A non-destructive selection method for faster growth at suboptimal temperature in common bean (Phaseolus vulgaris)

Abstract

A non-destructive method has been developed to select common bean (Phaseolus vulgaris L.) plants whose growth is less effected at a suboptimal temperature. Shoot weight was determined at a suboptimal (14 ° C) and optimal temperature (20 ° C), 38 days after sowing and accessions identified with a significantly lower than average weight reduction at 14 ° C compared to their weight at 20 ° C. Weight of primary leaves and of the shoot was correlated with seed weight at both temperatures, but no correlation was found between shoot weight reduction at 14°C and seed weight.

Combining ability analysis across environments for some traits in dry bean (Phaseolus vulgaris L.) under low and high soil phosphorus conditions

“…However, these parents were late in Xowering, a trait that might not be desirable in regions where drought is a problem. Drijfhout et al (1991) found that high P supply led to higher vegetative growth, and increased SDW from 5.34 to 7.10 g plant ¡1 . In our case, this varied from 4.1 under low soil P to 12.9 g plant ¡1 under high soil P at both sites.…”