Communications in Plant Sciences, vol 9, p. 59-65, 2019 (2019010)
Path analysis on traits associated with oat milling yield
Cezar Verdi, Vianei Rother, Ivan Ricardo Carvalho, Liamara Bahr Thurow, Rafael Nornberg, Victoria Freitas de Oliveira, Luciano Carlos da Maia and Antonio Costa de Oliveira
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Abstract: Oat is an important winter cereal used for food and feed. The industrial crop yield is an important parameter to characterize the quality of the grain and the conversion of this in processed products. Thus, this study aimed to identify the phenotypic inter-relations of cause and effect between traits associated with the industrial yield of oat. The experiment was conducted in the growing seasons of 2013 and 2014 in the experimental area of the Plant Genomics and Breeding Center, belonging to the Federal University of Pelotas. The experimental design was a randomized block, arranged in a factorial design, two (harvests) x 20 (genotypes), arranged in six replications. The oat genotypes formed different phenotypic classes for the measured traits. The industrial yield is directly associated with the test weight, grain yield and grain index. Phenotypic associations can be efficiently used in breeding programs aiming at oat indirect selection to improve industrial performance.
1. Different phenotypic classes are observed for the measured traits.
2. Milling yield is associated with the hectoliter weight, grain yield and grain index.
3. The milling yield can be improved by indirect selection.
Keywords: Avena sativa L., Industrial quality, Test weight, Grain yield, Grain index. (more…)