Effect of water content on the germination characteristics of Trichosanthes cucumerina, Momocardia charantia and Abelmoschus esculentus seeds

Razeek, Nirosha; Sittampalam, Thananthika; Ranganathan, Kannan

doi:10.7324/jabb.2016.40502

Cited by 2 publications

(2 citation statements)

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“…In a similar study by Wilson and Witkowski (1998), comparable patterns of water treatment resulted in higher seed germination of Acacia karoo and suggested certain patterns of water availability causes loss of Acacia seed viability (Wilson and Witkowski, 1998). In other studies, intermediate moisture stimulated seed germination, presumably because too little water limited germination and too much water inhibited germination (Razeek et al, 2016).…”

Section: Seed Germination and Seedling Growth Under Irrigation Treatmentmentioning

confidence: 82%

“…The germination trays were placed inside a wooden cage covered by a polythene net to provide slight shade and exclude rainfall and potential seed predators (Fay et al, 2000;O'Brien et al, 2013). During the course of the experiment, average recorded temperature was 24.1 o C. Starting seven days after planting (Razeek et al, 2016;Wilson and Witkowski, 1998), seedlings were monitored daily for germination (radicle emergence), mortality and seedling development over 35 days, and seedling shoot height data were collected after every seven days. At the end of the experiment, total length of each seedling root and shoot was measured and recorded.…”

Section: Irrigation Experimentsmentioning

confidence: 99%

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Encroachment dynamics of Acacia drepanolobium in Maswa game reserve

Kimaro¹

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Habitat degradation, caused in particular by woody plant encroachment, has been a common phenomenon in savanna ecosystems. With increasing woody plant cover in open savanna grassland, structural changes and their associated impact need to be assessed and quantified. We analyzed the extent of woody plant encroachment via remote sensing and assessed encroached sites and open grassland of Maswa Game Reserve on the ground to identify and examine encroaching woody plant species and their associated impacts on herbaceous plant and herbivore species. We found that woody plant cover increased by 0.5% to 2.6% per annum. Acacia drepanolobium dominated the woody encroaching species, and the number of stems in heavily encroached sites was seven times and three times higher than in open grassland and at medium encroached sites, respectively. Our results show that woody plant encroachment reduces grazers and mixed feeder species occurrence. Furthermore, the number of herbaceous species slightly increased with increase of woody plant encroachment, while herbaceous cover was negatively correlated with increase of woody plant cover. Fire significantly reduced germination success of A. drepanolobium. Intermediate simulated rainfall was more beneficial to seedling emergence success than infrequent simulated rainfall, while seedling shoots growth was significantly higher in frequent and intermediate simulated rainfall treatments than under infrequent simulated rainfall. Hence, our study suggests that the recent bush encroachment phenomena might have been stipulated by suppression of bush fires and frequent low rainfall. This understanding will contribute in management of vegetation specifically woody plants in savanna ecosystems that are important wildlife habitats.

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Section: Seed Germination and Seedling Growth Under Irrigation Treatmentmentioning

confidence: 82%