Efficiency of early selection in <i>Calycophyllum spruceanum</i> and <i>Guazuma crinita</i>, two fast-growing timber species of the Peruvian Amazon

Cornelius, J.P.; Pinedo-Ramírez, Roger Alejandro; Montes, Carmen Sotelo; Ugarte-Guerra, Leoncio Julio; Weber, John C.

doi:10.1139/cjfr-2017-0407

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…Tree breading programs increase wood quality and forestry production; such is the case of Scots pine , Norway spruce , Stika spruce , Eucalyptus pellita and Acacia mangium [ 5 , 6 ]. In the amazon forest there is interest in tree breading programs of Capirona and Bolaina [ 7 ]. These fast-growing trees deliver wood products at an early stage [ 8 ] and can be coppiced for successive harvests [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Determination of hemicellulose, cellulose, holocellulose and lignin content using FTIR in Calycophyllum spruceanum (Benth.) K. Schum. and Guazuma crinita Lam.

2021

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Capirona (Calycophyllum spruceanum (Benth.) K. Schum.) and Bolaina (Guazuma crinita Lam.) are fast-growing Amazonian trees with increasing demand in timber industry. Therefore, it is necessary to determine the content of cellulose, hemicellulose, holocellulose and lignin in juvenile trees to accelerate forest breeding programs. The aim of this study was to identify chemical differences between apical and basal stem of Capirona and Bolaina to develop models for estimating the chemical composition using Fourier transform infrared (FTIR) spectra. FTIR-ATR spectra were obtained from 150 samples for each species that were 1.8 year-old. The results showed significant differences between the apical and basal stem for each species in terms of cellulose, hemicellulose, holocellulose and lignin content. This variability was useful to build partial least squares (PLS) models from the FTIR spectra and they were evaluated by root mean squared error of predictions (RMSEP) and ratio of performance to deviation (RPD). Lignin content was efficiently predicted in Capirona (RMSEP = 0.48, RPD > 2) and Bolaina (RMSEP = 0.81, RPD > 2). In Capirona, the predictive power of cellulose, hemicellulose and holocellulose models (0.68 < RMSEP < 2.06, 1.60 < RPD < 1.96) were high enough to predict wood chemical composition. In Bolaina, model for cellulose attained an excellent predictive power (RMSEP = 1.82, RPD = 6.14) while models for hemicellulose and holocellulose attained a good predictive power (RPD > 2.0). This study showed that FTIR-ATR together with PLS is a reliable method to determine the wood chemical composition in juvenile trees of Capirona and Bolaina.

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Section: Introductionmentioning

confidence: 99%

Determination of hemicellulose, cellulose, holocellulose and lignin content using FTIR in Calycophyllum spruceanum (Benth.) K. Schum. and Guazuma crinita Lam.

2021

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“…Estudios realizados en plantaciones de Calycophyllum spruceanum con fertilización demuestran la influencia significativa de los nutrientes en el rápido crecimiento de la especie (Vilchez, 2019). Sin embargo, existen otros factores adicionales que influyen en el crecimiento de las plantas, como fisiografía, factores climatológicos (Villasana & Suárez, 1997;Dambroth & Bassam, 1983), y factores genéticos (Alencar, 1994., Sotelo et al, 2006Cornelius et al, 2018).…”

Section: Discussionunclassified

“…Los agricultores silvicultores de la Amazonía peruana pueden contribuir al sector forestal a través de la producción sustentable de esta destacada especie maderable (Orrego & Bustamante, 2017;Cornelius et al, 2018;Correa et al 2019). Una de las características de la capirona es tolerar los periodos largos de inundación (3-4 meses), por tal motivo juega un rol importante en la adaptación al cambio climático.…”

