Karine Moche, Champlain Djieto Lordon, Zéphirin Tadu, Didi Gaëlle Mokam, Paul Alain Nana, Zéphyrin Fokam, Noé Woin
Laboratory of Entomology, Institute of Agricultural Research for Development, Yaoundé, Cameroon
Laboratory of Parasitology and Ecology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
Laboratory of Zoology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
University of Ngaoundéré, Faculty of Science, Department of Biological Sciences, Ngaoundéré, Cameroon
Laboratory of Hydrobiology and Environment, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
Department of Biology, Higher Teacher Training College, University of Bamenda, Bamenda, Cameroon
Key words: Agronomic impact, Cameroon, Cereals, Diversity, Rice varieties.
Today, rice has become one of the most consumed cereals in Africa in general and Cameroon in particular. The low domestic production imposes a strong import that accentuates the country’s trade imbalance. To reduce this issue of external dependency, the national government is encouraging domestic production. However, producer’s efforts are inhibited by various constraints among which the pest attacks in general and in particular the stem borers. Data collection was based on sampling and incubation of white rice panicles in an experimental plots set up at Nkolbisson, Yaoundé. The susceptibility of rice varieties to different pest species was evaluated by comparing the frequency of pest species on their infested panicles. Among the NERICA rice lines, NERICA 3 had the greatest percentage of attacks panicles that was 41.96 % while NERICA 9 and 13 had the less percentage of attacks panicles that was 14.29 % for both of them. A total of three pest species were identified from the panicles incubated, Orseolia oryzivora, Chilo zacconius and Diopsis apicalis, O. oryzivora being the most frequent. NERICA 3 with 41.96% of incubated panicles appears to be the most susceptible variety, while the Japanese’s Akitakomachi and Fukuhibiki showed no attack. These results are discussed in relation to the total sugar content and polyphenol in different rice varieties studied.
Get the original articles in Source: Volume 6, Number 4, April 2015 – IJAAR
Published By: International Network for Natural Sciences