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O presente trabalho foi desenvolvido no laboratorio de tecnologia de sementes da Universidade Estadual do Sudoeste da Bahia, Campus de Vitoria da Conquista UESB, com objetivo de avaliar a qualidade fisiologica de sementes de algodao ( Gossypium hirsutum L.), utilizando-se cinco cultivares (DP 604, FM 993, BRS 368, TMG 642 e DELTA OPAL). As sementes foram submetidas aos seguintes testes: teor de agua, peso de mil sementes, germinacao, primeira contagem de germinacao, indice de velocidade de emergencia, emergencia, comprimento da parte aerea, massa seca das plântulas e condutividade eletrica. O delineamento experimental utilizado foi o inteiramente casualizado, em quatro repeticoes de 50 sementes por tratamento. A cultivar TMG 642 demonstrou baixa qualidade fisiologica das sementes, quando comparados com as cultivares DP 604, FM 993, BRS 368, e DELTA OPAL. Os testes de germinacao, condutividade eletrica e indice de velocidade de germinacao mostraram eficiencia na separacao de cultivares de sementes de algodao em niveis de vigor.  Physiological performance of cottonseed grown in Luis Eduardo Magalhaes, Bahia ABSTRACT : This study was conducted at the State University of seed technology laboratory of Southwest Bahia, Campus Victory Conquest, UESB, to evaluate the physiological quality of cotton seeds ( Gossypium hirsutum L.), using five cultivars (DP 604, FM 993, BRS 368, GMT 642 and DELTA OPAL). Seeds were subjected to the following tests: water content, weight of a thousand seeds, germination, first count, emergence speed index, emergency, shoot length, dry mass of seedlings and electrical conductivity. The experimental design was completely randomized, with four replications of 50 seeds per treatment. The cultivar TMG 642 demonstrated low physiological seed quality when compared with the DP 604 cultivars, FM 993, BRS 368, and DELTA OPAL. Germination tests, electrical conductivity and germination rate index showed efficiency in the separation of cotton seed varieties in force levels.

Desempenho fisiológico de sementes de algodão cultivadas em Luís Eduardo Magalhães, Bahia