Germinación de semillas de Pinus patula en residuos de cáscara de nuez (Juglans regia L.) en vivero / Seed germination of Pinus patula in waste Nutshell (Juglans regia L.) in nursery

Romero‐Arenas, Omar; Tapia, José Antonio Rivera; López-Olguín, Jesús Francisco; Barros, Oscar Agustín Villarreal Espino; Lara, Manuel Huerta; Lezama, Conrado Parraguirre

doi:10.23913/ciba.v2i4.21

Cited by 1 publication

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“…Additionally, higher values were reported for populations of other species such as P. nigra Arnold var. salzamannii (Dunal) Franco (90 to 94.5%) [39], P. patula (82.5 to 85.4%) [40], P. cembroides (82 to 95%), P. orizabensis (82.13 to 87.13%) [12] and seed production stands of P. engelmannii Carr. (78.5 to 98.1%) [41].…”

Section: Variation Between Provenances and Between Treesmentioning

confidence: 99%

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 Treesmentioning

confidence: 99%