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- W133986674 abstract "The study propagation of non-cultivated plants aims the species domestication, and its propagation can be carried out by seeds. However exist factors that affect the germination, among them there are the size, the weight of seed and the use of chemical substances. The present work was carried out with the objective to evaluate the influence of the weight of seeds and chemical promoters on the seed germination of Hyptis pectinata. It was used seeds collected and classified of sambacaita in blower machine, which had been placed to germinate on Petri dishes, and kept in germination chamber at 27oC under constant light. The experimental design was the completely randomized in factorial scheme 2x4, referring two chemical seeds classification llow and heavy seeds) and three substances (GA3, KNO3 and PEG) and the control, with four replications of 50 seeds each. The variables analized were percentage, speed germination index and mean square for time of germination. The statistical analysis was carried out using the software Sanest, and the average values compared by the Test of Tukey 5%. The different classification of seeds by weight present influence on the physiological quality of sambacaita s seeds. Heavy seeds germinate in higher percentage, and faster speed, and short time. The chemical treatment with KNO3 and GA3 increases the germination percentage, but for REVISTA CAATINGA — ISSN 0100-316X UNIVERSIDADE FEDERAL RURAL DO SEMI-ARIDO (UFERSA) Pro-Reitoria de Pesquisa e Pos-Graduacao Caatinga (Mossoro,Brasil), v.22, n.1, p.187-192, janeiro/marco de 2009 www.ufersa.edu.br/caatinga the speed germination index and germination do not present significant difference. The use of PEG increases the mean square time of germination of sambacaita’s seeds." @default.
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- W133986674 date "2009-01-01" @default.
- W133986674 modified "2023-09-23" @default.
- W133986674 title "Influence of seed weight and chemical promoters in the physiological quality of sambacaitá seeds." @default.
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