Growth and biomass allocation of the C4 grasses Brachiaria brizantha and B. humidicola under shade.
By M. B. Dias-Filho. 2000
84 citations recorded by the source corpus.
The growth and biomass allocation responses of the tropical forage grasses Brachiaria brizantha cv. Marandu and B. humidicola were compared for plants grown outdoors, in pots, in full sunlight and those shaded to 30% of full sunlight over a 30day period. The objective was to evaluate the acclimation capacity of these species to low light. Both species were able to quickly develop phenotypic adjustments in response to low light. Specific leaf area and leaf area ratio were higher for low-light plants during the entire experimental period. Low-light plants allocated significantly less biomass to root and more to leaf tissue than high-light plants. However, the biomass allocation pattern to culms was different for the two species under low light: it increased in B. brizantha, but decreased in B. humidicola, probably as a reflection of the growth habits of these species. Relative growth rate and tillering were higher in high-light plants. Leaf elongation rate was significantly increased on both species under low light; however, the difference between treatments was higher in B. brizantha. These results are discussed in relation to the pasture management implications.
Subfields: Agronomy and Crop Science, Forestry
View Paper: https://www.semanticscholar.org/paper/71fe4da874dda1b45e2540c4bee2f842d76f6997
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Citations in the corpus
- Do light and alfalfa responses to cloth and slatted shade represent those measured under an agroforestry system? (2011, background): “In other studies, there has been an indication of leaf elongation and increased leaf area in grasses under low irradiance environments (Smith 1982; Dias-Filho 2000; Lin et al. 2001; Peri et al. 2007), but that is usually followed by a decrease in nutritive value measured in available herbage energy ”
- Performance of dairy heifers in a silvopastoral system (2011, background): “morphophysiological adjustments, such as increases in specific leaf area, leaf elongation rate and the aerial biomass/root biomass relationship, which enables maintained productivity, even in conditions of moderate limited lighting (Dias-Filho, 2000; Guenni et al., 2008; Paciullo et al., 2010).”
- Morphogenesis, biomass and nutritive value of Panicum maximum under different shade levels and fertilizer nitrogen rates (2017, background): “Grass tolerance to shade depends on a plant’s ability to adapt, morphologically and physiologically, to a given irradiance level (Dias-Filho, 2000).”