Testes de vigor na avaliação da qualidade fisiológica de sementes Erythrina velutina Willd. (FABACEAE - PAPILIONOIDEAE)

Abstract

RESUMOA aplicação de testes de vigor de sementes tem sido fundamental para determinação da qualidade fisiológica de forma rápida e eficaz, destacando-se, os testes baseados no desempenho das plântulas como uma das opções disponíveis. Conduziu-se este trabalho, com o objetivo de avaliar a eficiência de testes de vigor para determinação da qualidade fisiológica de sementes de Erythrina velutina. Determinou-se em cinco lotes de sementes de E. velutina o teor de água e o peso de mil sementes e realizou-se os testes de germinação, emergência em campo, índice de velocidade de germinação e de emergência, comprimento e massa seca de plântulas do laboratório e campo. Os testes de campo (emergência de plântulas, índice de velocidade de emergência de plântulas e massa seca da parte aérea das plântulas) são eficientes na separação dos lotes de sementes de E. velutina em níveis de vigor. Termos para indexação:Mulungu, germinação, vigor, emergência, Erythrina velutina. ABSTRACTThe application of vigor tests of seeds has been fundamental as a fast and efficient form of determination of physiological seed quality, highlighting the tests based on the performance of seedlings as one of the available options. The objective of this study was to evaluate the efficiency of different vigor tests for the determination of the physiologic quality of Erythrina velutina seeds. In five lots of E. velutina seeds, water content and seed weight were determined. Tests for germination were performed for field seedling emergence, speed germination and emergence index, and length and dry matter weight of seedlings from both the laboratory and from the field. Field tests (seedling emergence, speed emergence index, and dry matter weight of the aerial part of seedlings) are efficient in the separation of the seed lots of E. velutina in vigor levels.

Pollination and quality of seeds and plantlets of Eugenia uniflora L.

“…However, considering that the germination test is conducted under favorable conditions of temperature, light, substrate, and humidity, allowing the batch to express the maximum potential, complementary tests are necessary to determine their vigor with greater reliability (Guedes et al 2009).…”

Seed Germination and Production of <i>Erythrina mulungu</i> and <i>Erythrina velutina</i> Plantlets

“…Bento et al [29] investigating the physiological quality of E. velutina seeds observed homogeneity among germination tests, germination speed index and accelerated aging. Both, data obtained by those authors and data recorded in this present work may be used as reference when focusing on large-scale production of E. velutina plantlets for commercial purposes.…”

Digital images of seedling for evaluating coffee seed vigor

“…This fact evidences the sensitiveness of the SVIS ® technique, which identified more subtle vigor variations among the lots during the trials. As affirmed by Guedes et al (2009), seedling length is a more sensitive parameter for sorting lots with similar vigor, especially compared to traditional measurement methods, which are based on the number of normal seedlings in the first germination count.…”