บทคัดย่องานวิจัย

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Effect of benzyladenine on fruit set and nutrient partitioning of "Empire" apple trees.

Emongor, V. E.; Murr, D. P.;

Discovery and Innovation Year: 2000 Vol: 12 Issue: 1/2 Pages: 37-43 Ref: 26 ref.

2000

บทคัดย่อ

Effect of benzyladenine on fruit set and nutrient partitioning of "Empire" apple trees.

Postbloom application of benzyladenine (BA) at 100 or 200 mg per litre significantly reduced fruit set of "Empire"/M.26 apple trees grown in Canada. The reduction in fruit set was quadratic to increasing BA concentration. BA significantly increased fruit weight, diameter, length and soluble solids content at harvest. BA-treated fruits had a higher titratable acidity and greater fruit flesh firmness at harvest than control fruits. BA treatment had no effect on fruit seed number and length-to-diameter ratio. The reduction in fruit calcium content in 1991 was attributed to larger fruit size induced by BA, resulting in calcium dilution. BA had no effect on leaf and fruit N/Ca, K/Ca and (K+Mg)/Ca ratios, and were below 10, 22 and 25, respectively. BA had no effect on fruit and foliar nutrient concentrations. There were no mineral related postharvest physiological disorders. These results indicate that BA is a good "Empire" apple thinning agent because it does not affect nutrient partitioning and it s

hows potential to be incorporated in the integrated pest management programmes.