Implications of genotype×input interactions in breeding superior genotypes for favorable and unfavorable rainfed upland environments

Implications of selection in common bean lines in contrasting environments concerning nitrogen levels

“…Under this condition, the estimates of correlated response by the selection in the presence of N and the response to environmental stress were all lower than in direct selection (Table 3). These results are similar to those reported by Banziger et al (1997), Brancourt-Hulmel et al (2005), Mandal et al (2010) and Weber et al (2012). These authors observed that if the goal is the selection of cultivars for N-poor environments, the selection must be performed under N stress to maximize the gain with selection.…”

“…However, there are contradictory reports concerning the efficiency of direct and indirect selection of cultivars and progenies. For example, some results obtained demonstrated that the selection under favourable conditions did not reveal gains expressed under unfavourable conditions (Banziger et al 1997, Brancourt-Hulmel et al 2005, Mandal et al 2010, Weber et al 2012. In contrast, some reports (Gallais et al 2008, Anbessa et al 2010 have shown that such indirect selection can be more efficient than direct selection.…”

Sensitive parameters for EPIC model evaluation and validity under soil water and nutrients limited conditions with NERICA cropping in West Africa

“…Several kind of stress may limit varietal selection progress under unfavourable environments (Banziger and Cooper, 2001). In fact, Mandel et al (2010) found smaller genetic variance for grain yield under low-input conditions in India.…”

Sustainable Rice Yield in Water-Short Drought-Prone Environments: Conventional and Molecular Approaches

“…Recently, grain yield has been suggested as a selection parameter in drought breeding programs under both upland and lowland situations Kumar et al, 2007;Kumar et al, 2008). By using this approach, improved breeding lines are developed at IRRI and in partner countries such as the Philippines, India, Nepal, and Bangladesh (Verulkar et al, 2010;Mandal et al, 2010). In Brazil and Thailand also, direct selection for yield has been successfully applied in breeding for drought tolerance in upland and rainfed lowland conditions (Ouk et al, 2006).…”