Response of Selected Kenyan Rice Cultivars to Infection by Root Knot Nematode ( Meloidogyne incognita )
- PDF / 655,634 Bytes
- 8 Pages / 612 x 811 pts Page_size
- 69 Downloads / 162 Views
J. Crop Sci. Biotech. 2019 (March) 22 (1) : 47 ~ 54 DOI No. 10.1007/s12892-017-0101-0 RESEARCH ARTICLE
Response of Selected Kenyan Rice Cultivars to Infection by Root Knot Nematode (Meloidogyne incognita) John Namu1, Amos Alakonya1,2, Hannah Karuri3*, Justin Nyaga3, Joel Masanga4, Editah Njeri5 1
Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture and Technology, P.O Box 30197-00100, Nairobi, Kenya International Institute of tropical Agriculture, Headquarters: PMB 5320, Oyo road, Ibadan, Nigeria. 3 Department of Biological Sciences, University of Embu, P.O Box 6-60100, Embu, Kenya 4 Plant transformation Laboratory, Department of Biochemistry and Biotechnology, Kenyatta University, P.O Box 43844-00100, Nairobi, Kenya 5 Department of Business, Kenyatta University, P.O Box 43844-00100, Nairobi, Kenya 2
Received: August 08, 2017 / Revised: January 19, 2018 / Accepted: June 09, 2018 Ⓒ Korean Society of Crop Science and Springer 2019
Abstract Meloidogyne incognita causes huge yield losses in rice which is the third most important cereal crop in Kenya. The aim of this study was to identify M. incognita-resistant rice cultivars from Kenya and relate the responses to known resistance pathways with OsPR1a, OsPAL1, and OsJAMYB as marker genes in rice. Five rice cultivars BW 196, Basmati 217 (Pishori), Sindano, IR 2793-80-1 (grown in lowland irrigated fields), and NERICA 4 (grown in upland rainfed fields) were evaluated for resistance to M. incognita under greenhouse conditions in two separate trials. The number of nematode eggs, reproduction factor (RF), and the level of galling were determined. The RF was used to select resistant cultivars. There was a significant difference (P < 0.001) in the number of eggs, galling index, and RF among the cultivars. NERICA 4, BW 196, and Sindano were classified as resistant with an RF
Data Loading...
