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Control of Ascochyta blight of Chickenpea using Essential Oils from Thyme ( Thymus vulgaris ) , Sage ( Salvia officinalis L . ) and Rosemary ( Rosmarinus officinalis L . )
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2018 |
| Abstract | Chick pea is considered as the most important sources of cheap protein. However, the crop is endangered by a number of fungal diseases. Top in the list of these fungal diseases is ascochyta blight. This study was aimed at testing the sensitivity of Ascochyta rabiei to essential oils from thyme, sage and rosemary plant. Infected chick pea plant samples were collected from field seven in Egerton University. Fungal pathogens were isolated from the infected plants. Essential oils were extracted from thyme, sage and rosemary plant. Sensitivity of Ascochyta rabiei against extracted different essential oils was carried out, using agar well technique. The prevalence of Ascochyta rabiei in the plant samples from chick pea was 50%. The most active fungal pathogens were Alternaria spp. (45%), Aschochyta rabiei (50%), Fusarium spp. (22%), and Penicillium spp. (16%) and Coletotrichum spp. (17%). There was a relationship in between yield of essential oils and heating time in rosemary (r=0.99) and leaves (r=0.99). Generally, no significant difference in the %yield of essential oils thyme, sage and rosemary (P=0.057) was seen. The percentage yield of essential oils ranged from β-Caryophyllene (1.9%) to Carvacrol (19.9%) in thyme; cisThujone (2.3%) to Camphenilone (25.2%) in sage and α-terpineol (2.5%) to Comphor (34.7%) in rosemary. The zone of inhibition in essential oils which was obtained from thyme against Ascochyta rabiei was 20 mm, sage (17 mm) and rosemary (19 mm). The minimum inhibition of essential oils from thyme leaves was 125 ± 0.02 mg/ml, sage (250 ± 0.01 mg/ml) and rosemary (250 ± 0.02 mg/ml). The essential oils from thyme, sage and rosemary have bioactive compounds that have antifungal properties against Ascochyta rabiei. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.omicsonline.org/pdfdownload.php?aid=104444&download=open-access-pdfs/control-of-ascochyta-blight-of-chickenpea-using-essential-oils-from-thyme-thymus-vulgaris-sage-salvia-officinalis-l-and-rosemary-r-2472-1212-1000176.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |