Antony Cristhian Gonzales-Alvarado

Universidad Nacional de Ucayali

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Jorge Manuel Revilla-Chávez

Instituto de Investigaciones de la Amazonía Peruana

Jean Carlos Cardoso

Universidade Federal de São Carlos

Jorge Arturo Mori-Vásquez

Universidad Nacional de Ucayali

Alexandre Magno Sebbenn

Instituto Florestal

Lyanna Hellen Sáenz-Ramírez

Universidade Estadual Paulista (Unesp)

G. A. Fiorentini Aguirre

York University

Mao Augusto Herrera-Saavedra

Universidad Nacional de Ucayali

Jorge Garate-Quispe

Amazon National University of Madre de Dios

Nadia Masaya Panduro Tenazoa

Universidad Nacional Intercultural de la Amazonía

Diego Gonzalo García‐Soria

Instituto de Investigaciones de la Amazonía Peruana

Cooperative Institutions

Universidade Estadual Paulista (Unesp)

Instituto de Investigaciones de la Amazonía Peruana

Amazon National University of Madre de Dios

Universidad Nacional de Ucayali

Universidad Nacional Intercultural de la Amazonía

Universidad Nacional Agraria La Molina

Universidade de São Paulo

Universidade Federal do ABC

Instituto Nacional de Innovación Agraria

York University

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Soil amendments influence early plant survival and growth in reclamation of severely degraded lands by gold mining in the Peruvian Amazon

Journal of Degraded and Mining Lands Management (2024)

Marx Herrera-Machaca Carlos Ancco-Mamani G. A. Fiorentini Aguirre Antony Cristhian Gonzales-Alvarado Jorge Garate-Quispe

Gold mining has been causing the most severe impacts on the soils of the Peruvian Amazon. It has created challenges for their recovery. In this context, soil amendments could play a crucial role in plant establishment in post-mining soils. The study aimed to analyze the effects of two amendments on the early plant survival and growth of seven species in the reclamation of severely degraded lands by gold mining in the Southeastern Peruvian Amazon. The study was based on a completely randomized block design, including 2-amendment treatments (T1: sawdust + island guano manure and T2: T1 + organic soil + hydrogel) and a control. The plant survivorship, height growth, diameter growth, and biomass accumulation were measured. This study found that amendments may be effective at increasing survivorship and plant growth in degraded lands by gold mining in the Peruvian Amazon. The amendments increased the survival, diameter, height, and biomass of most plant species in the study. In general, survivorship and plant growth in T2 were high compared to T1. At the end of the experiment, the highest survivorship was for an Indigofera suffruticosa and Crotalaria pallida (>80%). The diameter growth was higher in T2 than in T1. The species growing fastest in diameter (>1.5 cm) were Crotalaria cajanifolia, C. pallida and Ochroma pyramidale. Soil amendments provided similar effects on height for most species except for I. suffruticosa. Therefore, C. pallida, I. suffruticosa, C. cajanifolia and O. pyramidale are key species to be considered in reforestation and/or restoration initiatives, due to its potential to acclimate and establish itself in severely degraded areas.

Afforestation

10.15243/jdmlm.2024.114.6277

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Allometric models of biomass and essential oils of Aniba rosaeodora Ducke in a tropical middle terrace soil forest of Masisea, Ucayali, Peru

Trees Forests and People (2024)

Jorge Manuel Revilla-Chávez Lyanna Hellen Sáenz-Ramírez Antony Cristhian Gonzales-Alvarado Diego Gonzalo García‐Soria Alexandre Magno Sebbenn

In this study we developed an allometric model to predict the total biomass of the tropical tree of economic value Aniba rosaeodora to manage the sustainable use of natural populations through the use of branches and leaves, in the same way that allows us to evaluate the potential for its domestication and develop plantations. For this, 15 trees were sampled with an average diameter at breast height (DBH) of 9 cm (σ= 7.5 cm, CV= 44%), height (Th) of 17.6 m (σ= 5.5 m, CV= 31%), an average total biomass of 277.7 kg (σ= 203.9 kg, CV= 73%), resulting in an average of 4.5 l of essential oil (σ= 3.3 l, CV= 75%), and with an oil yield of 1.51% (σ= 0.34%, CV= 22.3%). Thus, 29 allometric models were selected to estimate biomass of the stem (Cb), biomass of green branches (Pb), biomass of secondary branches (Sb), leaf biomass (Lb), total tree biomass (Tb) and essential oil, from variables of easy measurement (diameter) and strong correlation (Spearman's Rho 0.63-0.99; P< 0.05). From the tests, the models with the best correlation coefficients, R2 and R2aj were selected to estimate the biomass and essential oil content of each tree. Thus, the equations whose predictor variable is the D50 was the best fit, where Tb=(-1.73388+0.835102D50)2, ρ= 0.96; R2aj= 0.962 and Oil=exp(-6.4554+2.54862ln(D50)), ρ= 0.82; R2aj= 0.930, but by an indirect method using total tree biomass (Tb) a better fit can be obtained for essential oil, Oil=1/(-0.0793641+82.2948/Tb), ρ= 0.84; R2aj= 0.998.

