Find research datasets worth reusing

opencc-by-4.0Oct 2022View details →

Figure 6 in Effect of water stress on weed germination, growth characteristics, and seed production: a global meta-analysis

Figure 6. Density plots depicting the distribution of the individual effect sizes for all 12 response variables considered in this meta-analysis: (A) weed seed germination/emergence; (B) radicle/root length, plant height, and leaf area; (C) branches/tillers per plant, leaves per plant, inflorescences per plant, and seeds per plant; and (D) total biomass, root biomass, shoot biomass, and root:shoot ratio.

opencc-by-4.0Oct 2022View details →

Figure 2 in Effect of water stress on weed germination, growth characteristics, and seed production: a global meta-analysis

Figure 2. Overall water-stress effects on weed germination/emergence, growth characteristics, and seed production. The vertical black dashed line represents zero effect. The black dots are overall mean effect sizes, and the black lines are 95% confidence intervals (CIs). The values in parentheses are the number of observations followed by the number of studies for each pair-wise comparison. The mean effect sizes were considered significantly different when their 95% CIs did not include zero.

opencc-by-4.0Oct 2022View details →

Figure 5 in Effect of water stress on weed germination, growth characteristics, and seed production: a global meta-analysis

Figure 5. The log response ratio for weed growth characteristics (plant height, leaf area, branches/tillers per plant, leaves per plant,root biomass, shoot biomass, and root:shoot ratio) and seed production (inflorescences per plant and seeds per plant) as a function of water-stress intensity. Water stress increased as soil moisture (% field capacity) decreased and vice versa. The green and red dots represent broadleaf and grass weed species, respectively. The solid black points and the lines represent mean effect sizes and their 99% confidence intervals (CIs) for low (>60%), moderate (30%–60%), and severe (<30% field capacity) water-stress subgroups. The mean effect sizes were considered significantly different when their 99% CIs did not include zero. Similarly, the water-stress effects were significantly different for each subgroup and among weed types only when their 99% CIs did not overlap with one another.

Figure 5 in Under pressure: maternal effects promote drought tolerance in progeny seed of Palmer amaranth (Amoronthus polmeri)

Figure 5. Shifts in distribution of base water potential of progeny seeds from two Amoronthus polmeri populations (California and Kansas) grown under contrasting maternal water conditions (continuous̜ ̜ ̹ water-deficit ̹ vs. well-watered). Seed germination was tested at two temperatures (20 and 30 C) under five water potentials. A hydrotime model, ̜ ̹ θ Equation 3, g w,t¼ Φ w ― H w,σ, was fit to estimate the median base water potentials, w (vertical dashed lines), and their respective standard deviations, σ, g tg bð50Þ wb bð50Þ wb to produce these probability density curves of normal distribution (see Table 1 for parameter estimates). Note that the area under the curve for base water potential values>0 indicates the proportion of seeds that have not germinated (i.e., dormancy level).

Figure 1 in Under pressure: maternal effects promote drought tolerance in progeny seed of Palmer amaranth (Amoronthus polmeri)

Figure 1. Plant height for Amoronthus polmeri populations (California and Kansas) grown under continuous water-deficit or well-watered irrigation conditions. Vertical lines on bars indicate SE.

Figure 4 in Under pressure: maternal effects promote drought tolerance in progeny seed of Palmer amaranth (Amoronthus polmeri)

Figure 4. The effect of maternal water conditions (continuous water-deficit vs. well-watered) on cumulative germination of progeny seeds in two Amoronthus polmeri populations (California and Kansas) tested under various water potentials at 30 C. Lines are fitted values obtained from the hydrotime model, Equation 3, ̜ ̹ ̜ ̜ ̹ ̹ g w,t¼ Φ w ― θH,w,σ, with parameter estimates shown in Table 1. g tg bð50Þ wb

Figure 3 in Under pressure: maternal effects promote drought tolerance in progeny seed of Palmer amaranth (Amoronthus polmeri)

Figure 3. The effect of maternal water conditions (continuous water-deficit vs. well-watered) on cumulative germination of progeny seeds in two Amoronthus polmeri populations (̜ California̜ ̹ and Kansas̹) tested under various water potentials at 20 C. Lines are fitted values obtained from the hydrotime model, Equation ̜ ̹ θ 3, g w,t¼ Φ w ― H, w, σb, with parameter estimates shown in Table 1. g tg bð50Þ w

Figure 2 in Under pressure: maternal effects promote drought tolerance in progeny seed of Palmer amaranth (Amoronthus polmeri)

Figure 2. Differences in 1,000-seed weight, seed surface area, and total germination (dormancy) of progeny seeds from two Amoronthus polmeri populations (California and Kansas) grown under continuous water-deficit (WD) or well-watered (WW) irrigation conditions. Vertical bars on data points indicate SE.

