Maize screening for multiple stress tolerance and agronomic
Material type: TextPublication details: Nairobi (Kenya) KARI|CIMMYT : 2002Description: p. 88-91ISBN:- 970-648-120-6
- 338.16 FRI
Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
---|---|---|---|---|---|---|---|---|---|
Book | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Publications Collection | 338.16 FRI (Browse shelf(Opens below)) | 1 | Available | F630188 |
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.
Genetic Resources Program
English
0409|AGRIS 0401|AL-Maize Program
Juan Carlos Mendieta
CCJL01
CIMMYT Publications Collection