Variation in needle-trace diameter in respect of needle morphology in five conifer species

Pensa, Margus; Aalto, Tarmo; Jalkanen, Risto

doi:10.1007/s00468-003-0307-6

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…Our results are in agreement with a number of studies showing that abiotic factors, such as climate conditions, affect not only morphological and anatomical characteristics of P.nigra needles (Schoettle and Rochelle 2000;Jankowski et al 2017), but also geographical distribution of the species (Niinemets et al 2001;Urbaniak et al 2003;Pensa et al 2004). Similarly, studying morpho-anatomical structure of P.heldreichii needles in two natural populations situated in Serbia and North Macedonia, Nikolić et al (2019) reported that population from Serbia was characterized by significantly shorter, but wider and with narrower resin ducts.…”

Section: Resultssupporting

confidence: 92%

Variability of morpho-anatomical features of black pine needles at the area of Jastrebac and Goč

Živanović,

Jokanović

2023

REFOR

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In this paper the variability of morphological (needle length and needle width) and anatomical (needle thickness, resin ducts width, epidermis thickness, hypodermis height and number of the hypodermis layers) properties of black pine (Pinus nigra J.F. Arnold) needles were studied at the intra- and inter-population levels. Two mountains in Serbia, Jastrebac and Goč, were selected as experimental plots. Three black pine trees were selected from both localities (6 in total). Obtained results showed that trees on Goč had bigger dimensions of the following elements: needle length, needle width, hypodermis height, number of hypodermis layers, needle thickness and epidermis thickness. On the other hand, only resin ducts width was greater by the trees from Jastrebac. The results of the analysis of variance showed that variation between studied populations, as well as variation between trees within populations was statistically significant for all needle traits except resin ducts width and hypodermis height.

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Section: Resultssupporting

confidence: 92%

Variability of morpho-anatomical features of black pine needles at the area of Jastrebac and Goč

Živanović,

Jokanović

2023

REFOR

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“…The needle trait of mesophyll tissue is the main place of photosynthesis and fixed carbon assimilation of plant, vascular tissue is the main area of needles to divert water, inorganic salts and organic compounds, stomatal regulation of water transpiration and gas exchange with the environment of the channel, resin only with resistance. Populations of different environments in order to adapt to the local environment, the adaptability traits of its needle will have varying degrees of variation (Pensa M. et al, 2004). In order to adapt to the local environment, the adaptability traits of the needle will have different degree of variation.…”

Section: Variation Patterns and Genetic Structures Of Needle Morpholomentioning

confidence: 99%

Genetic Analysis of Needle Morphological and Anatomical Traits among Nature Populations of Pinus Tabuliformis

Zhang¹,

Meng²,

Zhang³

et al. 2017

JPS

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The morphological and anatomical traits of needles are important to evaluate geographic variation and population dynamics of conifer species. Variations of morphological and anatomical needle traits in coniferous species are considered to be the consequence of genetic evolution, and be used in geographic variation and ecological studies, etc. Pinus tabuliformis is a particular native coniferous species in northern and central China. For understanding its adaptive evolution in needle traits, the needle samplings of 10 geographic populations were collected from a 30yr provenience common garden trail that might eliminate site environment effect and show genetic variation among populations and 20 needle morphological and anatomical traits were involved. The results showed that variations among and within populations were significantly different over all the measured traits and the variance components within population were generally higher than that among populations in the most measured needle traits. Population heritabilities in all measured traits were higher than 0.7 in common garden sampling among populations. Needle traits were more significantly correlated with longitude than other factors. First five principal components accounted for 81.6% of the variation with eigenvalues greater than 1; the differences among populations were mainly dependent on needle width, stomatal density, section areas of vascular bundle, total resin canals, and mesophyll, as well as area ratio traits. Ten populations were divided into two categories by Euclidean distance. Variations in needle traits among the populations have shown systematic microevolution in terms of geographic impact on P. tabuliformis. This study would provide empirical data to characterize adaptation and genetic variation of P. tabuliformis, which should be more available for ecological studies.

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“…8B). When investigating a structure such as a needle trace (Pensa et al 2004), many difficulties can be experienced in sampling the material by serial physical sectioning. However, when sectioning is done virtually during the processing and display of MRM data, the position of a needle trace becomes quite clear.…”

Section: ) Examination Of Beech Xylem By 3d Mrmmentioning

confidence: 99%

Application of 3D magnetic resonance microscopy to the anatomy of woody tissues

Oven¹,

Merela²,

Mikac³

et al. 2011

IAWA J

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We demonstrate the use of high-resolution three-dimensional magnetic resonance microscopy (3D MRM) for anatomical studies of woody tissues. Samples of normal and pathological structures in the branches of four tree species were imaged by 3D MRM immediately after removal from the tree, without additional tissue preparation. MRM data sets were displayed in 2D sections and in a 3D volume rendered mode. Good image contrasts between identical anatomical structures in different tree species suggest that 3D MRM may be a promising method in comparative wood anatomy. MRM can be used for general morphological observations, as well as for positioning and examination of a particular portion of tissue in the investigated object. This is demonstrated by examples of a needle trace within the xylem in Norway spruce and by localisation of the protection zone at the base of a dead branch in beech. Visualisation of a wound scar in beech demonstrates the efficiency of 3D MRM in revealing the spatial dimensions of any moisture-related structural defects within wood. It can provide relatively high and isotropic resolution, thus enabling non-destructive and accurate determination of the moisture content of any wood structure. High-resolution 3D MRM has great potential in studying the anatomy of woody plants due to the non-destructive nature of the technique, the simplicity of tissue preparation and very versatile information retrieval by choosing an appropriate MRM method and its parameter set.

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Variation in needle-trace diameter in respect of needle morphology in five conifer species

Cited by 7 publications

References 29 publications

Variability of morpho-anatomical features of black pine needles at the area of Jastrebac and Goč

Variability of morpho-anatomical features of black pine needles at the area of Jastrebac and Goč

Genetic Analysis of Needle Morphological and Anatomical Traits among Nature Populations of Pinus Tabuliformis

Application of 3D magnetic resonance microscopy to the anatomy of woody tissues

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