TY  - PRO
AU  - Muasya,W.N.P.
AU  - CIMMYT|EARO
AU  - Diallo,A.O.
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
TI  - Evaluation of maize hybrids and inbred lines for resistance to Striga
SN  - 92-9146-065-6
PY  - 1999///
CY  - Addis Ababa (Ethiopia)
PB  - CIMMYT|EARO
KW  - Africa
KW  - Inbreeding
KW  - Maize
KW  - AGROVOC
KW  - Pest control
KW  - Pest resistance
KW  - Pests of plants
KW  - Striga
KW  - Striga asiatica
KW  - Striga hermonthica
KW  - Weed control
KW  - Zea mays
KW  - Plant breeding
N2  - Striga species are estimated to infest twenty one million hectares in Africa with a potential to a further twenty three million hectares. Striga hermontheca and striga asiatica are root parasites which constraint production of maize, sorghum and millets in Sub-Sahara Africa. Striga attacks the host crop shortly after germination. After attachment on the root of the host it draws its water and nutrient requirements from the host. This leads to yield losses ranging from 30-50%. Most tropical maize cultivars grown in Africa are highly susceptible to striga. The use of varieties tolerant and resistant to striga has been recommended as the most practical approach to controlling striga for the resource poor small holder farmers. Resistance studies are based on count of the emerged parasite plants. Twenty-five hybrids and nine parental inbred lines were evaluated. Striga count was taken twice, at flowering and two weeks after. Analysis of variance of grain yield and agronomic characters was carried out using AGROBASE. Significant difference were observed among the inbred lines and the hybrids. Genetic variability for striga resistance/tolerance in maize was confirmed in terms of striga numbers and yield reduction
ER  -