CHILLING AND GA3 EFFECTS ON GROWTH AND DEVELOPMENT OF 'NEMAGUARD' AND 'GF 305' PEACHES
The effect of different chilling and gibberellin treatments on growth and development of the peach rootstocks Nemaguard and GF305 was studied. A factorial experiment was designed combining cold treatments (0, 5, 15 and 30 days at 4°C temperature) and GA3 concentrations (0, 100 and 200 mg/L). The variables considered were: percentage of germination, number of internodes, plant height and the ratio plant height/number of internodes. Results showed an overall growth increase as a consequence of chilling and gibberellin addition; however the behaviour of the two assayed rootstocks was slightly different. In general terms, Nemaguard responded well to 5 days cold and chilling treatments did not improve growth in a relevant way, whereas GF305 showed a more gradual effect of the chilling and gibberellin treatments on the studied parameters.
Leida, C., Conejero, A., Ríos, G., Llácer, G. and Badenes, M.L. (2012). CHILLING AND GA3 EFFECTS ON GROWTH AND DEVELOPMENT OF 'NEMAGUARD' AND 'GF 305' PEACHES. Acta Hortic. 962, 239-243
Prunus persica, breeding, immature embryos, germination efficiency, gibberellin