Section: Introductionunclassified

SILVICULTURA DE UN RODAL DE REGENERACIÓN NATURAL DE Calycophyllum spruceanum (Benth.) Hook. f. ex K. Schum (RUBIACEAE) EN LA LLANURA ALUVIAL INUNDABLE DE IQUITOS, AMAZONÍA PERUANA

et al. 2021

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Los rodales de Calycophyllum spruceanum (Benth.) Hook. f. ex K. Schum., conocidos localmente como capironales, ocurren naturalmente en la planicie de inundación de los ríos principales de la Amazonía baja peruana. En el presente estudio, se caracterizó la estructura horizontal y se analizó la condición silvicultural de un rodal de capirona ubicado en el distrito de Belén, departamento de Loreto. Se realizó un inventario forestal y se midieron los parámetros sobre la condición silvicultural de las plantas según categorías de tamaño. El rodal tiene 8 años y presenta 961 individuos, 7,68 m2 de área basal y un volumen de 25,68 m3 . La condición silvicultural según iluminación de copas muestra que el 40,48% de la población se encuentra en condiciones deficientes de luz y pertenecen al grupo de latizales, esta situación también afecta la forma de las copas, ya que dentro de este grupo el 33,51% corresponden a la categoría tolerable con medio círculo de copa y un 22,27 son copas pobres a muy pobres. En cuanto a la calidad de fuste el 30,07% de individuos presentan fustes bien rectos y cilíndricos y 25,7% con fuste recto en la mayor parte de su longitud. El análisis silvicultural del rodal muestra que existe un alto número de plantas con deficiente iluminación y forma de copas, por lo que se considera que el tratamiento silvicultural adecuado es un raleo de tipo selectivo-elegido con fin de regular el distanciamiento entre las plantas mejor conformadas y vigorosas y mejorar las condiciones para su desarrollo.

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“…Given the limited data from the existing provenance, family progeny, or clonal test plantations are not adequate to establish growth and yield models of genetically improved stands, it is often necessary to select good varieties according to the early growth performance to shorten the breeding cycle, and the early selection age is often less than half of the rotation period (Hallingbäck et al 2018;Cornelius et al 2018). Therefore, development of a growth and yield model for genetically improved stands may need to be based on the early growth data from test plantations, before maturity.…”

Section: Experimental Data For Growth and Yield Models Of Genetically Improved Standsmentioning

confidence: 99%

Development of improved and comprehensive growth and yield models for genetically improved stands

Deng

Froese

Zhang

et al. 2020

Annals of Forest Science

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& Key message This synthesis of the literature on incorporation of genetic gain into growth and yield models reveals a fundamental challenge associated with the rapid progress in genetics and breeding and limited empirical data on improved stands. Model improvements depend on a better understanding of both the biological basis for gain and of interactions between genetic and non-genetic factors on gain. & Context Continued development of new genetic varieties of trees requires accurate stand growth and yield models to predict growth trajectories and genetic gain of the new varieties using early-age growth data. & Aims To identify how the effects of genetic variety on growth and yield models could be analyzed and genetic information could be incorporated into these models for accurate growth simulation and improved yield prediction of genetically improved stands. & Results Genetic variety may affect one or several of the asymptotic parameters, shape parameters, and rate parameters of growth and yield models, which can be assessed by testing the parameter differences of the models. After determination of the influence of genetic varieties on model parameters and considering the existing general stand growth equation, the genetic gain can be incorporated into growth and yield models by calculation of genetic gain multipliers, adjustment of the site index, and calibration of the new model parameters. & Conclusion Accurate and effective growth and yield models for genetically improved stands require a better understanding of the effects of genetics, environment, and silviculture measures on tree and stand growth.

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Efficiency of early selection in Calycophyllum spruceanum and Guazuma crinita, two fast-growing timber species of the Peruvian Amazon

Cited by 6 publications

References 17 publications

Determination of hemicellulose, cellulose, holocellulose and lignin content using FTIR in Calycophyllum spruceanum (Benth.) K. Schum. and Guazuma crinita Lam.

Determination of hemicellulose, cellulose, holocellulose and lignin content using FTIR in Calycophyllum spruceanum (Benth.) K. Schum. and Guazuma crinita Lam.

SILVICULTURA DE UN RODAL DE REGENERACIÓN NATURAL DE Calycophyllum spruceanum (Benth.) Hook. f. ex K. Schum (RUBIACEAE) EN LA LLANURA ALUVIAL INUNDABLE DE IQUITOS, AMAZONÍA PERUANA

Development of improved and comprehensive growth and yield models for genetically improved stands

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