Background: Mutagenesis has also been used to improve many desirable traits such as earliness, darkness, resistance or tolerance to biotic and abiotic stress, seed yield and oil quality. There are numerous mutagen agents, both chemical and physical, available to create and obtain valuable mutations in crop plants.&nbsp; 
 
Methods: The experiment was done at the laboratory of the Faculty of Applied Sciences, Ton Duc Thang University in Vietnam from September 2021 to December 2022. This study examined the effects of ultraviolet B-light (UV-B) and methyl salicylate (MeSA) treatment on phytochemical constituents (total phenols and flavonoids) and nutritional characteristics (protein and fat content) in a common bean cultivar, GRIS2.&nbsp; 
 
Result: The results show that UV irradiation for 3 hours increased the phenolic content in M1 seeds when compared to the control and other treatments. Furthermore, compared to the control and other treatments, UV-B irradiation for up to 5 hours increased the phenolic, protein and lipid content in the pod (in the immature pod, mature pod and seed). Alternatively, treatment with MeSA considerably decreased the levels of these same compounds. Treating the seed with 0.05 mM MeSA did increase the flavonoid content. These findings demonstrate the potential of UV-B treatment for improving bean nutritional quality. On the other hand, the negative general implications of the higher MeSA treatment suggest exogenous treatments should be kept at lower concentrations to ensure the minimization of nutritional losses.

The Effects of UV Light and Methyl Salicylate on Phytochemical Constituents and Nutritional Traits in Common Bean (Phaseolus vulgaris L.)

<div>Background: Beans constitute one of the most important grain legume species from the socioeconomic point of view, playing an essential role in a sustainable agriculture and food safety and nutrition. In fact, beans contain a rich diversity in nutrients, highlighting their high protein, starch and fiber content. Canary Islands have a considerable diversity of beans, including three of the five cultivated species of Phaseolus: P. coccineus, P. lunatus and P. vulgaris, the latter being the most cultivated.</div>

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Methods: Proximate composition, total phenolics, pH, acidity, minerals and trace elements were determined in 23 common bean accessions (P. vulgaris) in order to find out their nutritional potential and promote their cultivation. 
 
Result: Parameters found fell well into the ranges of the data described in the literature for beans. The consumption of beans contributes remarkedly to the daily intake of protein (although is deficient in sulfur amino-acids), fiber, phenolic compounds, minerals such as Mg and K and trace elements as Fe (although with low bioavailability), Cu and Mn. Phenolic compounds in beans increases when pH decreased and acidity increased. Protein content was positively correlated with trace elements content, except Se. Color of the seed influenced on content protein, starch, fiber, P, K, Mg, Fe, Cu and Zn, while shape only affected on starch, fiber, P and K.</div>

The Effects of UV Light and Methyl Salicylate on Phytochemical Constituents and Nutritional Traits in Common Bean (Phaseolus vulgaris L.)

Physico-chemical and Nutritional Characterization of Phaseolus vulgaris L. Germplasm