Effects Of The Gamma Radiation In Nutritional Quality Of Soybean Grains Glycine Max (l.) [efeitos Da Radiação Gama Na Qualidade Nutricional De Grãos De Soja Glycine Max (l.)]

The objective of this study was to determine alterations caused by gamma radiation (doses of 0, 2, 4 and 8 kGy) in two different soybean cultivars (BRS 213 and Embrapa 48). The study included analysis of the lipid profile, isoflavones and total, free and protein-binding polyphenols. Both cultivars showed similar lipid profile and the irradiation decreased the amount of linoleic and linolenic acids. The results showed that glycosylated isoflavones were increased at 2 kGy and decreased at 4 and 8 kGy of radiation. The radiation was also responsible for the increase of antioxidant activity and for protein-binding polyphenols reduction. The results of this study indicated that gamma radiation did not change significantly the chemical characteristics of the soybean cultivars.322319322Aguiar, C.L., (2004) Transformação física E bioquímica De Isoflavonas Conjugadas De Soja (Glycine Max L.) E O Efeito Na Atividade Biologica in Vitro, p. 2004. , f. Dissertação. 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Adubação com molibdênio em soja, na presença ou ausência de calcário aplicado na superfície do solo, em plantio direto Molybdenum fertilization, in the presence or absence of lime applied to the soil surface, under no-tillage

Um experimento foi desenvolvido em 1997/1998 em Latossolo Vermelho Distrófico típico, em Passo Fundo, com pH em água 4,9 e 41,2mmol c de Al3+dm-3, para estudar os efeitos de calcário aplicado na superfície do solo, e de molibdênio, sobre o rendimento de grãos da soja. O efeito residual do calcário e a reaplicação de Mo foram estudados no mesmo local, em 1998/1999. O delineamento experimental foi em blocos completos casualizados, com quatro repetições. Os tratamentos foram constituídos por: 1) Mo na semente + calcário; 2) Mo foliar + calcário; 3) calcário; 4) Mo na semente; 5) Mo foliar e 6) testemunha. Aplicaram-se 2t ha-1 de calcário dolomítico. O molibdênio foi aplicado na dose de 12g ha-1, nas sementes, e 30g ha-1 quando via foliar, aos 30-33 dias após a emergência. A soja respondeu à adubação molíbdica, mesmo nos tratamentos com calcário, em ambas as safras. Os resultados indicam que a calagem superficial não disponibilizou molibdênio em quantidades suficientes para o desenvolvimento da soja, cultivada em plantio direto em Latossolo ácido. A aplicação de Mo nas sementes e via foliar tiveram a mesma eficiência.<br>An experiment was carried out in 1997/1998 on Dark Red Latosol (Haplorthox), in Passo Fundo, with pH (H2O) 4.9 and 41.2mmol c de Al3+dm-3, to study the effects of lime, applied on the surface of the soil, and molybdenum, on soybean yields. The residual effect of lime and the reapplication of Mo was studied at the same location, in 1998/1999. The experimental design was the complete randomized block, with four replications. The treatments consisted of: 1) lime + Mo applied on the seeds; 2) lime + foliar application of Mo; 3) lime; 4) Mo applied on soybean seeds; 5) Mo applied on soybean leaves and 6) no lime and no Mo. Lime was applied at a rate of 2t ha-1, at the surface of soil. Molybdenum was applied at the rate of 12g ha-1, on the seeds, and 30g ha-1, when foliar applied, 30-33 days after emergency. Soybean responded to applied Mo, even in the treatments with lime, in both seasons. The results of the two experiments indicated that the superficial application of lime did not release enough Mo for the development of no-tillage soybean in the acid soil used. The fertilization of molybdenum on the seeds or foliar way had the same efficiency