Variation in cone and seed characters in blue pine (Pinus wallichiana) across natural distribution in western Himalayas

Singh, Ombir; Thapliyal, Manisha

doi:10.1007/s11676-012-0246-4

Cited by 16 publications

(7 citation statements)

References 9 publications

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“…Cone shape may therefore potentially drive the high within‐cone variation we found here. Given that pines often exhibit considerable variation in cone shape (Forde, ; Gil et al, ; Singh & Thapliyal, ) it is likely to be a key character required to understand seed dispersal.…”

Section: Discussionmentioning

confidence: 99%

Partitioning intraspecific variation in seed dispersal potential using a low‐cost method for rapid estimation of samara terminal velocity

2019

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Seed or samara terminal velocity is a key trait affecting the dispersal potential of wind‐dispersed plants. However, this trait is often represented in dispersal models by a single mean value per species. This is despite considerable variation in dispersal traits within species and individuals that may have implications for both phenotypic selection and rates of spread. Methodological constraints may have acted as a barrier for robust assessments of intraspecific variation in seed terminal velocity. To quantify intraspecific variation in wind dispersal traits, we develop a low‐cost, time‐efficient method to measure the terminal velocity of a large number of samaras. We made three separate terminal velocity measurements for each of 750 Pinus radiata samaras, allowing partitioning of variation among individual cones, trees and source populations. We use the mechanistic WALD model to assess the potential influence of observed variation in samara terminal velocity on predicted dispersal kernels under a variety of realistic conditions. We demonstrate a twofold range in samara terminal velocity within P. radiata, with the highest variation occurring within individual cones, and the lowest among cones within individual trees. We identify a potential influence of source population on terminal velocity. Our modelling results demonstrate that this within‐species variation is sufficient to affect the shape of the predicted dispersal kernels, particularly the kernel tails and therefore the likelihood of long‐distance dispersal events. The effect of samara terminal velocity on dispersal is especially pronounced under environmental conditions that enhance seed dispersal. Our findings illustrate the scale of within‐species variation in a key dispersal trait, and the likely effect of this variation on dispersal distance. We suggest that the high level of variation observed within individual cones of P. radiata is likely to reduce the potential for phenotypic selection, and may either be indicative of a “bet‐hedging” strategy, or simply the result of the constraints of cone morphology on samara development. To obtain accurate dispersal models for wind‐dispersed species we highlight the necessity of capturing this variation for inclusion in future modelling approaches, and describe a device that can achieve such measurements easily and at low cost.

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Section: Discussionmentioning

confidence: 99%

Partitioning intraspecific variation in seed dispersal potential using a low‐cost method for rapid estimation of samara terminal velocity

2019

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“…Singh and Thapliyal [14] analyzed seed sources for genetic variation amongst exotic and indigenous Pinus sp. and the result presented a signifi cant diversity in height, length, the width of cone and seed.…”

Section: Discussionmentioning

confidence: 99%

“…The overall study result presented the heritability values of seed weight associated with maximum genetic gain. Such genetic traits disclosed a strong genetic control that revealed phenotypic and genotypic variations among the seed and cone are a result of genetic diversity [14]. The genetic variation occurred due to genotypic and environmental interaction.…”

Section: Discussionmentioning

confidence: 99%

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Phylogenetic and evolutionary relationships in selected Pinus species using rbcL and matK chloroplast genes

