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Dayane Cristina Lima, Ângela de Fátima Barbosa Abreu and Magno Antonio Patto Ramalho

Abstract: Our aim in this study was to evaluate common bean progenies for
water use efficiency (WUE) and verify if selection carried out under conditions
without water limitation reflects the selection carried out under stress conditions.
Eighty progenies from the BRSMG Talismã x G4280 cross and 80 from the
BRSMG Talismã x G6492 cross were evaluated with high water availability (HWA)
and low water availability (LWA) in two locations and two years. Genetic variance,
heritability, accuracy, expected gain from selection, correlated response
to selection, genetic correlation between HWA and LWA and between the two
traits evaluated, and risk index in the recommendation (RI) were estimated.
Some progenies had a RI close to zero, were tolerant in LWA, and were responsive
in HWA. Progenies with high grain yield and WUE could be identified. The
two conditions of evaluation were equally efficient for selection, as verified by
estimates of expected gains from selection.

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