2009
DOI: 10.1590/s0103-84782009005000065
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Características morfológicas em plantas de cultivares de aveia como indicadoras do potencial competitivo com plantas daninhas

Abstract: IVCaracterísticas morfológicas em plantas de cultivares de aveia como indicadoras do potencial competitivo com plantas daninhas 'CFT 1', 'FAPA 5', 'FAPA 6', 'UFRGS 19', 'UPF 16', 'UPFA 20', 'UPFA 22', 'URS 21', and 'URS 22

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Cited by 8 publications
(5 citation statements)
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“…However, a high HI is not decisive in identifying the most effective management, as an appropriate GY is directly connected to the appropriate minimum total biomass expression by straw. Schaedler et al (2009), studying white oat, had the highest harvest index in the URS 21 cultivar, with 0.48, and the lowest index with UPF 16, 0.33. Seeking to define seed adjusted density to maximize straw and grain production in the cultivated white oat standard biotype, in Tables 3 and 4 the resume of the regression analysis and the equation parameters on the physiological production characters in different cultivation systems are presented.…”
Section: Resultsmentioning
confidence: 92%
“…However, a high HI is not decisive in identifying the most effective management, as an appropriate GY is directly connected to the appropriate minimum total biomass expression by straw. Schaedler et al (2009), studying white oat, had the highest harvest index in the URS 21 cultivar, with 0.48, and the lowest index with UPF 16, 0.33. Seeking to define seed adjusted density to maximize straw and grain production in the cultivated white oat standard biotype, in Tables 3 and 4 the resume of the regression analysis and the equation parameters on the physiological production characters in different cultivation systems are presented.…”
Section: Resultsmentioning
confidence: 92%
“…As respostas morfofisiológicas à redução da razão V:Ve incluem aumento de estatura e área foliar (Liu et al, 2009). O aumento na estatura permite maior formação do dossel vegetal e é causada pelo sombreamento ou a presença de plantas daninhas (Agostinetto et al, 2008;Schaedler et al, 2009). Assim, as plantas investem maior proporção de fotoassimilados no aumento da área foliar, otimizando a captação de luz (Gobbi et al, 2011).…”
Section: Resultsunclassified
“…However, under low light, plants invest a greater proportion of photoassimilates in increasing leaf area in order to optimize light capture (Gobbi et al, 2011). Changes in height due to light quality allow the formation of a canopy (Concenço et al, 2008;Schaedler, 2009), which may result in lower biomass production.…”
Section: (B) (A) (C) (D)mentioning
confidence: 99%
“…Sunlight regulates the physiological and biophysical processes of plants (Yang et al, 2013); it is vital to photosynthesis and acts as an environmental signaler, altering plant metabolism and growth (Jiao et al, 2007) and potentially influencing competition between plants (Liu et al, 2009). Low light levels can occur in rice-producing areas worldwide due to shading by the canopy (Aumonde et al, 2013), the presence of neighboring plants (Concenço et al, 2008;Schaedler et al, 2009) or cloud cover (Singh, 2000). Another related factor is the El Niño Southern Oscillation (ENSO), a large-scale phenomenon that affects the weather and climate at different locations across the world, including southern Brazil (Streck et al, 2009), the country's largest riceproducing region (SOSBAI, 2014).…”
Section: Introductionmentioning
confidence: 99%