TY  - BK
AU  - Denic,M.
AU  - Chauque,P.
AU  - Fato,P.
AU  - Friesen,D.K.|Palmer,A.F.E.
AU  - Haag,W.
AU  - Langa,M.
AU  - Mariote,D.
AU  - Crossa,J.
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) Kenya
TI  - Maize screening for multiple stress tolerance and agronomic
SN  - 970-648-120-6
U1  - 338.16 
PY  - 2002///
CY  - Nairobi (Kenya)
PB  - KARI|CIMMYT
KW  - Agricultural economics
KW  - Agroecosystems
KW  - Crop husbandry
KW  - Maize
KW  - AGROVOC
KW  - Mozambique
KW  - Seed production
KW  - Varieties
KW  - Yield factors
KW  - Zea mays
KW  - Plant breeding
KW  - CIMMYT
KW  - KARI
N2  - Maize is the principal crop and staple food in Mozambique. The most important constraints to maize production in the country are drought, soil infertility, diseases and pests. Therefore, the main attention in the breeding program is given to the selection for tolerance/resistance to maize streak virus, downy mildew, borers, drought and soil infertility. Among the agronomic traits, attention is given to quality protein maize (QPM), grain texture and earliness. In order to achieve the goal, selected populations or lines with alleles conferring the desirable traits were used. To create stress conditions for strong selection pressure on selected traits, combinations of different procedures were implemented. The breeding method of reciprocal recurrent selection was applied. The same methods were used for normal maize and QPM. Data obtained revealed that remarkable improvement for the traits under selection was achieved. The greatest progress was obtained in selection for streak resistance, flintiness and earliness. In the case of drought stress, statistical analyses revealed significant negative correlations between yield and the anthesis-silking interval, and between yield and days to silk, but a positive correlation between yield and grain weight per ear
ER  -