Selection and evaluation of Neonotonia wightii accessions using multivariate analysis

Authors

  • Odete Maria Aparecida Angeli Ghisi Empresa Brasileira de Pesquisa Agropecuária
  • Elizabeth Ann Veasey Instituto de Zootecnia, Divisão de Técnica Básica e Auxiliar, Seção de Estatística e Técnica Experimental, Nova Odessa, SP
  • Ivani Pozar Otsuk Instituto de Zootecnia, Divisão de Nutrição Animal e Pastagens, Seção de Agronomia de Plantas Forrageiras, Nova Odessa, SP

Keywords:

neonotonia wightii, agronomic evaluation, selection, cluster analysis

Abstract

The purpose of this work was to evaluate agronomically 44 accessions of perennial soybean (with and without mineral fertilizalion). The experiment was carried out at the Instituto de Zootecnia, Nova Odessa, SP, from October 21, 1982 to February 27, 1986, on a Red-Yellow Podzolic soil, Laras variation. The accessions were tested in plots consisting of one l0m row without replication. Twelve characters (agronomical and phenological) were evaluated. The data were analysed using multivariate methods: principal component analysis to verify the most discriminating and stable characters for a better interpretation of the results; cluster analysis using average Euclidean distance for quantitative data; Jaccard coefficient for qualitative data, and the UPGMA method (unweighted pair group method with arithmetic average) for grouping the accessions. These presented a great variability. Mineral fertilization substancially influenced dry matter and seed production and flowering concentration. Length of flowering, in general, was longer for the intermediates and shorter for the late flowering accessions. Seed production decreased from the early to the late flowering ones. It is recommended that more detailed studies should be carried out on the non-commercial accessions that stood out: NO 409, 410, 250, 2341, 2335 and 2348.

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Published

2014-01-14

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Selection and evaluation of Neonotonia wightii accessions using multivariate analysis. (2014). Bulletin of Animal Husbandry, 51(1), 77-85. http://bia.iz.sp.gov.br/index.php/bia/article/view/820

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