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RISS 인기검색어
- 검색키워드
- 저자 : Loko Yêyinou Laura Estelle (검색결과 2 건)
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Yêyinou Laura Estelle Loko,David Montcho,Martine Zandjanakou-Tachin,Azize Orobiyi,Joelle Toffa,Elodie Hounmakou,Dieudonné Gavoedo,Alexandre Dansi 한국작물학회 2020 Journal of crop science and biotechnology Vol.23 No.3
Peanut ( Arachis hypogaea L.) is one of the major oilseed legumes contributing to food security in Benin. Unfortunately, several constraints hamper its production leading to a low yield. A good knowledge of on-farm management of peanut diversity and uses that allow its maintenance in traditional Beninese agriculture are prerequisites to establish an effi cient breeding programme. Therefore, this study aims to document peanut varietal diversity, folk nomenclature, seed system, storage constraints, pest management practices, varietal preference criteria, cultural taboos and uses in southern and central Benin. Two hundred and sixteen farmers were surveyed through 32 villages in southern and central Benin using rural appraisal tools. Fifty-four peanut local varieties grouped into eight morphotypes based on the seed characteristics were registered. The number of local varieties maintained per village ranged from 1 to 11 and varied between 1 and 4 per household. The drop in yield was the main reason of peanut varietal abandonment. Rodent attacks were the most important constraints of peanut production. Varietal preference criteria varied from ethnic groups with seed size and many pod/seeds per plant as the main preferred traits. Peanut seed system was mainly informal. To alleviate pest problems in stored peanut, producers used biocidal plants and synthetic chemicals. Some cultural taboos and various uses of peanuts have been recorded. Our results suggest that for boosting peanut production in central and southern Benin, breeders must create high-yielding peanut varieties. However, it is important to take into account the preference varietal criteria of each ethnic group for their adoption. For a good estimation of peanut diversity in the study area, morphological and molecular characterizations were recommended.
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Loko Yêyinou Laura Estelle,Toffa Joelle,Bada Baptista,Dassou Gbèblonoudo Anicet,Zanzana Karimou,Gavoedo Dieudonné,Adikpeto Josky,Tamo Manuele 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2
The beetle Dinoderus porcellus Lesne is a serious storage insect pest that causes important losses by destroying stocks of yam chips. In the aim to found an alternative control method to the use of synthetic insecticides for its management, the virulence of the entomopathogenic fungi Beauveria bassiana (Balsamo) Vuillemin (isolate Bb115) and Metarhizium anisopliae (Metschnikoff) Sorokin (isolate Met 31) against adults of D. porcellus was evaluated under laboratory conditions (25 ± 2 ◦ C and 70 ± 5% RH). Then, the effectiveness of the most virulent entomopathogenic fungus as biological agent against D. porcellus was assessed under farmer storage conditions. For each entomopathogenic fungus isolate, four conidial concentration (0, 10 5 , 10 7 , and 10 9 conidia/mL) at the dose of 1 µL were inoculated topically on D. porcellus adults (3–5 days old). Observations focused on insect mortality, cadaver sporulation and weight loss of yam chips. Lethal dose and lethal time values were estimated using probit analysis. Both fungal isolates at all conidial dose caused more than 50% mortality on day 7, with the highest mortality (94.44%) achieved using B. bassiana at the 10 9 conidia/mL. LT 50 values for B. bassiana and M. anisopliae isolates were 2.63 and 3.35 days, respectively, while their LT 90 values were 6.15 and 9.87 days, respectively. Yielding the lower LD 90 values and the highest rates of cadaver sporulation, B. bassiana isolate appeared as the most virulent against D. porcellus. After 3 months of storage, comparatively to the control, the B. bassiana isolate at the highest conidial dose (10 9 conidia/mL) significantly reduced D. porcellus populations, and weight loss of yam chips. This study revealed the potential of B. bassiana and M. anisoplae isolates as bio logical control agent against D. porcellus for yam chips protection
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