Data/hora: 22/06/2024 16:49:19

Biblioteca(s): 	Embrapa Agrobiologia; Embrapa Cerrados; Embrapa Tabuleiros Costeiros.	
Data corrente: 	08/06/1995	
Data da última atualização: 	25/02/2022	
Autoria: 	FERNANDES, G. M. B.	
Afiliação: 	GLORIA MARTA BELLON FERNANDES, CPATC.	
Título: 	Methods for overcoming seed dormancy in Pensacola Bahiagrass (Paspalum notatum Flugge).	
Ano de publicação: 	1976	
Fonte/Imprenta: 	Mississippi: Faculty of Mississippi State University, 1976.	
Páginas: 	30p.	
Idioma: 	Inglês	
Notas: 	A Thesis submitted to the Faculty of Mississippi State University in partial fulfillment of the requirements for the degree of Master of Science in the Department of Agronomy.	
Conteúdo: 	Germinative responses of Pensacola bahiagrass seed to various chemical and heat treatments, temperature ranges, and in the field were evaluated in this study. A 20 minute soak in sulfuric acid was the most effective treatment for promoting germination of Pensacola bahiagrass. It affected both the speed and percentage of germination. Acid-scarified seed emerged more rapidly in field tests did non-treated seed. In general, acid scarified seed emerged about one week earlier. Chemical treatments with gibberellic acid, ethylene chlorohydrin and potassium nitrate had no appreciable effect on germination of Pensacola bahiagrass seed or were injurious. At concentrations of 10-100 ppm a sodium azid soaking treatment slightly increased germination, but at higher concentrations the treatment was detrimental. Although the results of heat treatments were somewhat inconsistent, 3-6 days heating at 40-45C generally improved germination of Pensacola bahiagrass. Pensacola bahiagrass seed germinated over a wide range of alternating and constant temperatures. However, seeds subjected to alternating temperature gave much higher germination percentages as compared to constant temperature ranges. The following alternating temperature ranges produced high germination percentages: 15-20 to 35-40C; 15-20 to 30-35C; 20-25 to 35-40C; and 30-35 to 15-20C. 	
Palavras-Chave: 	Pensacola bahiagrass; Sementes.	
Thesagro: 	Dormência; Paspalum Notatum; Semente; Tecnologia.	
Thesaurus Nal: 	dormancy; seeds.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Tabuleiros Costeiros (CPATC)	
Exemplares: 	CPATC - (17345-1) - ADD - TS - PP - TS1976.3 -  - 1976.00003 - DIS
CPAC - (16712-1) - ADD - TS - -- - T031/76 - FER - T031/76 - DIS
CNPAB - (25391-1) - ADD - TS - -- - 631.521 - F363m - 1995.00015 - DIS