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61 results for “Juglans regia”
Juglans regia L. (BR0000012083633)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Data from: Population differentiation in common walnut (Juglans regia L.) across major parts of its native range - insights from molecular and morphometric data
Juglans regia is an economically highly important species for fruit and wood production in the warm temperate and subtropical zones of the Northern Hemisphere. Besides the natural influence of climatic and geomorphological barriers, its genetic structure has been strongly modified by humans and the population history is still unclear. For this reason, we investigated mainly natural walnut populations across the Eurasian continent on a molecular (44 populations, 581 trees) and morphometric level (23 populations, 1391 ripe nuts). Population genetic diversity and differentiation were examined by using 7 microsatellite loci. Morphometric characteristics of the nuts (mainly roundness index and nut density) were used to estimate trait variation and population differentiation. Highest allelic richness Rs12 = 7.05 was observed in a Pakistani and the lowest value Rs12 = 3.04 in a Kyrgyz population. The genetic differentiation among populations was high (FST = 0.217; RST = 0.530) indicating a strong phylogeographic pattern. While variation of the roundness index within single populations was high, this trait neither differentiated geographical regions nor was it associated to genetic clusters. Approximated QST based on this trait equalled FST, while approximated QST based on nut density considerably exceeded FST, indicating selection. Nut density was moderately correlated with altitude, latitude, and longitude, and differentiated populations according to their origin. Pakistani and Indian populations showed highest nut densities. These South Asian populations contain putatively ancestral nut forms, which probably have been lost in other populations as a consequence of human selection.
FIGURE 1 in A novel species of Loculosulcatispora (Sulcatisporaceae, Pleosporales) on Juglans regia from Sichuan, China
FIGURE 1. Maximum likelihood (RAxML) tree based on a combined dataset of SSU, LSU, ITS, rpb2, and tef1-α sequences. Bootstrap support values for ML (MLBP) equal to or greater than 75% and Bayesian posterior probabilities (BYPP) equal to or greater than 0.95 are shown as ML/BYPP above the nodes. The holotype materials are symbolized with T. The new isolate is in bold. The scale bar represents the expected number of nucleotide substitutions per site.
FIGURE 2 in A novel species of Loculosulcatispora (Sulcatisporaceae, Pleosporales) on Juglans regia from Sichuan, China
FIGURE 2. Loculosulcatispora juglans (SICAU 22-0078, holotype). a, b Appearance of ascomata on dead host. c, d Vertical section of ascomata. e Ostiole. f Peridium. g Hamathecium interwoven with asci and pseudoparaphyses. h–j Asci. k Asci stained by Melzer's reagent. l–o Ascospores. p Germinating ascospores in sterilized water. q, r Culture characters on PDA. Scale bars: b = 1 mm, c = 500 µm, d = 100 µm, e = 50 µm, f–k = 20 µm, p = 10 µm, l–o = 5 µm.
FIGURE9 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE9. Maximum Parsimony tree of Juglans regia species based on ITS sequences (Populations 1–7 are according to Table 1). Values above branches are bootstrap value.
FIGURE 8 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE 8. TCS Network of Juglans regia cultivars based on nrDNA ITS sequences (Populations 1–7 are according to Table 1). Culivars of Iran (Red colored) are differentiated from Italian cultivars (blue colored).
FIGURE7 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE7. UPGMA tree of Juglans regia cultivars based on nrDNA ITS sequences (Populations 1–7 are according to Table 1).
FIGURE6 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE6. PCoA of SRAP data after 1000 times permutation in the studied Persian walnut populations (Populations 1–7 are according to Table 1).
FIGURE5 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE5. STRUCTURE plot of the studied Persian walnut populations based on k = 2 (Populations 1–7 are according to Table 1).
FIGURE4 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE4. UPGMA plot of ISSR data in Persian walnut populations (Populations 1–7 are according to Table 1).
FIGURE3 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE3. PCA biplot of morphological characters in Persian walnut populations studied (Populations 1–7 are according to Table 1)
FIGURE2 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE2. UPGMA dendrogram of morphological characters in Persian walnut populations studied (Populations 1–7 are according to Table 1).
FIGURE1 in Population genetic study in Juglans regia L. (Persian walnut) and its taxonomic status within the genus Juglans L.
FIGURE1. Distribution map of the studied J. regia wild and cultivated populations (Populations code are according table1).
Data from: Population differentiation in common walnut (Juglans regia L.) across major parts of its native range - insights from molecular and morphometric data
Open the record for dataset details and reuse information.
Juglans regia L. (BR0000012083558)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Juglans regia L. (BR0000012083695)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Juglans regia L. (BR0000009464889)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Data from: Cascading effects of changes in land use on the invasion of the walnut Juglans regia in forest ecosystems
Open the record for dataset details and reuse information.
Genome-wide identification and characterization of long non-coding RNAs conferring resistance to Colletotrichum gloeosporioides in walnut (Juglans regia)
GEO Series GSE147083. Juglans regia. 30 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Identification and Comparative Analysis of Genes and MicroRNAs Involved in the Floral Transition of the Xinjiang Early-Flowering Walnut (Juglans regia L.)
GEO Series GSE193061. Juglans regia. 12 samples. Type: Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing.
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