Resiliences to water deficit in a phenotyping platform and in the field: How related are they in maize?

摘要: Abstract Resilience to soil water deficit is a priority of many maize breeding programmes. Its genetic analysis requires estimators that characterise each genotype in reproducible way. We have tested and compared three methods for that, namely (i) the ability hybrids maintain leaf growth range potentials phenotyping platform, (ii) direct estimator resilience seed number network field experiments (iii) classical involving tolerance indices variance analysis. A drought index was obtained by averaging potential, measured with tensiometers, phenological phase during which determined (evaluated individual hybrid site). It closely correlated 19 were analysed over 14 environmental situations France, Hungary Chile. The slope regression line between number, established hybrid, taken as an estimate hybrid. estimated this way varied 2-fold set studied hybrids, short-term platform. In contrast, via interaction genotype × watering treatment resulted non-significant because large differences genotypes given watering treatment. therefore propose estimation feasible minimum amount measurements. This provides estimations are consistent those combination both estimates insight into mechanisms associated potentially contributing accelerate gain.