Physiological quality and seed storage potential of four soybean cultivars

Larissa Aparecida Giasson,Silvia Rahe Pereira,Adriana Paula D’Agostini Contreiras-Rodrigues,Betania Brum De Bortolli,Daniela Aparecida Dalla-Costa,Aline Ferreira Coelho

doi:10.33448/rsd-v10i4.13635

Abstract

The objective of this study was to evaluate physiological seeds quality of four soybean cultivars during storage, under controlled and uncontrolled conditions. Seeds of Brasmax Lança IPRO, Brasmax Raio IPRO (está diferente do Material e Médtodos), Pioneer 95y52 and TMG 7062 IPRO cultivars were stored in controlled (20 ± 1.2 °C) and uncontrolled (producer's warehouse) environments and the following traits were assessed: percentage of germination (GERM), germination speed index (GSI), germination speed (GS) and accelerated aging (AA) at 0, 60, 120 and 180 days of storage. Covariance matrices structure of storage time was tested through repeated measures analysis, adopting a bifactorial model. Data were submitted to ANOVA (α=5%) and when the means presented significant differences, regression analysis and Scott-Knott test (α=5%) were performed. Differences in soybean seeds physiological quality are not related to storage environment. Lança cultivar was the most tolerant to storage, while Ray and TMG 7062 cultivars were more sensitive.

Highlights

Soybean [Glycine max (L.) Merrill] is the most important agricultural species in the world, representing the oleaginous species with the greatest cultivation and consumption on the whole planet
Data were submitted to Analysis of Variance (ANOVA) and when the means presented significant differences in the level of 5% probability of error, they were submitted to regression analysis and grouping of means by the ScottKnott test (α= 5%), using the Genes software (Cruz, 2013)
A significant interaction was found between the cultivars-environment and storage times (α=5%) for the variables germination speed index (GSI) and germination speed (GS), which indicates that for these, soybean cultivars stored in the two environments behave differently during storage times (Table 1)

Summary

Introduction

Soybean [Glycine max (L.) Merrill] is the most important agricultural species in the world, representing the oleaginous species with the greatest cultivation and consumption on the whole planet This is due to its great economic value, because of China's high demand for grain, as well as its wide use by the chemical, pharmaceutical and agro-industrial industry (Oliveira et al, 2017). In this context, Brazil is considered one of the world's largest soybeans producers, due to a series of advantages arising from edaphoclimatic, cultural and environmental factors, as well as productivity gains arising from the high-standard technologies introduction, both related to culture and management (Pellenz, Almeida & Freitas, 2019). With regard to physiological quality, this characteristic is related to the ability of a seed to perform its vital functions (Cardoso et al, 2012; Kappes et al, 2012), so it is one of the main characteristics to be considered in the crop implantation (Dias et al, 2010)

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