The methodology of the electrical conductivity test for Carthamus tinctorius L. seeds

Ingrid M H De L E Silva Silva,Givanildo Z Da Silva,Mirelle V Coelho,Amalia A S Silva,Carla G Machado,Gabriela F Gama

doi:10.1590/1807-1929/agriambi.v25n8p553-559

Ingrid M H De L E Silva Silva, Givanildo Z Da Silva + Show 4 more

Open Access

https://doi.org/10.1590/1807-1929/agriambi.v25n8p553-559

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Abstract

ABSTRACT The electrical conductivity test stands out for generating quick responses for lot differentiation; however, studies are needed to improve this practice in safflower seeds. This study aimed to verify the efficiency and establish a methodology of the electrical conductivity test for safflower seeds. Initially, 12 lots were characterized regarding physical properties and physiological potential. For electrical conductivity, the experiment was carried out in three stages with the 12 lots: firstly, the soaking period was determined (2, 4, 6, 8, and 16 hours), then the volume was evaluated (50, 75, 100, 150, and 200 mL), and finally the number of seeds (25 and 50 seeds) was determined. The electrical conductivity test using 25 seeds in 50 mL of distilled water for six hours of soaking enables the differentiation of safflower seed lots. Multivariate analysis of principal components is efficient in discriminating the vigor of safflower seed lots.

Highlights

The safflower (Carthamus tinctorius L.), originally from Asia and Africa, is a branched annual herbaceous plant belonging to the Asteraceae family, with a seed oil concentration between 35 and 50% (Flemmer et al, 2015)
The electrical conductivity test using 25 seeds in 50 mL of distilled water for six hours of soaking enables the differentiation of safflower seed lots
Multivariate analysis of principal components is efficient in discriminating the vigor of safflower seed lots

Summary

Introduction

The safflower (Carthamus tinctorius L.), originally from Asia and Africa, is a branched annual herbaceous plant belonging to the Asteraceae family, with a seed oil concentration between 35 and 50% (Flemmer et al, 2015). This oilseed is grown on all continents and has high economic value, as it has great versatility of properties (Sarto et al, 2018). The dissemination is carried out by seeds. For several years, their physiological quality has been one of the most researched aspects because it is fundamental for making decisions regarding the storage and/or marketing of this product (Frandoloso et al, 2017). There is an established methodology of this test only for pea seeds

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