Abstrak


Pengaruh pemberian sitokinin dan asam giberelat (ga3) terhadap perkecambahan biji dan pertumbuhan tanaman pule pandak (Rauvolfia verticillata lour.)


Oleh :
Sri Lestari - M0405062 - Fak. MIPA

ABSTRACT The purpose of this research are to study the effect of cytokinin and gibberellic acid (GA3) for seed germination and growth of R. verticillata L. and determine the best for the treatment combination that have an optimal effect to the seed germination and growth of pule pandak (R. verticillata L.). The research had been done in randomized complete design by combination treatment of gibberellic acid and cytokinin that consist of 6 treatment combination are GA3 0 ppm/ cytokinin 0 ppm, GA3 50 ppm/ cytokinin 0 ppm, GA3 0 ppm/ cytokinin 50 ppm, GA3 50 ppm/ cytokinin 50 ppm, GA3 50 ppm/ cytokinin 75 ppm, GA3 75 ppm/ cytokinin 50 ppm and 8 replicates. The treatment were given by soaking the mature seed on the hormone solution. Some parameters such as germination and growth parameter were measured. The result shows that presoaking treatment with GA3 50 ppm more influenced increase for time of germinating, germination precentage, plant height, leaf number, leaf wide, and dry weight than presoaking use cytokinin 50 ppm. Presoaking treatment using combination GA3 and cytokinin (G50S50) give significant influence to increase fresh weight and dry weight. Combination GA3 and cytokinin in concentration G50S75 give influence to increase fresh weight and dry weight plant. Combination GA3 and cytokinin in concentration G75S50 give influence to increase germination precentage, plant height, leaf number, and leaf wide. Kata kunci: Rauvolfia verticillata, cytokinin, gibberellic acid (GA3), germination, growth