Electrical Conductivity Test for Measurement of White Clover Seeds Vigor

Abstract

This study aimed to evaluate the physiological performance of white clover seed lots of different tegument colours, besides to analyses the electrical conductivity test methodology with different seeds number, water volume and soaking periods. The experiment was developed at the Seed Didactic Laboratory in the Agronomy College “Eliseu Maciel” at the Federal University of Pelotas, in Pelotas-RS, Brazil. White clover seeds were manually separate, composing four lots of different coloured seeds: yellow, orange, brown and mixed. White clover seeds of yellow colour tend to present greater physiological potential through its germination and vigour. The electrical conductivity test was not efficient on identifying different vigour levels in white clover seed lots.

Hydrotime Model Parameters Estimate Seed Vigor and Predict Seedling Emergence Performance of Astragalus sinicus under Various Environmental Conditions

“…Tao et al found that there was an advantage in using high-vigor CMV seeds to achieve better seedling emergence, whereas low-vigor seeds caused limited seedling emergence [18]. The selection of high-vigor seeds has also been proven to be helpful for seedling emergence in other forage legumes, such as alfalfa (Medicago sativa L.) [19], white clover (Trifolium repens L.) [20], and birdsfoot trefoil (Lotus corniculatus L.) [21]. Thus, more attention should be paid to seed-vigor testing for forage legumes.…”

Potencial Fisiológico De Sementes De Peltogyne Confertiflora (Mart. Ex Hayne) Benth. Por Testes Bioquímicos / Physiological Potential of Seeds of Peltogyne Confertiflora (Mart. Ex Hayne) Benth. By Biochemical Tests

“…No entanto, apesar desses testes terem apresentados resultados satisfatórios, alguns parâmetros devem ser considerados, pois podem afetar os resultados do teste e, para obter informações confiáveis, fatores como teor de umidade das sementes, volume de água de imersão, temperatura de hidratação, integridade das sementes, genótipo, período de embebição, entre outros, devem ser estudados (SANTOS et al, 2019;VASCONCELOS et al, 2019). Assim, as metodologias necessitam ser ajustadas e padronizadas para as espécies florestais nativas considerando suas particularidades, para que futuramente estas informações a respeito dos testes e espécies possam ser incorporadas no sistema de certificação de sementes de espécies florestais nativas para comercialização das mesmas com alta qualidade.…”