Data/hora: 17/06/2024 02:25:21

Biblioteca(s): 	Embrapa Amapá; Embrapa Cerrados; Embrapa Clima Temperado; Embrapa Semiárido; Embrapa Soja; Embrapa Trigo.	
Data corrente: 	17/09/1993	
Data da última atualização: 	02/06/1998	
Autoria: 	PEREIRA, L. A. G.	
Título: 	Comparisons of selected vigor tests for evaluating soybean seed quality.	
Ano de publicação: 	1974	
Fonte/Imprenta: 	Mississippi: Mississippi State University, 1974.	
Páginas: 	74p.	
Idioma: 	Inglês	
Notas: 	M.Sc. Thesis.	
Conteúdo: 	Thirty-nine soybean seed lots consisting of Bragg, Lee 68, Dare, Davis and Hill were studied under laboratory and field conditions. For these studies the lots were taken either intact (orginal seeds) and visually separated into different components (sound seed, wrinkle-coated seed, mechanically danaged seed, green colored seed, insect damaged seed, diseased seed and other). Original seed were evaluated through field emergence and standard germination test (first and final counts). Separated seed were studied by field emergence, root growth test and tetrazolium test (Potential germination, energy 1 - 2 and energy 1 - 3). Field emergence was conducted through a randomized complete block design, consisting of four replications with 3 counting dates, 7, 14, and 21 days after planting. Results showed differences among varieties at p = 0.1 level of probability. Good agreement between field emergence and percentage of sound seed in a lot was observed. A multiple correlation coefficient of R = 0.921 was obtained between field emergence and first and final countings in standard germination test and percentages of each component of a seed lot. Green seed showed persistently high vigor indices in all tests. Characteristics pattern reaction to tetrazolium (TZ) staining were detected for good seed, wrinkle-coated seed, mechanically damaged and insect damaged seed. Since such a close agreement was obtained, a fairly good indication of emergence in the field would be given by the values of TZ energy 1 - 3.	
Palavras-Chave: 	Avaliacao; EUA; Evaluation; Growth; Quality; Seed longevity; Seed testing; Soybean; Test; Teste; Tetrazolium test; USA.	
Thesagro: 	Crescimento; Germinação; Glycine Max; Qualidade; Raiz; Semente; Soja; Teste de Sementes; Teste de Tetrazólio; Teste de Vigor.	
Thesaurus Nal: 	germination; roots; seed quality; seeds; soybeans; viability; vigor.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CPATSA - (24301-1) - ADD - TS - PP - 35/1974 -  - 1974.00035 - DIS
CPAF-AP - (3777-1) - ADD - TS - PP -  - PER - 1974.00001 - DIS
CNPSO - (1130-1) - ADD - TS - -- - 16/74 -  - 16/74 - DIS
CPAC - (19226-1) - ADD - TS - -- - T007/74 - PER - T007/74 - DIS
CPACT - (2278-1) - ADD - TS - -- - 00198 -  - 1974.00198 - DIS
CNPT - (30458-1) - ADD - TS - -- - TS-0878 -  - 0878 - DIS