APS-Journal Jan 2017

J ournal of the A merican P omological S ociety

14

Table 3. The effect of plant growth regulator (PGR) treatments on flexural strength (Force in Newton), graft cross-sectional area (GCSA), scion cross-sectional area (SCSA), force per graft cross-sectional area (F/GCSA), force per scion cross-sectional area (F/SCSA), and height of ‘Scilate’ and ‘Gala’ apples grafted on ‘Geneva 41’ rootstock. Values are averaged over scion cultivar, and treatments are ranked for each parameter. PGR Application Force GCSA SCSA F/GCSA F/SCSA Height (N) (cm 2 ) (cm 2 ) (N·cm -2 ) (N·cm -2 ) (cm) Mean Rank Mean Rank Mean Rank Mean Rank Mean Rank Mean Rank BA Latex2 566 1 8.56 1 1.94 1 65.9 7 292 4 204 4 S-ABA Foliar1 511 2 6.78 12 1.71 9 75.3 1 301 2 204 5 GA 4+7 Latex1 483 3 7.27 6 1.93 2 65.2 9 249 17 196 11 NAA Latex1 468 4 7.29 5 1.63 11 63.1 12 289 6 206 1 S-ABA Latex1 461 5 6.89 10 1.81 6 66.4 6 252 16 205 2 Ethephon Latex1 460 6 7.70 2 1.77 7 60.3 19 264 12 200 6 BA Latex1 451 7 6.90 9 1.84 4 65.2 8 242 20 193 19 Control Latex1 451 8 6.73 13 1.60 12 67.1 4 287 8 196 12 NAA Foliar2 445 9 7.49 4 1.74 8 62.9 13 261 13 195 14 S-ABA Foliar2 444 10 6.23 20 1.53 15 70.7 3 290 5 193 17 S-ABA Latex2 441 11 7.57 3 1.92 3 57.9 20 229 21 199 7 GA47 Latex2 439 12 7.04 7 1.83 5 62.3 15 242 19 197 8 IBA Latex1 428 13 6.02 22 1.44 20 73.3 2 302 1 205 3 ACC Latex1 428 14 6.98 8 1.69 10 62.4 14 257 14 194 16 ACC Foliar2 428 15 6.69 14 1.47 18 63.7 10 293 3 190 21 NAA Foliar1 417 16 6.26 18 1.50 16 66.5 5 280 9 193 18 Ethephon Latex2 404 17 6.23 19 1.48 17 63.5 11 271 10 192 20 ACC Latex2 396 18 6.43 16 1.58 13 61.0 17 252 15 196 10 IBA Latex2 394 19 6.86 11 1.42 22 56.6 21 270 11 194 15 NAA Latex2 394 20 6.49 15 1.42 21 61.1 16 288 7 197 9 Control Untreated 362 21 6.05 21 1.46 19 60.5 18 247 18 190 22 ACC Foliar1 345 22 6.26 17 1.56 14 55.9 22 224 22 195 13