Pengaruh Kadar Giberelin dan Kinetin terhadap Pertumbuhan dan Hasil Beberapa Varietas Stroberi

Abstract

This research was conducted at Kalikutao village, district of grabag regency of Magelang, Central Java, since May to October 2007. The aim o.f research was to study the e.ffects of gibberelin and kinetin concentrations on the growth and yiekd o.fsome strawberry varietes (Fragaria ananansa Duchesene). Two treatment.factors were arranged in Randomized Complete Block Design with four replications. The first factor was gibherli;; and kinetin consentrations consisted of nine levels i.e´. GA 0ppm +kinetin 0ppm, GA 0ppm .,- kinetin J 0ppm.GA 3 0 ppm + kinetin 20 ppm. GA 5 ppm T kinetin 0 ppm ,GA 5 ppm - JO ppm, GA 5ppm - kinetin 20 ppm, GA3 JO ppm- kinetin 3 ppm, GA J 0ppm - kine tin J 0ppm dan GA J 0 ppm kinetin 20 ppm. The three strawberry varietes i.e. Hokowaze, California and Lembang local were treated as the second.factor. The result of this research showed that GA and kinetin concentration increased the growth and yield of strawberry. Concentrations GAJO ppm, kinetin JO ppm and combination GA JO ppm - kinetin JO ppm incrased relative growth rate, number ofjlowe1; number o.lfi1iit pera plant, lleight o.ffh1it perplant and delayed leaf senescence. Combination GAJ 0 ppm ·kinetin JO ppm was the besat concentration resulted in the longest delayed leaf senescence at about two weeks. Hokowaze variety produced J 25 gfmits per plant which have potential to be planted in Magelang Dictrict at 650 meters above level. Key Words: Gibber/in and kine tin, strawberry mriely