Tree Allometry

Allometry

10.1016/j.tfp.2024.100594

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INFLUENCIA DE LA DESINFECCIÓN, MEDIOS DE CULTIVO Y FITOHORMONAS EN EL DESARROLLO MORFOGÉNICO IN VITRO DE GERMOPLASMA DE Guazuma crinita Mart.

Folia Amazónica (2022)

Antony Cristhian Gonzales-Alvarado Jorge Arturo Mori-Vásquez Lady Laura Tuisima Coral Jorge Manuel Revilla-Chávez

El presente estudio, tuvo como objetivo determinar la influencia de procesos de desinfección, medio de cultivo y fitohormonas en el desarrollo morfogénico In vitro de explantes obtenidas a partir de semilla biológica de la especie Guazuma crinita Mart (Bolaina), el mismo que se realizó en el laboratorio de cultivo de tejidos y meristemas, de la Universidad Nacional de Ucayali. Para ello se desinfectaron las semillas con hipoclorito de sodio al 2%, por un espacio de 0, 5, 10, 15 y 20 minutos (T1, T2, T3, T4, T5). Para promover la germinación se utilizaron medios de cultivo y combinaciones de Fitogel, Fitogel + Sacarosa, Fitogel + Sacarosa + Murashige and Skoog (MS) y Fitogel + Sacarosa + ½ MS (M1, M2, M3, M4); y para la morfogénica se aplicaron cinco tratamientos de concentración de auxinas y citoquininas homogenizadas (AC1, AC2, AC3, AC4, AC5). Del estudio se obtuvo que el T5 (desinfección con hipoclorito de sodio al 2% con exposición de 20 minutos) tuvo un 95% de sobrevivencia; mientras que en la germinación, el medio M1 (Fitogel) presentó el más alto con un 72,55%; finalmente en la morfogénica se determinó que el mejor tratamiento para inducir la formación de callos es el tratamiento AC4 (Kin 12 ppm + AIB 12 ppm), para primordios radiculares el mejor tratamiento AC5 (Kin 4 ppm + AIB 12 ppm) y se logró igual cantidad de brotes con todas las combinaciones de fitohormonas utilizadas.

10.24841/fa.v31i1.572

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Methodology for the phenotypic evaluation in <i>Guazuma crinita</i> trees in Ucayali, Peru

Ciência Florestal (2024)

Jorge Manuel Revilla-Chávez Edinson Eduardo López-Galán Antony Cristhian Gonzales-Alvarado Lyanna Hellen Sáenz-Ramírez Jorge Arturo Mori-Vásquez

The objective of this study was to present a methodological tool for the phenotypic evaluation in progeny tests of Guazuma crinita in producer plots of the Aguaytía river basin, Ucayali, Peru, which allows field technicians to standardize the morphological evaluation criteria of trees in forest plantations. Therefore, the phenotypic traits were evaluated for plant height (m), diameter at the height of the base (cm), number of branches, number of rings, stem form, branch orientation, presence and quantity of leaves. The heritability and genetic and phenotypic correlations between traits were also estimated. Therefore, 32 morphological categories were plotted based on the significant correlations (p≤ 0.05) shown between the place of planting, the stem form, the orientation of the branches and the presence of leaves. For the same reason, the progeny showed low morphological patterns, being a low factor of phenotypic variability. It is concluded that the correlations between the biometric and morphological traits evaluated, allowed to validate the phenotypic evaluation procedures of Guazuma crinita progeny tests at 36 months of age.

Phenotypic trait

10.5902/1980509871675

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Efecto de la desinfección, el desarrollo foliar y las fitohormonas en la inducción de callos de Simarouba amara Aubl.

Ciencia y Tecnología Agropecuaria (2024)

Jorge Arturo Mori-Vásquez Nadia Masaya Panduro Tenazoa Nadia Masaya Panduro Tenazoa Mao Augusto Herrera-Saavedra Nathalia de Setta

Disinfection and callus induction in forest species is essential to improve genetic production. Although multiple methods exist, their application in forest plants requires further research. Therefore, this study focused on the effect of disinfection, leaf development and phytohormones on callus induction in Simarouba amara. The study was structured in two experiments. In the first experiment, the efficacy of leaflet disinfection was evaluated using a completely randomized design with three sodium hypochlorite treatments (0 %, 0.25 % and 0.5 %). The second experiment, focused on callus induction, was developed under a 3 x 6 factorial design, which included three stages of leaf development (young, intermediate and mature) and six combinations of phytohormones (BAP, TDZ, 2,4-D, BAP+TDZ, BAP+2,4-D, TDZ+2,4-D, all at 1 mg/L). The main results showed that 0.25 % sodium hypochlorite achieved 88.9 % asepsis, with a lower percentage of oxidation (17 %). It was observed that, combinations of BAP+2,4-D and TDZ+2,4-D promoted higher callus formation, increased callus area and fresh and dry matter production, especially in segments of intermediate leaf development stage. This study highlights the importance of adjusting disinfectant and phytohormones according to leaf development stage for successful callus induction in Simarouba amara.

