Effect of NAA on Rooting Ability of Nakon Ratchasima 60 Mulberry Variety

Abstract

In contrary with the yield of 100% higher than the local variety, the rooting ability of cuttings of Nakon Ratchasima mulberry variety was usually low. In this study, different levels of NAA (1-naphthyl acetic acid) were used with different periods of dipping time. It was found that dipping the in 1,000 ppm. solution for 35 seconds dramatically increased rooting ability by 41.5% and with 38.5% survivals where as cuttings in the control treatment (water) gave only 32.% rooting. Survivals of cuttings decreased to 32.0% at 4,000 ppm. for 20 seconds and lowered to 28.8% at 7,000 ppm. for 5 seconds. Depping in NAA solution of 100 ppm. for 24 hours only gave 11.0% rooting but it was increased to 20.0% by adding 3% sucrose.