addition to the morpho-agronomic traits assessed in the first cut, the leaf-blade width and percentages of ash, cellulose, lignin, acid detergent fiber and neutral detergent fiber were also evaluated. The experimental design was of randomized blocks with 40 genotypes. Variance analysis and canonic correlation were performed between the morpho-agronomic and biomass-quality traits for the cuts isolated. A positive correlation was found between the percentage of dry matter and the fiber content and the plant height and number of tillers and the percentage of crude protein.
机译:象草有潜力被用作能源生产的来源。除干物质产量外,与生物质质量有关的其他特征也很重要。典型相关分析是一个多元统计过程,可用于发现组之间的特征关联。这项研究的目的是评估象草基因型中农艺性状和生物量性状之间存在的典型相关性,旨在识别变量组之间的可能关联,以便在大象草的繁殖计划中利用此信息获取能量。 。该实验是在巴西RJ Campos dos Goytacazes的ColégioEstadualAgrícolaAnt?nio Sarlo进行的。分别在2009年6月和2011年2月进行了评估削减;第一和第三次评估削减。在第一次采摘中,评估了以下形态农艺性状:干物质产量,干物质百分比,分number数,植物高度,茎直径,灰分,纤维素,木质素,酸性洗涤剂纤维和粗蛋白的百分比以及发热量。在第三次切割中,除了第一次切割中评估的形态农艺性状外,还评估了叶片宽度和灰分,纤维素,木质素,酸性洗涤剂纤维和中性洗涤剂纤维的百分比。实验设计是具有40个基因型的随机区组。对分离出的切块进行形态农艺性状和生物量品质性状之间的方差分析和典型相关性。干物质和纤维含量的百分比,植物高度,分till数和粗蛋白的百分比之间呈正相关。

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