CARACTERÍSTICAS REPRODUCTIVAS Y CALIDAD DE SEMILLA EN POBLACIONES FRAGMENTADAS DE Pinus chiapensis (MARTÍNEZ) ANDRESEN

Capilla-Dinorin, Elisea; López-Upton, Javier; Jiménez‐Casas, Marcos; Rebolledo-Camacho, Virginia

doi:10.35196/rfm.2021.2.211

Cited by 4 publications

(14 citation statements)

References 7 publications

(11 reference statements)

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“…Generally, the higher-elevation provenances (San Pedro, El Tizne, Las Tejas and El Nanche) did not exhibit issues in seedling emergence compared to the lower-elevation ones (Sesteadero and Rosario). This aligns with the reports for P. patula and P. chiapensis (Martínez) Andresen, where higher-elevation populations showed the greater capacity and speed of seedling emergence [13,20]. According to the results of this study, the hypothesis that the provenance and tree factor influence the parameters studied is accepted because the environmental variations of the site of origin shape the genetic component.…”

Section: Variation Between Provenances and Between Treessupporting

confidence: 90%

“…The peak emergence value of the resinous tree provenances of P. oocarpa was similar to the values of P. chiapensis (2.26 to 4.44) [20], but lower than the values of populations of P. cembroides (4.35 to 5.37) and P. orizabensis (4.63 to 4.72) [12]. On the other hand, Las Tejas and El Nanche had peak emergence values similar to what was reported for populations of P. hartwegii (12.33 to 18.0), San Pedro and El Tizne had higher values while Rosario and Sesteadero had lower values [17].…”

Section: Variation Between Provenances and Between Treessupporting

confidence: 69%

“…With the aforementioned model, the variance components associated with each source of variation were obtained using the VARCOMP procedure with the REML option in the SAS 3.4 statistical program [20].…”

Section: Discussionmentioning

confidence: 99%

“…Some P. oocarpa provenances had values similar to those of other species such as P. devoniana Lindl. (64.4%), P. pseudostrobus (74.8%) [38], P. patula (54.2 to 88.3%) P. chiapensis (50.5 to 87.0%) [20] and P. patula Schiede ex Schltdl. and Cham var.…”

Section: Variation Between Provenances and Between Treesmentioning

confidence: 99%

“…On the other hand, the altitude and climatic factors of geographic origin influence the physiological quality of seeds of the genus Pinus L. [13,16,17], generating patterns of clinal variation as an adaptive response [18][19][20]. Although the relationship between the physiological quality of seeds and elevation and environmental variables has not been studied in P. oocarpa, it has been demonstrated that the growth in the diameter and height of seedlings has a quadratic relationship with the elevation of the sites of origin [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Altitudinal Genetic Variation of Pinus oocarpa Seedling Emergence in the Southern Mountains, Oaxaca, Mexico

Velasco-García,

Hernández-Hernández

2023

Seeds

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Pinus oocarpa is the most important conifer for resin production in Mexico, so superior resin trees were selected in the Southern Mountains of Oaxaca, Mexico. The objective was to determine the variation and differences among provenances and among trees according to the parameters of seedling emergence and the number of cotyledons, and their relationship with elevation and climatic variables. The seedling emergence of four replicates of 20 seeds from 80 trees was counted daily. For the emergence parameters, provenance contributed 42.02% to the total variance, tree 29.19% and error 28.79%. Only tree (11.71%) and error (88.29%) contributed to the total variance of the cotyledon number. The effect of provenance (p ≤ 0.0006) and tree (p ≤ 0.0001) was significant for all variables evaluated. Higher-elevation provenances and trees had higher emergence values. The emergence parameters were positively associated with tree elevation. Climatic variables related to precipitation and temperature were negatively related to the emergence parameters. The results allow for the selection of phenotypes without emergence problems to establish seed orchards.

