Contrasting strategies to cope with drought conditions by two tropical forage C4 grasses

Growth of Mulato II and Napier grass under drought conditions
Growth of Mulato II and Napier grass under drought conditions

Drought severely limits forage productivity of C4 grasses across the tropics. Napier grass (Pennisetum purpureum) and Brachiaria hybrid cv. Mulato II are tropical C4 grasses used for livestock production due to their reputed resistance to drought conditions. However, there is scant information on the mechanisms used by these grasses to confront to water-limited conditions. A new study published by Cardoso et al. in AoB PLANTS provides an overview of the dynamics of growth, water uptake and water use in these two grasses. This information in combination with observations of leaf rolling scores suggested that Napier grass and Mulato fall respectively into contrasting “water spending/water saving” models of water use. As such, Napier grass might be targeted for areas with intermittent and short periods of drought, whereas Mulato II might be a better option for areas with longer drought spells.


AoB PLANTS is an open-access, online journal that publishes peer-reviewed articles on all aspects of environmental and evolutionary biology. Published by Oxford University Press, AoB PLANTS provides a fast-track pathway for publishing high-quality research, where papers are available online to anyone, anywhere free of charge. Reasons to publish in AoB PLANTS include double-blind peer review of manuscripts, rapid processing time and low open-access charges.

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