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Article

Some Factors Involved in the Success of Side Veneer Grafting of Pinus engelmannii Carr.

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Programa Institucional de Doctorado en Ciencias Agropecuarias y Forestales, Universidad Juárez del Estado de Durango, Constitución 404 sur Zona Centro, Durango CP 34000, Mexico
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Facultad de Ciencias Forestales, Universidad Juárez del Estado de Durango, Río Papaloapan y Blvd. Durango S/N Col. Valle del Sur, Durango CP 34120, Mexico
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Colegio de Postgraduados, Campus Montecillo, Carretera México-Texcoco Km 36.5, Montecillo CP 56230, Texcoco, Mexico
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Instituto de Silvicultura e Industria de la Madera, Universidad Juárez del Estado de Durango, Boulevard del Guadiana 501, Ciudad Universitaria, Torre de Investigación, Durango CP 34120, Mexico
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Author to whom correspondence should be addressed.
Forests 2019, 10(2), 112; https://doi.org/10.3390/f10020112
Received: 30 November 2018 / Revised: 23 January 2019 / Accepted: 29 January 2019 / Published: 30 January 2019
(This article belongs to the Section Forest Ecophysiology and Biology)
The establishment of clonal seed orchards is a viable option for the continuous production of improved seed of desired genotypes. Grafting is the main technique used to establish clonal seed orchards. The objective of this study was to examine how the geographic location and the age class of the donor trees of buds, the phenological status of the buds, and the anatomical characteristics of the scions and the rootstocks affect the survival and growth of Pinus engelmannii Carr. grafts. Scions were collected from two trees in each of three age classes (young, middle-aged, and old). Grafting was performed with buds in two physiological states (end of dormancy and beginning of sprouting). Cross-sections of the grafted organs were obtained for anatomical analysis. A Cox proportional hazards model was used to determine the effects of the variables that were considered. The age class of the scion donor trees, the total area of the cut surface of the scion, and the density of resin channels in the scions significantly affected (p < 0.05) survival of the grafts. By contrast, the physiological state of the buds and the other anatomical characteristics of the grafted organs did not significantly affect graft survival. In P. engelmannii, grafting was most effective when scions from middle-aged trees were used. Graft survival was enhanced by a small total area of the cut surface of the scion and low density of resin channels in the scions. The area of the cambium of the scions directly influenced growth of the grafts. View Full-Text
Keywords: donor tree; graft compatibility; resin channels; Cox model donor tree; graft compatibility; resin channels; Cox model
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MDPI and ACS Style

Pérez-Luna, A.; Prieto-Ruíz, J.Á.; López-Upton, J.; Carrillo-Parra, A.; Wehenkel, C.; Chávez-Simental, J.A.; Hernández-Díaz, J.C. Some Factors Involved in the Success of Side Veneer Grafting of Pinus engelmannii Carr. Forests 2019, 10, 112. https://doi.org/10.3390/f10020112

AMA Style

Pérez-Luna A, Prieto-Ruíz JÁ, López-Upton J, Carrillo-Parra A, Wehenkel C, Chávez-Simental JA, Hernández-Díaz JC. Some Factors Involved in the Success of Side Veneer Grafting of Pinus engelmannii Carr. Forests. 2019; 10(2):112. https://doi.org/10.3390/f10020112

Chicago/Turabian Style

Pérez-Luna, Alberto, José Ángel Prieto-Ruíz, Javier López-Upton, Artemio Carrillo-Parra, Christian Wehenkel, Jorge Armando Chávez-Simental, and José Ciro Hernández-Díaz. 2019. "Some Factors Involved in the Success of Side Veneer Grafting of Pinus engelmannii Carr." Forests 10, no. 2: 112. https://doi.org/10.3390/f10020112

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