Original Research Article
Year: 2020 | Month: September | Volume: 7 | Issue: 9 | Pages: 61-68
Growth Response of Rose (Rosa damascena Mill.) Cuttings Due to the Concentration and Soaking Duration of the Plant Growth Regulator (PGR)
Riyanti
Department of Agrotechnology, Faculty of Agriculture, Universitas Amir Hamzah, Medan, Indonesia
ABSTRACT
This study aims to determine the effect of concentration and soaking duration of Plant Growth Regulator (PGR) Growntone on rose (Rosa damascena Mill.) cutting growth. This research was conducted at the Experimental Garden of the Faculty of Agriculture, University of Amir Hamzah, Medan, Medan Estate Village, Percut Sei Tuan District with an altitude of ±25 meters above sea level, which was conducted from March to May 2020. This study used a factorial randomized block design (RBD) with two factors studied, namely the first factor was the PGR Growtone concentration, which consisted of 4 levels, namely K0 (0 mg/10 ml water), K1 (3 mg/10 ml water), K2 (6 mg/10 ml water), K3 (9 mg/10 ml water),and the second factor is the soaking duration for PGR Growtone (L) which consists of 4 levels, namely L0 (0 minute), L1 (30 minutes), L2 (45 minutes), and L3 (60 minutes). Parameters observed included shoot emergence time (days), shoot length (cm), number of shoots, and root length (cm). The results showed that the PGR Growtone concentration had a very significant effect on shoot emergence time, shoot length, and root length, but did not significantly affect the number of shoots. The best concentration is obtained in the treatment K3 (9 mg/10 ml water). The soaking duration for PGR Growtone had a very significant effect on shoot emergence time, shoot length at 60 days after planting, and root length. The best soaking duration was obtained in the treatment L1 (soaking duration 30 minutes). The interaction between the concentration and soaking duration of PGR Growtone only had a significant effect on shoot emergence time, where the best treatment combination was obtained in the treatment K3L1 (concentration 9 mg/10 ml water and soaking duration 30 minutes).
Keywords: Plant growth regulator, concentration, soaking duration, rose cutting
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