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Brazilian Journal of Genetics

Print version ISSN 0100-8455On-line version ISSN 1678-4502

Abstract

VALARINI, Maria José; OTSUK, Ivani Pozar  and  VIEIRA, Maria Lucia Carneiro. Changes in N2 fixation in Stylosanthes scabra derived from tissue culture. Braz. J. Genet. [online]. 1997, vol.20, n.4, pp.-. ISSN 0100-8455.  http://dx.doi.org/10.1590/S0100-84551997000400025.

Plants were regenerated from leaf-derived callus culture of Stylosanthes scabra, a polyploid legume tolerant to drought and adapted to acid soils. A total of 168 regenerants were planted out in Leonard jars in a complete randomized design. Nitrogen fixation and vegetative growth were indirectly evaluated by shoot dry weight, root dry weight, shoot N content and acetylene reduction activity. The results showed higher variation in the regenerants than in controls not submitted to tissue culture. Significant differences were found for all nitrogen fixation related-traits

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