Responses of two common bean (Phaseolus vulgaris L.) genotypes to deficit irrigation

Analysis of the Similarity between in Silico Ideotypes and Phenotypic Profiles to Support Cultivar Recommendation—A Case Study on Phaseolus vulgaris L.

“…The distributions derived for the six functional traits highlighted the marked heterogeneity in the pool of bean varieties, although the distribution means were in line with those reported in the literature for the common bean. For instance, the values of radiation use efficiency and light extinction coefficient estimated in this study were consistent with that reported by other authors [51,52] for . Similarity indices for late sowings between the ideotypes defined for the different agro-climatic contexts and the functional trait profiles of the 24 varieties analyzed in this study.…”

“…The distributions derived for the six functional traits highlighted the marked heterogeneity in the pool of bean varieties, although the distribution means were in line with those reported in the literature for the common bean. For instance, the values of radiation use efficiency and light extinction coefficient estimated in this study were consistent with that reported by other authors [51,52] for common beans grown under optimal conditions. In the same way, the mean values for plant height, seed weight, and phenological traits were similar to what was reported for Italian common bean genotypes by Mercati et al [53] and Campion et al [54].…”

Temperature-Associated Effects on Flavonol Content in Field-Grown Phaseolus vulgaris L. Zolfino del Pratomagno

“…Overall yield was significantly higher in Pisa (distinguishable as a cooler environment than Bologna), whereas secondary metabolite levels were significantly higher in Bologna (Table 1). Irrigation (full field capacity) resulted in a significant improvement in overall yield compared to the non-irrigated condition (ca 45-50% of field capacity), similar to work reported previously [8,10,11,19] Total polyphenol and flavonol contents in both genotypes were significantly higher in non-irrigated compared to irrigated conditions, corroborating previous findings [9,10,20].…”

“…Temperature-associated effects on kaempferol biosynthesis warrant consideration when selecting a cultivation environment to augment the kaempferol-based anticarcinogenic benefits [25] present in this genotype. Future research worthy of investigation would be to introduce the factor of no-irrigation (and/or deficit irrigation), shown both by this article and previous studies [9][10][11] to increase flavonol content, to investigate a possible synergy or combined effect with temperatures at different altitudes. A recent study showed that the Manteca yellow bean (distinctive for the accumulation of seed-coat kaempferol 3-O-glucoside) does not impair the absorption of iron, unlike black and red seed types that inhibit iron absorption [31].…”

“…For the common bean, given that more than 60% of global production is cultivated under non-irrigated conditions [8], particular attention has been paid to the agronomic practice of deficit or restricted irrigation, ensuring that field capacity is maintained at 40%-60%. Deficit irrigation or moderate water stress was shown to induce phytochemical content in seeds (flavonoids) with variable effects on yield [9,10] and is currently utilized in identifying more drought-resistant genotypes [9][10][11].…”