Limitações fisiológicas do milho nas condições de plantio nas regiões tropicais baixas. [PDF]
DURAES, F. O. M.
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Genetics and utilisation of apomixis for the improvment of guineagrass (Panicum maximum) Jacq.
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Herbage accumulation and tillering dynamics of ‘Zuri’ guineagrass under rotational stocking
Crop Science, 2021AbstractUnderstanding the effects of grazing management on tillering dynamics of forage grasses may help identify management practices that optimize pasture production, stability, and ultimately, persistence. The objective of this research was to evaluate the effects of two grazing frequencies (regrowth interrupted when the canopy was 70 cm tall or at ...
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Ecotypic differentiation in guineagrass (Panicum maximum Jacq.)
Agro-Ecosystems, 1979Abstract Six Brazilian populations of guineagrass ( Panicum maximum Jacq.) were studied in order to evaluate their quantitative and allozyme variation and to correlate their ecotypic differences with average monthly temperature and rainfall at the collection sites.
Jose A. Usberti, Subodh K. Jain
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Herbage responses of Tamani and Quênia guineagrasses to grazing intensity
Agronomy Journal, 2020AbstractNew forage cultivars require defoliation studies for recommending proper grazing management. Our objective was to characterize herbage accumulation (HA), plant‐part composition and nutritive value of guineagrass [Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs] rotationally stocked under two grazing intensities.
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Analysis of expressed sequence tags in apomictic guineagrass (Panicum maximum)
Journal of Plant Physiology, 2009Apomixis is an intriguing asexual mode of reproduction, because it produces maternal clones that permit vegetative reproduction through seeds. Guineagrass (Panicum maximum) has both facultative aposporous apomixis and obligate sexual modes of reproduction.
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Multivariate and multiharvesting trial for agronomic traits in the genetic resources of guineagrass
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Simple agrometeorological models for estimating Guineagrass yield in Southeast Brazil
International Journal of Biometeorology, 2013The objective of this work was to develop and evaluate agrometeorological models to simulate the production of Guineagrass. For this purpose, we used forage yield from 54 growing periods between December 2004-January 2007 and April 2010-March 2012 in irrigated and non-irrigated pastures in São Carlos, São Paulo state, Brazil (latitude 21°57'42″ S ...
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YIELD PERFORMANCE OF GUINEAGRASS HYBRIDS UNDER CUTTING MANAGEMENT
1997Developing hybrids of guineagrass (Panicum maximum Jacq.) is difficult mainly because its reproduction is by apomixis. Utilizing sexual female plants and facultative apomictic genotypes, the following crosses were developed at the USDA-ARS, Tropical Agriculture Research Station (TARS): GH-101 (Tift SPM 92 χ PI 3622); GH-102 (Tift 49 χ CI AT 604); GH ...
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Biology of Sourgrass and Its Competition with Buffelgrass and Guineagrass
Weed Science, 1977Establishment and early growth characteristics were defined for sourgrass [Trichachne insularis(L.) Nees], one of the most serious pasture weeds in Hawaii. Optimum germination of sourgrass seeds was obtained in the light at 30 C or with alternating temperatures of 20 and 30 C or 25 and 35 C.
J.Y. Pyon, A.S. Whitney, R.K. Nishimoto
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