02262naa a2200325 a 450000100080000000500110000800800410001902400330006010000210009324501160011426000090023052013130023965000220155265000170157465000240159165300230161565300230163870000290166170000190169070000240170970000220173370000170175570000240177270000180179670000170181470000300183170000160186170000200187777300390189721216282020-04-20       2019    bl uuuu     u00u1 u    #d7 a10.3390/agronomy91207922DOI1 aKAMPHORST, S. H.  aCan genetic progress for drought tolerance in popcorn be achieved by indirect selection?h[electronic resource]  c2019  aThe objective of this study was to estimate the direct and indirect eects of agricultural, morphological, physiological, and root traits of popcorn lines, under two conditions of water supply: full irrigation (FI) and drought stress (DS).Acomplete randomized block design with three replications was used to evaluate the following traits: expanded popcorn volume per hectare (EPV), 100-grain weight (100GW), mean ear length, mean ear diameter, number of grains per row (NGR), prolificacy (PRO), anthesis to silking interval, tassel length, number of tassel branches, plant height, shoot dry matter, green index (SPAD), and canopy temperature depression (CTD), root angle (RA), tap root volume (TRV), and crown root volume (CRV). Analyses of variance and path analysis, and subsequent partitioning of direct and indirect eects were performed. For the traits EPV, PRO, CTD, RA, CRV and TRV, the genotype x environment interaction was significant. Drought stress had significant eects on EPV (􀀀7.15%), 100GW (􀀀23.52%), SPAD (􀀀29.31%), CTD (87.15%), RA (24.54%), and CRV (44.89%). The traits NGR and SPAD were found to be decisive for the expression of EPV. The exploitation of these traits by indirect selection is expected to induce increments in EPV in environments under DS and FI.  aGenética Vegetal  aMilho Pipoca  aResistência a Seca  aSeleção indireta  aTolerância a seca1 aAMARAL JÚNIOR, A. T. do1 aLIMA, V. J. de1 aGUIMARAES, L. J. M.1 aSCHMITT, K. F. M.1 aLEITE, J. T.1 aSANTOS, P. H. A. D.1 aCHAVES, M. M.1 aMAFRA, G. S.1 aSANTOS JÚNIOR, D. R. dos1 aCRUZ, C. D.1 aCAMPOSTRINI, E.  tAgronomygv. 9, article 792, 2019.