02429naa a2200313 a 450000100080000000500110000800800410001910000200006024501050008026000090018550001650019452013330035965000160169265000240170865000170173265300160174965300380176565300320180365300290183565300260186470000170189070000230190770000200193070000160195070000170196670000210198370000190200477300920202311228482018-07-23       2007    bl uuuu     u00u1 u    #d1 aSILVA, M. F. da  aInheritance of resistance to soybean cyst nematode races 3 and 14 in soybean RIL and F2 populations.  c2007  aTítulo em portugês: Herança da resistência ao nematóide de cisto da soja, raças 3 e 14, em populações de linhagem endogâmica recombinante e F2 de soja.  aThe objective of this work was to evaluate the soybean inheritance of resistance to cyst nematode races 3 and 14. The following populations where evaluated: one population of recombinant inbred lines (RILs) [Hartwig (resistant) x Y23 (susceptible line)] for races 3, 14 and 9; one population of families F2:3 [M-SOY 8001 (resistant) x MB/BR 46 - Conquista (susceptible)] for race 3; and one population of families F2:3 [(S5995 (resistant) x BRSMG Renascença (susceptible)] for race 14. In RIL populations, four epistatic genes were identified which conditioned resistance to race 14, and three epistatic ones for resistance to races 3 and 9. The lack of one gene provided moderate resistance under all situations. The highest number of genes for resistance to race 14 points out that genes responsible for lower effects might be involved. In population F2:3 from M-SOY 8001 x MB/BR 46 - Conquista, one recessive gene for moderate resistance and two recessive genes complete resistance to race 3 were identified. Two recessive genes conditioning moderate resistance to race 14 were identified in population F2:3 from the crossing S5995 x BRSMG Renascença. These results will be useful in designing crossings, involving these parentals, with higher possibility to accumulating genes that provide resistance to several SCN races.  aGlycine Max  aHeterodera Glycines  aMelhoramento  aimprovement  alinhagem endogâmica recombinante  anematóide do cisto da soja  arecombinant inbred lines  asoybean cyst nematode1 aSCHUSTER, I.1 aCERVIGNI, G. D. L.1 aSILVA, J. F. V.1 aDIAS, W. F.1 aFERREIRA, A.1 aBARROS, E. G. de1 aMOREIRA, M. A.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 42, n. 12, p. 1735-1740, dez. 2007