Genetic variation and correlation studies between micronutrient (Fe and Zn), protein content and yield attributing traits in mungbean (Vigna. radiata L.)

Abstract

Mungbean can effectively contribute in alleviation of iron, zinc and protein malnutrition as it is a source of micronutrients and protein. To improve this cultivars have to be developed which are rich in micronutrients and protein. But in general more focus is given to quantitative traits such as yield. Breeding mungbean for enhanced grain nutrients is still in its start-up phase. The present study was carried out to access genetic variation for both quantitative as qualitative traits. The correlation between important traits such as yield and Fe, Zn, protein content was calculated. A positive correlation was found between iron and zinc content (r = 0.47) whereas no significant correlation with grain yield was observed indicating no compromise of yield for improving quality. Breeding a cultivar which is nutritionally improved along with high yield is therefore possible. A few promising cultivars with high micronutrients, protein and yield were identified. These cultivars can be used in specific breeding programs aiming at nutrient-rich high yielding cultivars.

Genome-Wide SNP Identification and Association Mapping for Seed Mineral Concentration in Mung Bean (Vigna radiata L.)

“…Even though different methods were used to locate genomic regions/genes for Fe and Zn concentration in mung bean, the overlapping regions indicated common genomic regions that are responsible for Fe and Zn accumulation in mung bean. Correlation between minerals was observed for mung bean by Singh R. et al (2017) and similar results observed in common bean, where the majority of QTLs for Fe and Zn accumulation were located together ( Izquierdo et al, 2018 ). An association study of Fe, Se, and Zn in the garden pea have also indicated that loci related to Fe and Zn are clustered ( Diapari et al, 2015 ).…”

“…In summary, mung bean can effectively contribute to the alleviation of iron, zinc and protein deficiency in human populations of Asia ( Singh R. et al, 2017 ), but so far there is no genetic study of mineral nutrients in the crop. GBS, being a whole-genome method of surveying polymorphism across a collection of genotypes is ideal for gene discovery in mung bean and for finding SNP polymorphisms that can be used to select for biofortified, nutrient dense genotypes.…”

Heritability, genetic gain, and correlations in cowpea bean (Vigna unguiculata [L.] (Walp.)

“…YIELD did not have a correlation with FeC and ZnC, which agreed with the results obtained by Singh et al (2018). For the development of cultivars with higher yields and high micronutrient and protein contents, cultivars should be submitted to genetic studies to find quantitative trait loci (QTL) for Fe, Zn, protein and high yield contents (Gerrano et al, 2018;Gondwe et al, 2019).…”

Genetic Diversity and Association Studies in Greengram [Vigna Radiata (L.) Wilczek]

“…In the present study, number of pods per plant, number of pod clusters per plant, number of seeds per pod and number of branches per plant showed as significant and positive association with seed yield per plant ( Table 2). The positive association of pods per plant, pod clusters per plant, seeds per pod and branches per plant with seed yield per plant has been reported by Raje and Rao (2000) and Singh et al (2018). Reddy et al (2011) and Hemavathy et al (2015) reported positive association of pods per plant and seeds per pod with seed yield per plant.…”