López Upton, Javier; Velazco Fiscal, Valentín; Jasso Mata, Jesús; Ramírez Herrera, Carlos; Vargas Hernández, J. Jesús
December 2001
Acta Botanica Mexicana;2001, Issue 57, p51
Academic Journal
Natural hybridization between Pinus oocarpa Schiede ex Schlechtendal and P. pringlei Shaw was detected in a sample of 30 individual trees living in simpatry including putative hybrid trees. The area of hybridization is located near Ario de Rosales, Michoacán, México. The canonical discriminant analysis used in the study included a total of 19 morphological and anatomical leaf, cone and seed traits. Trees initially characterized as putative hybrids had intermediate values between parental species for most traits. The number of leaves per fascicle, rows of stomata on the dorsal surface, internal and septal resin canals, peduncle length and cone diameter contributed the most to the canonical discriminant functions and to the separation of the parental species and putative hybrid trees. A second discriminant analysis was performed on samples from 10 trees of P. oocarpa and 7 trees of P. pringlei collected from pure stands outside the area of sympatry and on the data from the 30 trees sampled throughout the sympatric area. In a graphic analysis, trees of every species separated into opposite groups. Furthermore, trees from pure stands were positioned toward the extremes of these groups, indicating a possible process of introgression within the population where hybridization was believed to occur.


Related Articles

  • Genetic variation of populations of Pinus oocarpa revealed by resistance gene analog polymorphism (RGAP). Diaz, V.; Ferrer, E. // Genome;Jun2003, Vol. 46 Issue 3, p404 

    Primers based on conserved motifs of plant resistance genes were used to generate multilocus molecular markers--referred to as resistance gene analog polymorphisms (RGAPs)--in Pinus oocarpa subsp. oocarpa. Ten populations from three regions of Nicaragua were analyzed with 53 RGAPs. The aim of...

  • Comparison of gene expression markers during zygotic and somatic embryogenesis in pine. Lara-Chavez, Alejandra; Egertsdotter, Ulrika; Flinn, Barry // In Vitro Cellular & Developmental Biology Plant;Jun2012, Vol. 48 Issue 3, p341 

    The relative expression of developmentally regulated genes was analyzed during zygotic embryo development in Pinus taeda and somatic embryo development/maturation in P. taeda and Pinus oocarpa. The following four embryo samples were studied: zygotic pro-embryos and somatic embryogenic suspensor...

  • Can wood density be efficiently selected at early stage in maritime pine (Pinus pinaster Ait.)? Laurent Bouffier; C?line Charlot; Annie Raffin; Philippe Rozenberg; Antoine Kremer // Annals of Forest Science (EDP Sciences);Jan2008, Vol. 65 Issue 1, p106 

    Growth and stem straightness are the two main selection criteria in the French maritime pine breeding programme. In this contribution, our objective was to study the possibility of selecting for wood density assessed at an early stage. We measured X-ray wood density, in three progeny tests, on...

  • Hybridisation processes in sympatric populations of pines Pinus sylvestris L., P. mugo Turra and P. uliginosa Neumann. Wachowiak, W.; Prus-Głowacki, W. // Plant Systematics & Evolution;Mar2008, Vol. 271 Issue 1/2, p29 

    Natural hybridisation was postulated between the closely related pine species Pinus sylvestris and the P. mugo complex, however no clear evidence on propagation of mature hybrids in nature has been documented so far. To test the hybridisation hypothesis we applied chloroplast DNA ( cpDNA)...

  • PROPERTIES OF OSB PANELS WITH VENEER INCLUSION. Mendes, Rafael Farinassi; da Silva César, Antônia Amanda; da Silva, Marcela Gomes; Mendes, Lourival Marin; Carvalho, Amélia Guimarães // Maderas: Ciencia y Tecnología;Oct2015, Vol. 17 Issue 4, p843 

    This work aimed to evaluate the effect of veneer inclusion with different wood species, and also different levels of pressing pressure applied in the moment of the veneer inclusion over physicalmechanical properties of already consolidated OSB (Oriented Strand Board) panels. Treatments were...

  • TREE id.  // Hardwood Floors Magazine;Oct/Nov2009, Vol. 22 Issue 5, p17 

    The article provides an answer to a question regarding pine trees.

  • Bending strength of Chilean radiata pine poles. Cerda, Gina; Wolfe, Ronald W. // Forest Products Journal;Apr2003, Vol. 53 Issue 4, p61 

    Focuses on a study which evaluated the radiata pine poles in southern Chile following the guidelines established by the O5.1 standard of The American National Standards Institute for approval of foreign species. Pole nominal resistance; Material characteristics; Analysis of results.

  • POTENTIAL IMPACTS OF INCREASED MANAGEMENT INTENSITIES ON PLANTED PINE GROWTH AND YIELD AND TIMBER SUPPLY MODELING IN THE SOUTH. Siry, Jacek P.; Cubbage, Frederick W.; Malmquist, Andy J. // Forest Products Journal;Mar2001, Vol. 51 Issue 3, p42 

    Five management intensity classes were developed and used to estimate the potential planted pine growth and yield levels to be applied in the 2000 Rangeland Renewable Resource Act (RPA) assessment. These planted pine yields are compared to empirical pine yields, developed as a part of the...

  • Breeding for improved growth and juvenile corewood stiffness in slash pine. Xiaobo Li; Huber, Dudley A.; Powell, Gregory L.; White, Timothy L.; Peter, Gary F. // Canadian Journal of Forest Research;Oct2007, Vol. 37 Issue 10, p1886 

    The importance of integrating measures of juvenile corewood mechanical properties, modulus of elasticity in particular, with growth and disease resistance in tree improvement programs has increased. We investigated the utility of in-tree velocity stiffness measurements to estimate the genetic...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics