Morphometric characterisation ofScutellonema bradyspopulations from the Guinea Savanna and Transitional Rain Forest ecological zones of Ghana
| Autor: | Eric Cornelius, Yahaya Saaka Jamani, Seloame T. Nyaku, Hanif Lutuf |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Veterinary medicine Ecology biology Agroforestry Morphological variation Soil Science Sampling (statistics) Parasitism Agglomerative hierarchical clustering Plant Science Rainforest biology.organism_classification 01 natural sciences 010602 entomology Nematode meteorology.tropical_cyclone Scutellonema bradys meteorology Dioscorea 010606 plant biology & botany |
| Zdroj: | South African Journal of Plant and Soil. 35:187-197 |
| ISSN: | 2167-034X 0257-1862 |
| DOI: | 10.1080/02571862.2017.1354404 |
| Popis: | Yam (Dioscorea spp.) forms a large portion of Ghanaian diets and is cultivated in most regions. However, yam is highly susceptible to parasitism by the yam nematode, Scutellonema bradys. Ten major yam communities from 10 districts (Yendi, Karaga, East Gonja, Kumbungu, Savelugu/Nanton, Kintampo North, Techiman, Wenchi, Atebubu/Amanten and Ejura/Sekyeredumase) were selected for soil and yam tuber sampling. Body lengths ranged from 624.6 to 858.5 µm, and 609.5 to 854.1 µm for female and male S. bradys populations, respectively. Tail lengths ranged from 5.3 to 9.6 µm, and 5.2 to 8.6 µm for female and male S. bradys populations, respectively. Principal component analysis did not reveal distinct groups among the female and male populations. This was further confirmed through agglomerative hierarchical clustering with subgroupings showing less than 20% dissimilarity for both female and male populations, and nematodes from different locations clustered together. Significant morphological variation therefore exist... |
| Databáze: | OpenAIRE |
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