Singh¹,

Dixit²,

Srivastava³

et al. 2021

Open J Plant Sci

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The genetic diversity of Pinus plants has been assessed in various phylogenetic studies that reveal the polymorphism directly at DNA levels. The rbcL and matK are the most commonly used markers for phylogenetic studies of Pinus sp. that exhibit a diverse geophysical adaptiveness and geographical variations across different regions as a result of genotypic modifi cations. This study evaluated usefulness of rbcL and matK genes for molecular identifi cation and phylogenetic study among various species of Pinus. Maximum Likelihood (ML) and Neighbor Joining (NJ) analysis of the data obtained from rbcL gene belonging to ten Pinus species revealed four clusters. First Cluster included P. Wallichiana (PW), P.Elliottii (PEl) and P.Greggii (PG). Second cluster included P. Thunbergii (PT), P. Echinata (PE) and P.merkusii (PM). Third cluster included P.taeda (Ptd) and P. khasya (PK) while fourth cluster included P. Roxburghii(PR) and P. patula (PP). Similarly ML and NJ analysis of the data obtained from matK gene belonging to ten Pinus species revealed four cluster and one outgroup. First Cluster included P. Thunbergii (PT), P.Greggii (PG) and P.Elliottii (PEl) Second cluster included P. roxburghii(PR) and P.merkusii (PM)P. Echinata (PE) and third cluster included P. Wallichiana (PW) and P.taeda (Ptd) while fourth cluster included P. Patula (PP) and P. Khasya (PK). P.echinata remained out clustered in this analysis.

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“…Many forest species have shown inter-provenance variation in seed length and width, including Faidherbia albida (Delile) A. Chev. (Fredrick et al, 2015), Pinus roxbrughii (Ghildiyal et al, 2009), Celtis australis (Singh et al, 2006), Argania spinosa (Belcadi Haloui et al, 2017), and Pterocarpus erinaceus Poir (Johnson et al, 2020), suggesting that seed length and width are strongly influenced by geographical origins (Harel et al, 2011;Singh and Thapliyal, 2012;Madjelia and Kadidiatou, 2015;Belcadi Haloui et al, 2017;Louati et al, 2019). Geographical origin is under the influence of climatic and soil factors, which are responsible for the overall variation in plant traits (Joswig et al, 2022).…”

Section: Phenotypic Traits Show Great Variationmentioning

confidence: 99%

Influence of geographic provenance on phenotypic variation in seed and kernel traits of the African oil tree from southern Benin and implications for species breeding

Boko-Haya¹,

Ouinsavi²,

AKIN³

et al. 2022

Nova Geodesia

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Knowledge of oilseeds plants’ traits and features is fundamental to understanding the natural selection process and improving conservation programs through species selection. As a forest oilseed, Ricinodendron heudelotii is the object of growing interest among value chain actors, who are increasingly interested in its intrinsic characteristics. To date, there is a lack of information on plant morphological traits for the selection of the best genotype, especially as far as seed and kernel traits are concerned. The aim of this study was to make a typology and establish the relationship between seed and kernel traits of Ricinodendron heudelotii, depending on provenances represented by wild populations of trees in southern Benin. We sampled the provenances constituted equally and per tree, ten random samples each of fruits, seeds, kernels, and shells were collected for measurement. Hierarchical classification, common component analysis, Pearson’s, and Chi-square association tests were performed for statistical analysis. Substantial variation between seed and kernel traits was observed between and within provenances. High coefficients of variation for the quantitative descriptors (length, width, and mass) of seeds and kernels appear to be the essential traits that discriminate the plant into two morphotypes. Furthermore, seed and kernel characteristics show a significant positive correlation with these discrimination criteria. The upper morphotype contains accessions from three provenances with huge seeds and kernels but few seeds per fruit, while the lower morphotype includes the other provenances with tiny seeds and kernels. The results of the study provided essential information that could be an avenue for improvement with further biochemical and molecular characterization studies.

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Variation in cone and seed characters in blue pine (Pinus wallichiana) across natural distribution in western Himalayas

Cited by 16 publications

References 9 publications

Partitioning intraspecific variation in seed dispersal potential using a low‐cost method for rapid estimation of samara terminal velocity

Partitioning intraspecific variation in seed dispersal potential using a low‐cost method for rapid estimation of samara terminal velocity

Phylogenetic and evolutionary relationships in selected Pinus species using rbcL and matK chloroplast genes

Influence of geographic provenance on phenotypic variation in seed and kernel traits of the African oil tree from southern Benin and implications for species breeding

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