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11 results for “Hydrocharitaceae”
Florida Coastal Biota: Posidoniaceae Zosteraceae Hydrocharitaceae Cymodoceaceae.zip
Details from [DATA-1685](<p></p>https://eol-jira.bibalex.org/browse/DATA-1685)<p></p>Four seagrass families: Posidoniaceae, Zosteraceae, Hydrocharitaceae, Cymodoceaceae Traits: conservation status, geographic distribution, geographic distribution inc…, growth habit, habitat, habitat includes, introduced range includes, latitude, longitude, native range includes, plant height, plant propagule method, planting density, threatened or endangered st.., water depth, water dissolved O2 concentration, water nitrate concentration, water O2 saturation, water phosphate concentration, water salinity, water silicate concentration, water temperature
Data from: Limited pollen dispersal, small genetic neighborhoods, and biparental inbreeding in Vallisneria americana Michx. (Hydrocharitaceae)
Premise of the study: Pollen dispersal is a key process that influences ecological and evolutionary dynamics of plant populations by facilitating sexual reproduction and gene flow. Habitat loss and fragmentation have the potential to reduce pollen dispersal within and among habitat patches. We assessed aquatic pollen dispersal and mating system characteristics in Vallisneria americana -- a water-pollinated plant with a distribution that has been reduced from historic levels. Methods: We examined pollen neighborhood size, biparental inbreeding, and pollen dispersal, based on seed paternity using the indirect paternity method KinDist, from samples of 18 - 39 mothers and 14 - 20 progeny per mother from 3 sites across 2 years. Key Results: On average, fruits contained seeds sired by 7 fathers. We found significant biparental inbreeding and limited pollen dispersal distances (0.8 - 4.34 m). However, in a number of cases correlated paternity did not decline with distance and dispersal could not be reliably estimated. Conclusions: Frequent pollen dispersal is not expected among patches, and even within patches gene flow via pollen will be limited. Limited pollen dispersal establishes genetic neighborhoods which, unless overcome by seed and propagule dispersal, will lead to genetic differentiation even in a continuous population. Unless loss and fragmentation drive populations to extreme sex bias, local pollen dispersal is likely to be unaffected by habitat loss and fragmentation per se because the spatial scale of patch isolation already exceeds pollen dispersal distances. Therefore, managing specifically for pollen connectivity is only relevant over very short distances.
FIGURE 2. Ottelia guanyangensis. A. Plant habitat. B. Plant habit and flowering plant. C. Bisexual flower with red brown sepal. D. flower individual. E in Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China
FIGURE 2. Ottelia guanyangensis. A. Plant habitat. B. Plant habit and flowering plant. C. Bisexual flower with red brown sepal. D. flower individual. E. Fruit: Hexagonal-cylindric with wings. F. Leaf: Triplinerved with obvious cross veins. G. Character of pollens by SEM.
FIGURE 1 in Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China
FIGURE 1. Location records of Ottelia guanyangensis (red stars) from Guilin city, Guangxi Province, China.
FIGURE 3 in Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China
FIGURE 3. Phylogenetic analysis of Ottelia guanyangensis and all Ottelia species in China. A. Phylogenetic tree based on nrITS sequences. B. Phylogenetic tree based on rbcL, trnK5' intron and trnS-trnG sequences. C. Phylogenetic tree based on the combined sequences from four markers. Posterior probabilities (PP> 0.90) and bootstrap values (BS> 70%) are displayed.
Data from: Limited pollen dispersal, small genetic neighborhoods, and biparental inbreeding in Vallisneria americana Michx. (Hydrocharitaceae)
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Figure 4 from: Li Z-Z, Wu S, Zhou C-Y, Liu Y, Hu G-W, Lehtonen S, Wang Q-F, Chen J-M (2019) Ottelia fengshanensis, a new bisexual species of Ottelia (Hydrocharitaceae) from southwestern China. PhytoKeys 135: 1-10. https://doi.org/10.3897/phytokeys.135.38531
Figure 4 Phylogenetic tree and PTP analysis of O. fengshanensis sp. nov. and Blyxa japonica as an outgroup. Posterior probabilities (PP > 0.70) and bootstrap values (BS > 70) based on Bayesian Inference and maximum likelihood (ML) analysis are shown above the branches.
Figure 2 from: Li Z-Z, Wu S, Zhou C-Y, Liu Y, Hu G-W, Lehtonen S, Wang Q-F, Chen J-M (2019) Ottelia fengshanensis, a new bisexual species of Ottelia (Hydrocharitaceae) from southwestern China. PhytoKeys 135: 1-10. https://doi.org/10.3897/phytokeys.135.38531
Figure 2 Ottelia fengshanensis Z.Z.Li, S.Wu & Q.F.Wang. A Habitat B flowering plant C bisexual flower with red-green sepals D individual and leaf: triplinerved with conspicuous cross veins E fruit: Hexagonal-cylindric with tiny wings F the character of pollens by SEM G spathe H seeds.
Figure 1 from: Li Z-Z, Wu S, Zhou C-Y, Liu Y, Hu G-W, Lehtonen S, Wang Q-F, Chen J-M (2019) Ottelia fengshanensis, a new bisexual species of Ottelia (Hydrocharitaceae) from southwestern China. PhytoKeys 135: 1-10. https://doi.org/10.3897/phytokeys.135.38531
Figure 1 Distribution record of Ottelia fengshanensis Z.Z.Li, S.Wu & Q.F.Wang (red triangle) from Fengshan county, Guangxi province, China.
Data from: New phylogenetic insights into Hydrocharitaceae
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Figure 3 from: Li Z-Z, Wu S, Zhou C-Y, Liu Y, Hu G-W, Lehtonen S, Wang Q-F, Chen J-M (2019) Ottelia fengshanensis, a new bisexual species of Ottelia (Hydrocharitaceae) from southwestern China. PhytoKeys 135: 1-10. https://doi.org/10.3897/phytokeys.135.38531
Figure 3 Illustration of Ottelia fengshanensis Z.Z.Li, S.Wu & Q.F.Wang. Drawn by Shuai-Jie Li.
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