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首页> 外文期刊>Genetic Resources and Crop Evolution >Intra- and interspecific genetic divergence in Macroptilium (Benth.) Urb.: a forage option for Brazilian semiarid
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Intra- and interspecific genetic divergence in Macroptilium (Benth.) Urb.: a forage option for Brazilian semiarid

机译：大麦粒子（Benth。）URB中的血小杂性和三分特异性遗传分歧：巴西半干旱的牧草选项

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The objective of this study was to characterize and quantify the genetic diversity within and between species of the genus Macroptilium with potential in animal feed, through morpho-agronomic descriptors. Sixty-four accessions of three species were used. The experimental design was randomized block design with three replications and five plants per plot. Eighteen qualitative and six quantitative morphological descriptors were used in addition to six agronomic descriptors. Quantitative data were submitted to analysis of variance and means were compared by Scott-Knott test, at 5% significance. For the divergence analyzes all the descriptors were grouped based on the Gower algorithm. The dendrogram was obtained by the UPGMA hierarchical grouping method and the relative importance of the characters was calculated for the divergence. There was significant effect for most quantitative traits and high variability for both between and within the studied species. Seven groups were formed which were grouped mainly in relation to the species. Groups IV, VI and VIII formed by accessions of M. atropurpureum (Sesse and Moc. ex DC.) Urb. have characteristics of interest for animal feeding. CTM-S04 and CTM-S07, not taxonomically classified, were allocated to these groups. The accessions that presented the greatest potential for animal production were CTM-A16 and CTM-M8, because they presented high dry matter production and high leaf:stem ratio. These accessions were superior to the cultivar Siratro (CTM-A27) with respect to these descriptors. These results indicate that the genotypes showed variability between and within the species which make possible their use in programs of selection and breeding for animal feed.
机译：本研究的目的是通过Morpho-Agroomic描述符在动物饲料中具有潜力的遗传多样性和量化动物饲料中的遗传多样性。使用了三十四种种类。实验设计是随机嵌段设计，具有三种复制和每种植物。除了六个农艺描述符之外，还使用了十八定性和六种定量的形态学描述符。将定量数据提交给方差分析，并且通过Scott-knott试验进行了比较了5％的意义。对于分歧，分析所有描述符基于Gower算法进行分组。通过UPGMA分层分组方法获得树形图，并计算出分歧的字符的相对重要性。对于大多数定量性状和研究的物种之间的大多数定量性状和高变异性产生显着效果。形成七组，主要与物种组成。通过探讨M. Atropurpureum（Sesse和Moc.EX DC。）URB组群组，VI和VIII组。具有兴趣的特征。 CTM-S04和CTM-S07，而不是分类学分类，分配给这些组。呈现出最大的动物产量潜力的潜力是CTM-A16和CTM-M8，因为它们呈现出高干物质生产和高叶：茎比。这些含义和这些描述符优于品种SIRATRO（CTM-A27）。这些结果表明，基因型在物种之间显示出可变性，这使得可以在用于动物饲料的选择和育种方案中使用。

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