Caracterización de la morfología de la semilla de Pinus Occidentalis Swartz

Mejía, Virgilio Antonio Miniño; Francisco, Luis; Perdomo, Omar Paíno; León, Yolanda; Paulino, Liz

doi:10.22206/cys.2014.v39i4.pp777-801

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The plasticity results showed that smaller seeds had higher growth and development capacity than medium and larger seeds, so they have a greater ecological advantage as they can be widely distributed at different sites (Moles and Westoby, 2004), i.e., a higher value of root biomass indicates that seeds are more drought resistant (Olmo et al, 2014) and may have a better survival rate at sites with low moisture availability. However, these results differ from those reported by Miniño et al (2014), who elucidated that a large seed would give a larger seedling with a higher probability of survival as compared to a smaller one. For the stem dry biomass, Q. variabilis recorded lower values (18.56 to 29.78) compared to pine species (35.04 to 43.03) recorded by Flores et al (2018) using the same phenotypic plasticity index.…”

Section: Results and Discusioncontrasting

confidence: 99%

Phenotypic plasticity and biomass allocation in fertilized Quercus var-iabilis Blume seedlings

Flores,

Corona-Ambriz,

Méndez-González

et al. 2024

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Objective: To determine the phenotypic plasticity between fertilized (F) and unfertilized (UF) Q. variabilis seedlings developed in a nursery using small, medium, and large seeds. Design/methodology/approach: By analyzing the phenotypic traits of growth (height and diameter at root collar) and root and stem dry biomass, plasticity indices and allocation patterns were assessed, and phenotypic traits in which the interaction effect of the seedling fertilization and seed size was observed. Results: The results showed significant differences (p-value≤0.05) in the growth and biomass traits except for the root dry biomass, and significant differences were found both in the fertilization and seed size factors and in the fertilization and seed size interaction in phenotypic traits. For plasticity, all traits showed marked changes in response to the nutrient application, and small seeds had the highest plasticity indices. With respect to phenotypic change indices, medium seeds reached the highest values (0.94 for height and 0.92 for diameter). Large seeds recorded the highest index for root dry biomass (1.01), and medium seeds had the highest values of plasticity for stem dry biomass (0.81). Allometric differences were observed (intercepts were 1.8374 and 3.4956, and slopes were 4.0943 and 1.7038 for UF and F seedlings, respectively), and variations in the study factors (fertilization and seed size). Limitations on study/implications: In order to improve the survival of plants in the field it is necessary to use seeds with high quality. Findings/conclusions: Fertilization of Q. variabilis seedlings increases their biomass production, which allows for greater growth and survival compared to unfertilized ones.

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Section: Results and Discusioncontrasting

confidence: 99%

Phenotypic plasticity and biomass allocation in fertilized Quercus var-iabilis Blume seedlings

Flores,

Corona-Ambriz,

Méndez-González

et al. 2024

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“…The morphological variables and the physical characteristics analyzed of the seed in Taxus globosa Schltdl. allowed to establish significant differences between geographical regions (Ramírez-Sánchez et al, 2011). Miniño Mejía et al (2014 analyzed the variability between populations of Pinus occidentalis Swartz based on morphological characteristics of the seed, while the external characteristics of the seeds allowed to identify different levels of variation in Bombacopsis quinata (Jacq.)…”

Section: Resultsmentioning

confidence: 99%

Morphological characterization of seeds and germination of Pseudotsuga menziesii (Mirb.) Franco (Pinaceae)

Ríos-Palma¹,

Contreras-Toledo

Pichardo-González

et al. 2019

JNAS

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Pseudotsuga menziesii (Mirb.) Franco is a species of economic and ecological importance for Mexico. Several actions have been implemented for its ex situ conservation. However, the lack of characterization data is a limiting factor in genebanks. In this study, morphological characteristics and seed germination traits were evaluated in 12 accessions of P. menziesii from Tlaxcala and Puebla. Fifteen seed variables, germination percentage (PG), days to germination (DG) and radicle growth (CR) were measured in 100 seeds (four replicas of 25 seeds each) per accession. A principal component analysis, a cluster analysis and the estimation of the relationship between seed variables and germination traits were performed. The variables that had largest influence on the distribution of morphological variation were: LA, ASC, AS and AA/AS. The accessions were distributed in five general groups according mainly to their geographical origin. For some accessions, PG and CR had a direct relationship with seed size variables. These results showed the presence of variation and the influence of seed morphology on the germination of the evaluated accessions.

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Caracterización de la morfología de la semilla de Pinus Occidentalis Swartz

Cited by 2 publications

References 14 publications

Phenotypic plasticity and biomass allocation in fertilized Quercus var-iabilis Blume seedlings

Phenotypic plasticity and biomass allocation in fertilized Quercus var-iabilis Blume seedlings

Morphological characterization of seeds and germination of Pseudotsuga menziesii (Mirb.) Franco (Pinaceae)

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