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Section: Variation Between Provenances and Between Treessupporting

confidence: 90%

Section: Variation Between Provenances and Between Treessupporting

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Section: Variation Between Provenances and Between Treesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Altitudinal Genetic Variation of Pinus oocarpa Seedling Emergence in the Southern Mountains, Oaxaca, Mexico

Velasco-García,

Hernández-Hernández

2023

Seeds

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Geographical and Climatic Variation of <em>Pinus oocarpa</em> Resin in Southern Mexico Provenances

Velasco-García,

Hernández-Hernández

2024

Preprint

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In Mexico there is a deficit in the production of pine resin, because it depends on natural forests. Therefore, it is necessary to select provenances and phenotypes of potential species such as P. oocarpa. The objective was to determine the difference between provenances and the variation of resin components and quality, as well as the effect of geographic and climatic factors. Resin from five provenances was collected from southern Mexico. The percentage of rosin, turpentine and water was obtained, as well as the acidity and saponification index. P. oocarpa resin had 80.94 % rosin, 7.7 % turpentine and 11.49 % water. The saponification and acidity index was 125.47 and 117.49 mg KOH.g_1, respectively. All variables showed differences (p≤ 0.0001) between provenances. The provenance contributed between 6.44 and 11.71 % to the total variance, the error contributed between 88.29 and 93.56 %. Geographic and climatic variables only had an effect on the percentage of turpentine; the correlation was negative with altitude and longitude, but positive with temperature and precipitation. The results allow defining seed collection sites for resin plantations and orienting the selection for a P. oocarpa improvement program.

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Calidad de semilla y crecimiento de planta en poblaciones y altitudes de Pinus hartwegii Lindl

Mendoza

Casas

Ramírez-Herrera

et al. 2022

RMCF

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La reproducción y el crecimiento de especies de alta montaña adaptadas a bajas temperaturas, podrían afectarse por el calentamiento global, particularmente en altitudes marginales donde el estrés es más intenso. En este estudio se evaluó la calidad de semilla y el crecimiento inicial en varios gradientes altitudinales de tres poblaciones (dos del Estado de México y una de Veracruz) de Pinus hartwegii, donde las semillas se recolectaron entre 3 400 y 4 100 msnm. El diseño experimental fue completamente al azar y se registraron datos de germinación de semillas, rompimiento del estado cespitoso y crecimiento de plantas. La capacidad germinativa de las semillas fue de 87 %, con valor pico de 3.2 y germinativo de 10.9, pero con variación significativa entre poblaciones y gradientes. La menor capacidad germinativa (50 %) se obtuvo con semillas procedentes del mayor gradiente altitudinal (4 100 m). El rompimiento del estado cespitoso varió según la población y altitud. Respecto a las plántulas de Veracruz, 75 % de ellas rompieron el estado cespitoso a los cinco meses de edad, en contraste con las del Estado de México, cuyo registro fue menor a 35 %. Referente a la altitud, las plantas procedentes del mayor intervalo prolongaron el rompimiento del estado cespitoso por más de dos meses, lo cual influyó en el bajo crecimiento inicial de las plantas. Lo anterior indica que la población de 4 000 m podría estar en declinación, a diferencia de los otros gradientes altitudinales que mostraron excelente calidad de semillas y crecimiento de plantas.

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CARACTERÍSTICAS REPRODUCTIVAS Y CALIDAD DE SEMILLA EN POBLACIONES FRAGMENTADAS DE Pinus chiapensis (MARTÍNEZ) ANDRESEN

Cited by 4 publications

References 7 publications

Altitudinal Genetic Variation of Pinus oocarpa Seedling Emergence in the Southern Mountains, Oaxaca, Mexico

Altitudinal Genetic Variation of Pinus oocarpa Seedling Emergence in the Southern Mountains, Oaxaca, Mexico

Geographical and Climatic Variation of <em>Pinus oocarpa</em> Resin in Southern Mexico Provenances

Calidad de semilla y crecimiento de planta en poblaciones y altitudes de Pinus hartwegii Lindl

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