EFFECT OF GA3 ON THE TIME OF MATURITY, FIRMNESS, COLOR AND SIZE OF PEACH FRUIT.

in HortScience
View More View Less
  • 1 Department of Plant and Soil Science, Southern Illinois Univ., Carbondale, IL 62901.

G A3 sprays (50, 65, 100 mg/L) were applied to six single tree replications of mature `Redhaven' and `Cresthaven' trees on 23 June 1989 to measure their effect on fruit maturity and the relationship among its indices. There was little effect of GA3 on fruit diameter except on the final harvest when the treated trees had 6% larger fruits. Seventy-two percent of the total yield of `Redhaven' control trees was mature at the first picking while only 30% of total yield from treated trees was ready on the same date. GA3 had a similar effect on fruit maturation on `Cresthaven'. Fruit on treated `Redhaven' trees were on average 1.3 kg firmer than control. Furthermore, GA3 increased the firmness over control on the shaded and sunny side and the suture of the fruit and no interaction between the location of pressure test and GA3 treatments was observed. There was a slight reduction in yellow ground color of G A3 treated fruits. The effect of GA3 on the relationship between individual fruit color and firmness will be examined. The effects of 1990 GA3 sprays on peach maturity and quality will also be presented.

If the inline PDF is not rendering correctly, you can download the PDF file here.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 66 14 0
PDF Downloads 60 23 1