NDLI: Responses of Megathyrsus maximus accessions under shaded conditions

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Responses of Megathyrsus maximus accessions under shaded conditions

Content Provider	Consultative Group on International Agricultural Research (CGIAR)
Author	Mayorga, Mildred Cardoso, Juan Andrés
Description	Megathyrsus maximus is a species widely used as forage in livestock systems due to its high yield, good nutritional quality, and easy propagation. Knowing the response of the genetic diversity of the species to growth under shade is important to determine its potential use in silvopastoral systems, which are a sustainable alternative to mitigate the negative impacts of forage production in monoculture systems on soil health, animal welfare and the environment. To evaluate the response of M. maximus genotypes to shade conditions, 33 genotypes were planted in two conditions, without shade and with 75% shade. The response was evaluated in gas exchange, chlorophyll fluorescence, SPAD index, stem length, biomass partitioning, leaf area, number of leaves and specific leaf area. Under shade conditions, plants showed lower stomatal conductance, lower transpiration, higher photochemical efficiency of PSII operation, higher leaf area, lower number of leaves, lower root: shoot ratio, higher specific leaf area, higher SPAD index and higher stem length. The genotypes that showed the greatest phenotypic plasticity to adapt to the shade condition were CIAT16021, CIAT6299, CIAT6868 and CIAT16060.
Sponsorship	Red de Forrajes - AGROSAVIA CGIAR Trust Fund
Related Links	https://cgspace.cgiar.org/items/7aeb81fa-8b59-418b-b1b5-08ea16c3d58d
File Format	PDF
Language	English
Publisher	International Center for Tropical Agriculture
Publisher Place	Cali (Colombia)
Access Restriction	Open
Rights License	CC-BY-4.0
Subject Keyword	Biomass Forage Phenotypes Plant Genetic Resources Panicum Maximum Shade Climate Change Adaptation Livestock Tropical Forages
Content Type	Text
Resource Type	Report
Subject	Agronomy and Crop Science Food Science Plant Science

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