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9 results for “andromonoecy”
Data from: Intersexual flower differences in an andromonoecious species: small pollen‐rich staminate flowers under resource limitation
<p>Data archived here were used for analyses in Murakami et al. "Intersexual flower differences in an andromonoecious species: small pollen‐rich staminate flowers under resource limitation." Data is in three worksheets.</p>
Data from: Is increased male flower production a strategy for avoidance of predispersal seed predation in andromonoecious plants?
<p>Floral gender in angiosperms often varies within and among populations. We conducted a field survey to test how predispersal seed predation affects sex allocation in an andromonoecious alpine herb <i>Peucedanum multivittatum</i>. We compared plant size, male and perfect flower production, fruit set, and seed predation rate over three years among nine populations inhabiting diverse snowmelt conditions in alpine meadows. Flowering period of individual populations varied from mid-July to late August reflecting the snowmelt time. Although perfect flower and fruit productions increased with plant size, size-dependency of male flower production was less clear. The number of male flowers was larger in the early-flowering populations, while the number of perfect flowers increased in the late-flowering populations. Thus, male-biased sex allocation was common in the early-flowering populations. Fruit-set rates varied among populations and between years, irrespective of flowering period. Fruit-set success of individual plants increased with perfect flower number, but independent of male flower number. Seed predation by lepidopteran larvae was intense in the early-flowering populations, whereas predation damage was absent in the late-flowering populations, reflecting the extent of phenological matching between flowering time of host plants and oviposition period of predator moths. Seed predation rate was independent of male and perfect flower numbers of individual plants. Thus, seed predation is a stochastic event in each population. There was a clear correlation between the proportion of male flowers and the intensity of seed predation among populations. These results suggest that male-biased sex allocation could be a strategy to reduce seed predation damage but maintain the effort as a pollen donor under intensive seed predation.</p>
Figure 1 from: Lacey LM, Cantley JT, Martine CT (2017) Solanum jobsonii, a novel andromonoecious bush tomato species from a new Australian national park. PhytoKeys 82: 1-13. https://doi.org/10.3897/phytokeys.82.12106
Figure 1 - Principal components analysis score plot (Fig. 1a, left) and loading plot (Fig. 1b, right) of characters and species in Table 1. Most heavily weighted characters labeled and indicated with red arrows in loading plot. Red triangles = S. jobsonii; black crosses = S. eburneum; purple circles = S. diversiflorum; yellow diamonds = S. watneyi. Labels for loading plot are as follows: A Apical leaf depth of lobing B Basal leaf width C Basal leaf depth of lobing D Stem prickle length E Hermaphrodite calyx lobe length F Staminate calyx lobe length G Basal leaf length H Male corolla diameter I Hermaphrodite corolla diameter J Apical leaf length K Apical leaf surface area L Petiole length M Internode length N Apical leaf width O Plant height P Fruiting pedicel length Q Seed length.
Figure 3 from: Lacey LM, Cantley JT, Martine CT (2017) Solanum jobsonii, a novel andromonoecious bush tomato species from a new Australian national park. PhytoKeys 82: 1-13. https://doi.org/10.3897/phytokeys.82.12106
Figure 3 - Geographic distribution of S. watneyi, S. eburneum, S. diversiflorum, and S. jobsonii in eastern Western Australia and the Northern Territory, Australia, based on specimens held at the Northern Territory Herbarium Palmerston (DNA).
Figure 2 from: Lacey LM, Cantley JT, Martine CT (2017) Solanum jobsonii, a novel andromonoecious bush tomato species from a new Australian national park. PhytoKeys 82: 1-13. https://doi.org/10.3897/phytokeys.82.12106
Figure 2 - Solanum jobsonii Martine, J.Cantley, and L.M.Lacey and related species. A Typical habitat in clay soils with limestone stones and laterite pebbles, Limmen National Park, NT B S. jobsonii in flower and C in mature fruit D Corolla comparisons of staminate (upper) and hermaphrodite (lower) flowers for S. jobsonii (left) and S. diversiflorum (right) E Leaf shape across varying leaf ages for S. jobsonii (top) and S. diversiflorum (bottom) F S. jobsonii immature fruit with armed calyx G Corolla comparisons of staminate (upper) and hermaphrodite (lower) flowers for S. eburneum (left) and S. watneyi (right) H Leaf shape across varying leaf ages for S. watneyi (top) and S. eburneum (bottom) I Seed size, shape, and color comparisons from left to right – S. jobsonii, S. diversiflorum, S. eburneum, and S. watneyi J S. jobsonii trichome density of apical adaxial leaf surface (top) and apical abaxial leaf surface (bottom). Photos A, B, C, F, G by J.T. Cantley; H by E.S. Frawley; D, E, I, J by L.M. Lacey. Yellow scale bars: B, D, F, G = 1.5 cm; C = 5 cm; E, H = 2.25 cm; I = 8 mm; J = 1.5 mm.
Data from: The advantage of male-biased flower production in andromonoecious plants under intensive predispersal seed predation
<p><span>1) Not only mutualistic plant–pollinator interactions but also antagonistic plant–herbivore interactions can be a selective force on sex allocation in angiosperms. In this study, we investigate how predispersal seed predation affects the reproductive success and floral gender of andromonoecious herbs on a natural snowmelt gradient.</span></p> <p><span>2) The developing fruits of an alpine herb (<em>Peucedanum</em> <em>multivittatum</em>: Apiaceae) were intensively predated by lepidopteran larvae (<em>Phaulernis</em> <em>fulviguttella</em>: Epermeniidae) in the early-snowmelt populations, where flowering occurred from mid to late July. In the late-snowmelt populations, where flowering occurred after early August, seed predation was negligible due to the oviposition of the predator moths being concentrated in early summer. The moths tended to oviposit on plants with more perfect flowers and taller inflorescences, whereas the number of male flowers was independent of their oviposition preference. </span></p> <p><span>3) Responding to the oviposition behavior, the proportion of male flowers was the largest and floral stems were the shortest in the early-snowmelt population suffering from intensive predation damage. The contribution of perfect flowers to intact seed production significantly decreased with earlier flowering along the snowmelt gradient. Fitness measurements using genetic markers revealed that the increase in flower number resulted in greater success as a pollen donor within a population. Thus, plants can ameliorate the risk of predation damage to sired seeds by wider pollen dispersal. </span></p> <p><span>4) Synthesis: Taken together, the greater production of male flowers at the expense of perfect flowers is advantageous under intensive predation pressure owing to the reduction of predation damage (female fitness) and the improvement of siring success (male fitness). These results revealed that predispersal seed predation acts as a selective force that promotes male-biased sex allocation in andromonoecious plants.</span></p>
Data from: Is increased male flower production a strategy for avoidance of predispersal seed predation in andromonoecious plants?
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Data from: The advantage of male-biased flower production in andromonoecious plants under intensive predispersal seed predation
Open the record for dataset details and reuse information.
Expression data from Andromonoecious poplar flower
GEO Series GSE38432. Populus tomentosa; Populus sp.. 4 samples. Type: Expression profiling by array.
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