Abstract
ABSTRACT Okra is consumed in several countries and is an important source of nutrients for human food. To promote okra production and consumption is essential the development of new cultivars with high nutritional levels, besides desirable agronomic traits. Thus, this study aimed to evaluate nine okra landraces by agronomic and biochemical traits. The accessions UEL2, UEL3, UEL5, UEL6, UEL7, UEL9, UEL10, UEL13 and UEL15 were grown in open field condition and evaluated in relation to fruit yield, fruit weight, fruit diameter, number of fruits per plant and plant height. The biochemical analysis included mineral composition, crude protein content, vitamin C content, total flavonoid and phenolic content and antioxidant activity. The UEL7 accession stood out for the high levels for biochemical traits such as content of some minerals, vitamin C and antioxidant activity. On the other hand, UEL3 accession had a low performance for biochemical traits, but stood out for agronomic traits such as fruit yield and number of fruits per plant. Hence, the UEL7 and UEL3 landraces may be introduced in breeding programs focused on human food and agronomic performance, beyond to contribute for okra germplasm conservation.
Highlights
O quiabo é vegetal consumido em vários países e é importante fonte de nutrientes para a alimentação humana
According to the World Health Organization (WHO), low consumption of fruits and vegetables is among the biggest risk factors that contribute to mortality (OMS, 2019)
For the variable fruit diameter, the group with the lowest averages was composed by only two landraces UEL5 and UE15, showing diameters of 17.4 and 17.8 mm, respectively
Summary
O quiabo é vegetal consumido em vários países e é importante fonte de nutrientes para a alimentação humana. Para promover a produção e o consumo de quiabo, é essencial o desenvolvimento de novos genótipos com altos níveis nutricionais, além de características agronômicas desejáveis. O genótipo UEL7 destacou-se pelos altos níveis de características bioquímicas, como conteúdo de alguns minerais, vitamina C e atividade antioxidante. O UEL3 apresentou baixo desempenho para características bioquímicas, mas destacou-se por características agronômicas, como produtividade e número de frutos por planta. To promote okra production and consumption the development of new improved cultivars for agronomic and nutritional traits is essential (Vidal et al, 2018). The variability for agronomic and biochemical traits of okra has not yet been fully revealed, which is extremely important resource for plant breeding programs. The objective of this study was to characterize nine okra landraces using agronomic characteristics and biochemical parameters, aiming the promising genotypes selection for breeding programs
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