Fig. 7 in Preliminary larvicidal effect of seed oil from Cleome arabica L. on fifth instar larvae of Schistocerca gregaria (Orthoptera: Acrididae)

Fig. 7. Variation of the weight compared to the initial weight of L5 larvae of control S. gregaria and treated with C. arabica seed oil.

Fig. 2 in Preliminary larvicidal effect of seed oil from Cleome arabica L. on fifth instar larvae of Schistocerca gregaria (Orthoptera: Acrididae)

Fig. 2. Variation over time of mortality rate observed in control L5 larvae treated with C. arabica seed oil.

Fig. 1 C-D in Preliminary larvicidal effect of seed oil from Cleome arabica L. on fifth instar larvae of Schistocerca gregaria (Orthoptera: Acrididae)

Fig. 1 C-D. Cleome arabica at fruiting stage (Oued Metlili, Region of Ghardaïa-Northern Algerian Sahara, April 2020). C) Fruiting brunches. D) Fruiting close-up.

Fig. 1 A-B in Preliminary larvicidal effect of seed oil from Cleome arabica L. on fifth instar larvae of Schistocerca gregaria (Orthoptera: Acrididae)

Fig. 1 A-B. Cleome arabica at fruiting stage (Oued Metlili, Region of Ghardaïa-Northern Algerian Sahara, April 2020). A) Whole plant. B) Seed.

Fig. 5 A-B in Preliminary larvicidal effect of seed oil from Cleome arabica L. on fifth instar larvae of Schistocerca gregaria (Orthoptera: Acrididae)

Fig. 5 A-B. Morphological abnormalities observed in L5 muer larvae of S. gregaria treated with C. arabica seed oil.

Fig. 4 A-B. Dead L5 in Preliminary larvicidal effect of seed oil from Cleome arabica L. on fifth instar larvae of Schistocerca gregaria (Orthoptera: Acrididae)

Fig. 4 A-B. Dead L5 larvae following the inability to molt observed in S. gregaria L5 treated with C. arabica seed oil.

opencc-by-4.0Aug 2017View details →

Figs. 1 A, B. A. Richness and B in Influence of the Edge Effect on A Soil Seed BAnk of A NAturAl FrAgment in the AtlAntic Forest

Figs. 1 A, B. A. Richness and B. abundance of the soil seed bank in relation to the edge from Mata Grande of the PEI.

opencc-by-4.0Aug 2017View details →

Fig. 3 in Influence of the Edge Effect on A Soil Seed BAnk of A NAturAl FrAgment in the AtlAntic Forest

Fig. 3 NMDS of the composition of the soil seed bank differences in distances from the edge from Mata Grande of the PEI.

opencc-by-4.0Aug 2017View details →

Figs. 2 A, B. A in Influence of the Edge Effect on A Soil Seed BAnk of A NAturAl FrAgment in the AtlAntic Forest

Figs. 2 A, B. A Linear regression of the richness and B. abundance of the soil seed bank in relation to the edge from Mata Grande of the PEI (y=Ax+B).

dryad40/100

Simulated pollinator decline has similar effects on seed production of female and hermaphrodite Lobelia siphilitica, but different effects on selection on floral traits

PREMISE: Pollinator decline, by reducing seed production, is predicted to strengthen natural selection on floral traits. However, the effect of pollinator decline on gender dimorphic species (such as gynodioecious species, where plants produce female or hermaphrodite flowers) may differ between the sex morphs: if pollinator decline reduces the seed production of females more than hermaphrodites, then it should also have a larger effect on selection on floral traits in females than in hermaphrodites. RESULTS: Experimentally reducing pollination decreased seed production of both females and hermaphrodites by ~21%. Reducing pollination also strengthened selection on floral traits, but this effect was not larger in females than in hermaphrodites. Instead, reducing pollination intensified selection for taller inflorescences in hermaphrodites, but did not intensify selection on any floral trait in females. CONCLUSIONS: Our results suggest that pollinator decline will not have a larger effect on either seed production or selection on floral traits of female plants. As such, any effect of pollinator decline on seed production may be similar for gender dimorphic and monomorphic species. However, the potential for floral traits of females (and thus of gender dimorphic species) to evolve in response to pollinator decline could be limited.

opencc-zeroNov 2022View details →

opencc-by-4.0Mar 2023View details →

Effects of Charring on Squash (Cucurbita L ) Seed Morphology and Compression Strength: Implications for Paleoethnobotany Metric Data

Metric data resulting from a series of charring experiments on seeds from three species of squash: Cucurbita pepo, Cucurbita moschata, and Cucurbita maxima.