10.21930/rcta.vol25_num3_art:3662

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Development, chlorophyll content, and nutrient accumulation in shoots of Melaleuca alternifolia in vitro under different light wavelengths and benzylaminopurine (BAP)

Research Square (Research Square) (2024)

Jean Carlos Cardoso Antony Cristhian Gonzales-Alvarado

Abstract In vitro growing of Melaleuca can contribute to the cloning of superior genotypes. Studies on factors affecting micropropagation are necessary, especially those using recent technologies, such as light-emitting diodes (LEDs). This study aimed at better understanding the effects of wavelengths on the development and physiology of Melaleuca cultivated in vitro, as well as the interaction of LED with N6-Benzylaminopurine (BAP), the main cytokinin used in micropropagation. The BAP and wavelengths, and their interaction, had a strong influence on most variables analyzed, altering the in vitro development and chlorophyll concentrations in the plants and changing the different variables of the culture medium, such as pH, EC, levels of Ca2+, Mg2+ and P in culture media and the nutrient accumulation in the shoots. The results demonstrated that the main effects of adding BAP in the in vitro cultivation of Melaleuca are the increase in the number of shoots, which resulted in a greater increase in fresh and dry mass, reduction in height and chlorophyll contents, complete inhibition of adventitious rooting, higher consumption of Mg and lower consumption of Ca and P from the culture media, higher contents of Fe and lower contents of P, S, Mn, Cu and B in the in vitro tissues.

Melaleuca alternifolia

10.21203/rs.3.rs-4249082/v1

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Development, chlorophyll content and nutrient accumulation in in vitro shoots of Melaleuca alternifolia under light-wavelengths and benzylaminopurine (BAP)

Research Square (Research Square) (2023)

Antony Cristhian Gonzales-Alvarado Jean Carlos Cardoso

Abstract In vitro growing of the Melaleuca could contribute to the cloning of superior genotypes. The studies of factors that affect the micropropagation are necessary, especially by the use of recent technologies, such as the use of light-emitting diodes (LEDs). This study aimed at better understanding the effects of wavelengths on the development and physiology of melaleuca cultivated in vitro, as well as the interaction of LEDs with the main cytokinin used in micropropagation, the N 6 -Benzylaminopurine (BAP). The BAP and wavelengths, as well as the interaction between them, had a strong influence on most of the variables analyzed, altering the in vitro development, chlorophyll concentrations in the plants, as well as changing the different variables analyzed from the culture medium, such as pH, EC, quantities of Ca 2+ , Mg 2+ and P in the culture media and the nutrient accumulation in the shoots. The results demonstrate that the main effects of the addition of BAP in the in vitro cultivation of melaleuca are: the increase in the number of shoots which resulted in greater increase in fresh and dry mass; reduction of height and chlorophyll contents; completely inhibition of adventitious rooting; higher consumption of Mg and lower consumption of Ca and P from the culture media; higher contents of Fe and lower contents of P, S, Mn, Cu and B in the in vitro tissues.

Melaleuca alternifolia

Melaleuca

10.21203/rs.3.rs-2849089/v1

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Development, Chlorophyll Content, and Nutrient Accumulation in In Vitro Shoots of Melaleuca alternifolia under Light Wavelengths and 6-BAP

Plants (2024)

Antony Cristhian Gonzales-Alvarado Jean Carlos Cardoso

In vitro cultivation of Melaleuca could contribute to the cloning of superior genotypes. Studies of factors affecting micropropagation are needed, such as the interaction with light-emitting diodes (LEDs) and plant growth regulators added to the culture media. This study aimed at better understanding the effects of spectra on the development and physiology of melaleuca cultivated in vitro, as well as the interaction of LEDs with the main cytokinin used in micropropagation, N6-Benzylaminopurine (6-BAP). 6-BAP, spectra, and their interaction had a significant effect on most of the variables analyzed, altering the in vitro development and chlorophyll concentrations in the plants, as well as changing different variables in the culture medium, such as pH, EC, and levels of Ca2+, Mg2+, and P, and nutrient accumulation in the shoots. The results demonstrate that the main effects of adding BAP to the in vitro cultivation of melaleuca are an increase in the number of shoots, which resulted in greater fresh and dry masses; a reduction in height and chlorophyll content; complete inhibition of adventitious rooting; higher consumption of Mg, and lower consumption of Ca and P from the culture medium; higher content of Fe, and lower content of P, S, Mn, Cu and B in the in vitro shoot tissues.

Melaleuca alternifolia

10.3390/plants13202842

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