Effect of Seed Size on Germination, Emergence, Growth and Seedling Survival of Senna occidentalis Link.

Saeed, Samreen; Shaukat, Syed Shahid

doi:10.3923/pjbs.2000.292.295

Cited by 15 publications

(6 citation statements)

References 31 publications

(37 reference statements)

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“…This interference may be particularly important in plants with a higher degree of pollinator specialization, such as some Ferocactus species, whose flowers are pollinated almost exclusively by cactus-specialist bees like Diadasia rinconis (McIntosh, 2005). Our study found that the reduction in the number and size of seeds produced by flowers visited by ants may be associated with a lower rate of bee visits, resulting in less pollen deposition on flower stigmas and ultimately reducing the number of seeds produced, as well as their size and weight, traits associated with seed germination and survival (Saeed & Shaukat, 2017).…”

Section: Impact On Plant Pollination and Fitnessmentioning

confidence: 60%

The Distraction Function of Extrafloral Nectaries: Keeping Ants Away From Flowers and Preventing Disruption of Pollination

Sandoval Molina,

González-Camarena,

Rosas-Sánchez

et al. 2024

Preprint

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In exchange for extrafloral nectar, ants deter herbivores from the plants, reducing the amount of herbivory they suffered. However, this defensive mutualism can sometimes have negative effects on plants, as ants may also visit flowers, deterring pollinators and reducing plant fitness. The Distraction Hypothesis posits that extrafloral nectaries (EFNs) have the function of attracting ants and preventing them from visiting flowers and disrupting pollination. In the present study, we tested this hypothesis in the field by conducting an ant-exclusion experiment in Ferocactus recurvus plants. First, we evaluated the effect of ants on pollination. Then, we tested the predictions of the Distraction Hypothesis. Specifically, we hypothesized that ants have a negative effect on plant pollination and that EFNs function to distract ants, keeping them away from flowers and preventing them from disrupting pollination. According to our hypothesis, we found that ant visits to flowers resulted in a decrease in seed production and overall plant fitness. Flowers with ants had fewer seeds and were smaller in size compared to ant-excluded flowers. In accordance with the Distraction Hypothesis, we found that a higher number of EFNs reduced the probability of finding ants on flowers. To minimize ant-pollinator conflict, F. recurvus plants produce EFNs with higher sucrose concentrations, which effectively keep ants away from the flowers. Plant width was found to be positively correlated with the number of EFNs and flowers, and there is an “optimal” number of EFNs that attracts a higher number of ants. Overall, our findings highlight the complex and dynamic nature of interactions between plants, ants, and pollinators, and the potential trade-offs that exist between ant protection and pollinator attraction.

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Section: Impact On Plant Pollination and Fitnessmentioning

confidence: 60%

The Distraction Function of Extrafloral Nectaries: Keeping Ants Away From Flowers and Preventing Disruption of Pollination

Sandoval Molina,

González-Camarena,

Rosas-Sánchez

et al. 2024

Preprint

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“…McKersie, et al [27], noted that larger seed sizes of bird's-foot trefoil improved field establishment. Similarly, Saeed and Shaukat [28] observed that large Senna occidentalis seeds had a higher germination rate, longer seedling roots and shoots than small seeds. Mao, et al [29], noted that large seed had higher 1000-seed weight and soluble sugar concentration and exhibited higher germination index, vigor index, and seedling biomass than small seeds.…”

Section: Resultsmentioning

confidence: 81%

Correlations Among Grain Mold Severity, Seed Weight, and Germination Rate of Sorghum Association Panel Lines Inoculated With Alternaria alternata, Fusarium thapsinum, and Curvularia lunata

Prom¹,

Ahn²,

Isakeit³

et al. 2021

JAC

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The sorghum association panel was evaluated for grain mold severity, seed weight, and germination rate. The 377 accessions were inoculated with Alternaria alternata alone, a mixture of A. alternata, Fusarium thapsinum, and Curvularia lunata, and untreated water-sprayed control during 2010, 2013-2015 growing seasons at the Texas AgriLife Research Farm, Burleson County, Texas. Each accession was evaluated at least twice. Across accessions, Spearman’s rank correlation was performed for non-parametric correlation analysis for grain mold severity, seed weight, and germination rate. There were significant negative correlations between grain mold severity with seed weight and germination rate for the individual treatment and when combined. A significant positive correlation between seed weight and germination rate was observed. The results indicated that higher grain mold severity reduces both sorghum seed weight and germination rate whether deliberately inoculated with fungal pathogens or naturally infected. It can be argued that correlations from this study were more robust due to a large number of accessions from all major sorghum races used and may represent the true association among the three parameters for this pathosystem. Thus, the use of grain mold-resistant lines, resulting in sound seeds and higher germination rates is recommended.

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“…However, Siddig et al (2015) reported the increase growth parameters of faba bean like seedling length, number of leaves per plant, with an increase in seed size of faba bean. Other contradictory idea is also reported from Senna occidentalis Link by Saeed and Shaukat (2000). The found that small seed category showed lesser seedling growth while large seeds showed greater seedling growth i.e., root and shoot growth of seedlings was greater in case of large seeds.…”

Section: Effect Of Seed Size and Sowing Depth On Faba Bean Growthmentioning

confidence: 90%

“…They reported that small and large seeds had significantly the highest and least germination rates respectively. However, a contradictory result was reported Saeed and Shaukat (2000) for seed size and germination in Senna occidentalis Link. The researchers reported that seed size/weight in Senna occidentals exhibited a significant effect on seed germination and emergence percentage with large seeds showing greater germination as well as emergence percentages.…”

Section: Effect Of Seed Size and Sowing Depth On Faba Bean Germinationmentioning

confidence: 93%

Germination, growth, yield and yield component of faba bean (Vicia faba L.) as influenced by seed size and sowing depth: A review

Baye¹

2021

Int. J. Curr. Res. Biosci. Plant Biol.

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Faba bean (Vicia faba L.) is among the oldest crops in the world. Globally, it is third most important feed grain legume. Currently, 58 countries produce this bean on large scale. Probably faba beans are one of the best performing crops under global warming and climate change scenario because of its unique ability to excel under all most all type of climatic conditions coupled with its wide adoptability to range of soil environment. It is a good source of lysine rich protein and good source of levadopa (L-dopa), a precursor of dopamine, can be potentially used as medicine for the treatment of Parkinson’s disease. However, its production is very low due to a number of biotic and abiotic factors. Different agronomic practices also have an effect on germination, growth, yield and yield components of faba bean. Thus, the main objective of this seminar is to review the effect of seed size and sowing depth on faba bean production.

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Effect of Seed Size on Germination, Emergence, Growth and Seedling Survival of Senna occidentalis Link.

Cited by 15 publications

References 31 publications

The Distraction Function of Extrafloral Nectaries: Keeping Ants Away From Flowers and Preventing Disruption of Pollination

The Distraction Function of Extrafloral Nectaries: Keeping Ants Away From Flowers and Preventing Disruption of Pollination

Correlations Among Grain Mold Severity, Seed Weight, and Germination Rate of Sorghum Association Panel Lines Inoculated With Alternaria alternata, Fusarium thapsinum, and Curvularia lunata

Germination, growth, yield and yield component of faba bean (Vicia faba L.) as influenced by seed size and sowing depth: A review

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