02238nam a2200229 a 450000100080000000500110000800800410001910000220006024501210008226004360020352011670063965000290180665000090183565300140184470000300185870000180188870000180190670000230192470000150194770000190196270000270198115777632011-07-13       2009    bl uuuu     u00u1 u    #d1 aZOBIOLE, L. H. S.  aEffect of glyphosate on nodule formation and its interrelation with nickel content in glyphosate-resistant soybeans.  aIn: WORLD SOYBEAN RESEARCH CONFERENCE, 8., 2009, Beijing. Developing a global soy blueprint for a safe secure and sustainable supply: proceedings. Beijing: Chinese Academy of Agricultural Sciences: Institute of Crop Science, 2009. Poster. WSRC 2009. 1 CD-ROM. Editado por Lijuan Qiu, Rongxia Guan, Jian Jin, Qijan Song, Shuntang Guo, Wenbin Li, Yuanchao Wang, Tianfu Han, Xiaobing Liu, Deyue Yu, Lianzhou Jiang, Deliang Peng.c2009  aRecent research has demonstrated that glyphosate can decrease biological nitrogen fixation in glyphosate-resistant (GR) soybeans, however this reduction has been attributed directly to the effect of glyphosate on the microorganisms or indirectly through its intermediates that are also toxic to these microorganisms. This work aims to demonstrate that glyphosate can influence the symbiotic N2 fixation by lowering nickel content available to the microorganisms. The experiment was conducted in the greenhouse at the State University of Maringá, PR, Brazil during the summer cropping season, 2008. The experimental design was a completely randomized blocks in a factorial scheme 4 x 3 x 2 where the first factor was: (T1 - single application of glyphosate (900 g a.e. ha-1) at the four-leaf stage; T2 - sequential application (450 + 450 g a.e. ha-1) at the four-leaf and five-leaf stage; T3 - without glyphosate; T4 - non-GR parental line]; the second factor, maturity group (early, medium and late;) and third factor soil type. Under glyphosate use, GR soybeans showed reduced photosynthetic parameters, nickel contents, and nodule, shoot and root dry biomass.  aFixação de Nitrogênio  aSoja  aGlifosato1 aOLIVEIRA JUNIOR, R. S. de1 aKREMER, R. J.1 aCASTRO, C. de1 aOLIVEIRA, F. A. de1 aYAMADA, T.1 aCONSTANTIN, J.1 aOLIVEIRA JUNIOR, A. de