TY  - PRO
AU  - Ngaboyisonga,C.
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
ED  - Arnel R. Hallauer International Symposium on Plant Breeding
TI  - Small-scale farmers benefist from CIMMYT maize germplasm in Rwanda
U1  - 631.53 
PY  - 2003///
CY  - Mexico, DF (Mexico)
PB  - CIMMYT
KW  - Food crops
KW  - Germplasm
KW  - AGROVOC
KW  - Grain yield
KW  - Maize
KW  - Rwanda
KW  - Varieties
KW  - Genotypes
N2  - Maize is an important crop in Rwanda, ranking sixth among food crops (FRSP and DSA 2002). However, maize yields are very low and one way to increase productivity is to release improved varieties. The release of maize varieties requires testing across seasons and sites and on-farm trials.,Yield stability is an important factor to consider when releasing a cultivar. The method used to analyze yield stability was developed by Eberhart and Russell (1966). It involves regressing the genotype mean from several locations on the environmental value (environmental index). A stable genotype has a regression coeffident close to one and a deviation from regression close to zero. Stable varieties are easily adopted by farmers
ER  -