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Forests 2017, 8(1), 22; doi:10.3390/f8010022

Spatial Genetic Structure within and among Seed Stands of Pinus engelmannii Carr. and Pinus leiophylla Schiede ex Schltdl. & Cham, in Durango, Mexico

1
Maestría Institucional en Ciencias Agropecuarias y Forestales, Universidad Juárez del Estado de Durango, Apdo. Postal 741. Zona Centro, 34000 Durango, México
2
Instituto de Silvicultura e Industria de la Madera, Universidad Juárez del Estado de Durango, Boulevard del Guadiana No. 501, Ciudad Universitaria, 34120 Durango, México
3
Thünen-Institute of Forest Genetics, Sieker Landstr. 2, D-22927 Grosshansdorf, Germany
4
Instituto Nacional de Investigaciones Agropecuarias, Extensión Experimental Tropical Pichilingue Km 5 vía Quevedo-El Empalme, cantón Mocache, Provincia Los Ríos, Portoviejo 120552, Ecuador
5
Facultad de Ciencias Forestales, Universidad Juárez del Estado de Durango, Blv. Durango y Ave. Papaloapan. Col. Valle del Sur, s/n, 34120 Durango, México
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy A. Martin
Received: 27 October 2016 / Revised: 20 December 2016 / Accepted: 1 January 2017 / Published: 10 January 2017
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Abstract

Studies of spatial genetic structure (SGS) are important because they offer detailed insights into historical demographic and evolutionary processes and provide important information regarding species conservation and management. Pinus engelmannii and P. leiophylla var. leiophylla are two important timber tree species in Mexico, covering about 2.5 and 1.9 million hectares, respectively. However, studies in relation to population genetics are unfortunately scant. The aim of this research was to use amplified fragment length polymorphisms (AFLP) analysis to identify potential differences in spatial genetic structure within and among seven Pinus engelmannii and nine P. leiophylla var. leiophylla seed stands in Durango, Mexico. Within the 16 seed stands of the two tested pine species, no significant SGS was detected, although SGS was detected among the seed stands. We concluded that the collection of seed in only some seed stands should not significantly alter the degree of genetic differentiation within the (collected) seed. Distances between seed orchards and pollen propagators of more than 24 km for P. engelmannii and 7 km for P. leiophylla may be sufficient to limit contamination. Finally, local seeds should be used for (re)forestation. View Full-Text
Keywords: spatial distribution; AFLP; autocorrelation; isolation; gene flow spatial distribution; AFLP; autocorrelation; isolation; gene flow
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MDPI and ACS Style

Ortiz-Olivas, M.E.; Hernández-Díaz, J.C.; Fladung, M.; Cañadas-López, Á.; Prieto-Ruíz, J.Á.; Wehenkel, C. Spatial Genetic Structure within and among Seed Stands of Pinus engelmannii Carr. and Pinus leiophylla Schiede ex Schltdl. & Cham, in Durango, Mexico. Forests 2017, 8, 22.

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