Survival strategies of <i>Centrosema molle</i> and <i>C. macrocarpum</i> in response to drought

Guenni, Orlando; Romero, Eva Juana Rodríguez; Guedez, Y.; Macias, Mercedes Pérez; Infante, Diógenes

doi:10.17138/tgft(5)1-18

Cited by 5 publications

(7 citation statements)

References 9 publications

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“…A decrease in the number of tillers in selected shaded Benggala grass cultivars was also reported by [13] and [14]. Shade changes the intensity and quality of radiation in plants, and affects the potential number of tillers [15].…”

Section: Resultssupporting

confidence: 57%

Productivity of Benggala grass (Panicum maximum) at different ages of oil palm

Fanindi¹,

Sajimin²,

Sutedi³

et al. 2022

E3S Web Conf.

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The study aimed to observe the cultivars of Benggala grass grown at different ages of oil palms. The research was conducted at the location of oil palm plantations at the Sei Putih, Deli Serdang, North Sumatra. The study used a Factorial Completely Randomized Block Design, using 3 replications, the first treatment was 2 oil palm planting ages, namely the age of fewer than 5 years and more than 5 years plus control (open space), while the second treatment was 5 cultivars of Benggala grass consisting of the Hamil, Riversdale, Natsuyutaka, Gatton and Petrie. The observed variables were morphological and reproductive characters. The results showed that the fresh and dry weight of the Benggala grass cultivars decreased at the age of oil palms less or more than 5 years when compared to the control (P > 0.05). Hamil and Riversdale cultivars had better yield than other cultivars (P > 0.05). The agronomic and reproductive characteristics of Benggala grass planted in the shade of oil palm showed a decrease when compared to open land. The decrease in Benggala grass production in shade indicates the need to assemble Benggala grass cultivars in oil palm shade.

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Section: Resultssupporting

confidence: 57%

Productivity of Benggala grass (Panicum maximum) at different ages of oil palm

Fanindi¹,

Sajimin²,

Sutedi³

et al. 2022

E3S Web Conf.

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“…Therefore, when selecting herbage species for silvopastures, the potential beneficial effects of complementarity in species mixtures to ameliorate contrasting effects of stressing factors (Nicodemo et al., ) should also be further assessed in subsequent studies. In the case of the Centrosema genotypes tested in this study, with contrasting acclimation strategies to shade and seasonal drought (Guenni et al., ), they may be combined with medium shade‐tolerant C 4 grasses like Brachiaria decumbens (Gómez et al., ) and Panicum maximum (Paciullo et al., ) to improve herbage quality and persistence of understory pastures in silvopastoral systems.…”

Section: Discussionmentioning

confidence: 99%

“…The study was conducted during the period July 26, 2011, to November 24, 2011, at the experimental field of the Agronomy Faculty of Universidad Central de Venezuela (UCV), located in Maracay, north‐central Venezuela (10°16′N, 67°36′W; 459 m a.s.l.). Soil characteristics and local weather have been described previously (Guenni, Romero, Guédez, Macías, & Infante, ). Briefly, the soil at the experimental site is a Mollisol, with a topsoil consisting of a loam to silty‐loam texture at 0‐0.05 m depth, and a loam to sandy‐loam texture at 0.05–0.2 m depth.…”

Section: Methodsmentioning

confidence: 99%

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Influence of low light intensity on growth and biomass allocation, leaf photosynthesis and canopy radiation interception and use in two forage species of Centrosema (DC.) Benth.

Guenni

Romero

Guedez

et al. 2018

Grass and Forage Science

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Sustainable silvopastoral systems rely on the capacity of forage species to withstand shade, competition for soil resources and grazing. On a field‐plot experiment, we studied the effects of artificial shade on the performance of two tropical forage legumes: Centrosema molle (CIAT 15160) and C. macrocarpum (CIAT 5713). Acclimation to shade in these two species was investigated at individual leaf and whole canopies, to explain differences in the efficiency of radiation interception and use, and thus forage yield. Under 30% sunlight, midday leaf net photosynthesis (A) was reduced by 32%–44%, although instantaneous light use efficiency increased up to 44%–140%. Almost 50% increase in leaf specific area was accompanied by 61% in total chlorophyll content. From analysis of the light‐response curves, net photosynthesis at light saturation was only reduced (by 36%) in C. macrocarpum. Efficiency of chloroplast photosystem II (PSII) was unaffected by shade. Canopy structure for light interception was not modified by shade, although conversion into biomass and final yield were significantly reduced (40%–43%) in C. macrocarpum. Results are discussed in terms of factors affecting potential acclimation to shade and the agronomic implications of using both forage legumes in mixed pastures under tree canopies.

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“…Centrosema molle and Catasetum macrocarpum are species belonging to a genus (Centrosema) with good adaptability to water restriction conditions. However, one study showed that C. macrocarpum was able to tolerate more severe water deficit conditions due to a better physiology mechanism to prevent water loss (GUENNI et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.

et al. 2021

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Stress caused by soil water deficit has been one of the main factors that inhibit plant growth. The knowledge of the factors related to the behavior of weed species under water stress conditions can contribute to the elaboration of effective control strategies. Two experiments were carried out to evaluate the effects of the degree and duration of water deficit on physiological and growth indicators of two weed species (Bidens pilosa L. and Bidens subalternans DC.). The stress degree was simulated by four soil moisture: 100, 75, 50, 25% of total soil capacity. The water deficit duration was evaluated by five intervals of water supply: 0, 1, 2, 3, 4, 5, and 6 days. The experiments were carried out in a randomized complete block design with six replicates. The evaluated variables were: the photosynthetic rate (A; μmol CO2 m-2), stomatal conductance (gs; μmol H2O m-2 s-1), transpiration (E; mmol H2O m-2 s-1), number of leaves per plant, and dry matter of the roots, stems, leaves, and total. The results showed that the species of B. pilosa and B. subalternans tolerate low water availability conditions. Low stomatal opening and loss of leaves are mechanisms that ensure the survival of Bidens plants to the water deficit. However, water stress close to 25% of field capacity caused the death of species. The B. subalternans had higher sensitivity to the water deficit, showing a lower dry matter of leaf, stem, and root than B. pilosa.

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Survival strategies of Centrosema molle and C. macrocarpum in response to drought

Cited by 5 publications

References 9 publications

Productivity of Benggala grass (Panicum maximum) at different ages of oil palm

Productivity of Benggala grass (Panicum maximum) at different ages of oil palm

Influence of low light intensity on growth and biomass allocation, leaf photosynthesis and canopy radiation interception and use in two forage species of Centrosema (DC.) Benth.

WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.

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