Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2010.402.413PimratchS. JogloyS. VorasootN. ToomsanB. KesmalaT. PatanothaiA. HolbrookC.C. 7201097Twelve peanut genotypes were tested under three water regimes in two greenhouses to investigate the effects of drought on biomass production and N2 fixation. Drought reduced biomass production from 36.5 to 56.0% and reduced nitrogen fixation from 26.8 to 68.8%. Most genotypes with high biomass production under Field Capacity (FC) had high reduction in biomass production under drought conditions, but fewer genotypes with high N2 fixed under FC showed high reduction in N2 fixed. Biomass production under FC in general gave more contribution to biomass production under drought conditions than did the reduction. N2 fixed under FC and the reduction in N2 fixed contributed similarly to N2 fixed under drought conditions. Positive and significant correlations between N2 fixed and biomass production were found at FC and 2/3 available soil water (AW), but the correlation was not significant at 1/3 AW. Tifton-8 was the best genotype for high N2 fixed under FC and KK 60-3 was the best genotype for low reduction. Correlations between N2 fixed and nodule dry weight and shoot dry weight were high and consistent across water regimes. This information is important for breeders to develop peanut cultivars with reasonably high nitrogen fixation under drought conditions.]]>Arrenddell, S., J.C. Wynne, G.H. Elkan and T.G. Isleib,198525865869Arrendell, S., J.C. Wynne, G.H. Elkan and T.J. Schneeweis,1988159093Bell, M.J., G.C. Wright and M.B. Peoples,19942-fixing capacity of peanut cultivars with differing assimilate partitioning characteristics.]]>4514551468Guebel, D.V., B.C. Nudel and A.M. Giulietti,19915427430Scott, C., M. Cooper, D. Podlich and G. Hammer,20039599113Chapman, A.L. and R.C. Muchow,1985116979Cooper, M. and I.H. DeLacy,199488561572De Silva, M., L.C. Purcell and C.A. King,199636611616Devries, J.D., J.M. Bennett, S.L. Albrecht and K.J. Boote,198921215226Gonzalez, L. and M. Gonzalez-Vilar,20012001pp: 207-212pp: 207-212Gomez, K.A. and A.A. Gomez,19842nd Edn.,Pages: 704Pages: 704Giller, K.E.,20012nd Edn.,Pages: 423Pages: 423Elowad,H.O.A. and A.E. Hall,198715229244Hungria, M. and M.A.T. Vargas,20002 fixation in grain legumes in the tropics, with an emphasis on Brazil.]]>65151164Jackson, P., M. Roberston, M. Cooper and G. Hammer,1996491137Marschner, M.,19952nd Edn.,pp: 200-255pp: 200-255McDonagh, J.F., B. Toomsan, V. Limpinantana and K.E. Giller,1993154267277McDonagh, J.F., B. Toomsan, V. Limpinuntana and K.E. Giller,19952-fixation, production and residual nitrogen benefits to rice.]]>177111126Nageswara Rao, R.C., L.J. Reddy, V.K. Mehan, S.N. Nigam and D. McDonald,19921992Pages: 455Nambiar, P.T.C. and P.J. Dart,1983Arachis hypogaea L.]]>102629Nigam, S.N., S.L. Dwivedi, P.T.C. Nambiar, R.W. Gibbons and P.J. Dart,19852-fixation and related traits in peanut.]]>125557Nigam, S.N., M.S. Basu and A.W. Cruickshank,20032003pp: 1517Nigam, S.N., S. Chandra, K.R. Sridevi, M. Bhukta and A.G.S. Reddy et al.,2005146433439Nautiyal, P.C., V. Ravinda, P.V. Zala and Y.C. Joshi,199935371385Phoomthaisong, J., B. Toomsan, V. Limpinuntana, G. Cadisch and A. Patanothai,20032-fixing mungbean and groundnut cultivars.]]>391624Peoples, M.B., V.J. Bell and H.V.A. Bushby,1992Arachis hypogaea L. cv. Virginia Bunch).]]>43595607Pimratch, S., S. Jogloy, B. Toomsan, P. Jaisil, J. Sikhinarum, T. Kesmala and P. Patanothai,200426295304Pimratch, S., S. Jogloy, N. Vorasoot, B. Toomsan, A. Patanothai and C.C. Holbrook,20081941525Pimratch, S., S. Jogloy, N. Vorasoot, B. Toomsan, T. Kesmala, A. Patanothai and C.C. Holbrook,20082 fixation in eleven peanut (Arachis hypogaea L.) genotypes differing in degrees of resistance to drought.]]>7334342Ramos, M.L.G., A.J. Gordon, F.R. Minchin, J.I. Sprent and R. Parsons,1999Phaseolus vulgaris L.).]]>835763Reddy, T.Y., V.R. Reddy and V. Anbumozhi,2003Arachis hypogaea L.) to drought stress and its amelioration: A critical review.]]>417588Rossum, D.V., A. Muyotcha, H.W.V. Verseveld, A.H. Stouthamer and F.C. Boogerd,1993Bradyrhizobium strain and host genotype, nodule dry weight and leaf area on groundnut (Arachis hypogaea L. sp. fastigiata) yield.]]>154279288Schuman, G.E., M.A. Stanley and D. Knudson,197337480481Serraj, R. and T.R. Sinclair,199636961968Serraj, R., S. Bona, L.C. Purcell and T.R. Sinclair,199752109116Serraj, R., T.R. Sinclair and L.C. Purcell,19992 fixation response to drought.]]>50143155Sinclair, T.R., A.A. Leilah and A.K. Schreffler,19952H2 reduction) response to soil dehydration.]]>16162166Songsri, P., S. Jogloy, T. Kesmala, N. Vorasoot, C. Akkasaeng, A. Patanothai and C.C. Holbrook,20087427439Tomas, M.J.R., S. Fukai and M.B. Peoples,2004866780Toomsan, B., J.F. McDonagh, V. Limpinuntana and K.E. Giller,19951754556Toomsan, B., G. Cadisch, M. Srichantawong, C. Tongsodsaeng, K.E. Giller and V. Limpinuntana,20002 fixation and residual N benefit of pre-rice leguminous crops and green manures.]]>481929Venkateswarlu, B., N. Saharan and M. Maheswari,19902 (C2H2) fixation in cowpea and groundnut during water stress and recovery.]]>25223232Vorasoot, N., P. Songsri, C. Akkasaeng, S. Jogloy and A. Patanothai,2003Arachis hypogaea L.).]]>25283288Wallace, D.H., J.P. Baudoin, J. Beaver, D.P. Coyne and D.E. Halseth et al.,1993862740Wright, G.C., K.T. Hubick and G.D. Farquhar,199142453470Wright, G.C. and R.C. Nageswara Rao,19941994pp: 281-325pp: 281-325