Inherent status of biochemical constituents and adventitious rooting in simultaneous grafts of peach [Prunus persica (L.) Batsch]

Effect of different concentrations of IBA, i.e. 0,100 (24 h soaking); 500,1000,1500 and 2000 ppm (2 min. dip) on the rooting of cuttings of peach cv. Sharbati alone and in combinations with simultaneous grafts of Florda Prince, Earli Grande and Shan-i-Punjab scion cultivars was studied during 4^th week of December and 2^nd week of January. In December, highest rooting of 90.01 per cent was recorded in cvs. Earli Grande and Shan-i-Punjabfollowed by 78.25 per cent success in Sharbati. In January, 2000 ppm IBA caused highest rooting success of cuttings/simultaneous grafts of Shan-i-Punjab (90.01%). Irrespective of the time of grafting, cv. Florda Prince exhibited the lowest rooting success with different IBA treatments. IBA @ 100 ppm during December produced maximum plant height, root length in Sharbati cuttings, while greater number of roots per plant were produced in Shan-i-Punjab. The higher rooting and survival of cuttings/simultaneous grafts was positively correlated with total phenols, carbohydrate and C:N ratio, while rooting had negative correlation with the inherent N status of cuttings.