PENGARUH KONSENTRASI PAKLOBUTRAZOL PADA PERTUMBUHAN DAN PENAMPILAN TANAMAN SEDAP MALAM (Polyanthes tuberosa L.) DALAM POT

Abstract

Tuberose (Polyanthus tuberosa L.) is a popular ornamental plant in Indonesia as cut flowers and sowing flowers. It can be used as potted flowers by making the flower stalks shorter. One way to get tuberose that have criteria as potted flowers is by administering growth inhibitors using Paclobutrazol. This research was conducted at the Greenhouse of the Horticultural Building, Faculty of Agriculture, University of Lampung in November to August 2017, aimed to determine the effect of the concentration of paclobutrazol on the growth and appearance of tuberose and to determine the best concentration of paclobutrazol in the appearance of potted tuberose. This study used a randomized block design (RCBD) with a single treatment with 6 levels of paclobutrazol concentration, namely 0, 75, 150, 225, 300, and 375 ppm with 3 replications. Homogeneity of variance was tested by Bartlett test and additivity was tested by Tukey test. Then, it was continued with the F test and with the Least Significant Difference test (LSD) at the 5% level. The results showed that administration of paclobutrazol was significantly affected pseudo stem circumference and all variables of generative growth except the length of the florets. The concentration of paclobutrazol up to 375 ppm has not obtained optimum results. Keywords: Concentration, growth, paclobutrazol, tuberose

Effect of Paclobutrazol on Leaf and Clove (Syzygium aromaticum) Flowering

“…The leaves of the plants treated with paclobutrazol became dense, dark green, and remained for a long period than the control. This explains the increased accumulation of dry matter in stems and roots despite the reduced plant height due to paclobutrazol treatments [16] This explains the increased accumulation of dry matter in stems and roots despite the reduced plant height due to paclobutrazol treatments while tuberose plants tend to increase stem circumference while tuberose plants tend to increase stem circumference [17].…”

APLIKASI PAKLOBUTRAZOL DAN PUPUK NPK UNTUK MERANGSANG PEMBUNGAAN PADA TANAMAN SPATIFILUM (Spathiphyllum wallisii Regel)

“…Pada penelitian Rochmatino et al (2010) pemberian paklobutrazol dengan konsentrasi 300 mg/l menghambat tinggi tanaman bunga krisan. Hasil ini sejalan dengan hasil penelitian Rugayah et al (2020) yang menunjukkan bahwa pemberian paklobutrazol konsentrasi 0-375 mg/l tidak berpengaruh nyata pada beberapa variabel fase vegetatif seperti tinggi tanaman dan jumlah daun tanaman sedap malam.…”

“…Rubiyanti & Rochayat (2015) menjelaskan bahwa pemberian paklobutrazol pada waktu yang lebih cepat akan memperpendek panjang tangkai bunga tanaman mawar batik. Rugayah et al (2020) menjelaskan bahwa pemberian paklobutrazol pada tanaman sedap malam menghasilkan masa mekar bunga lebih lama yaitu 7,22 hari dibandingkan tanaman yang tidak diberi paklobutrazol yaitu 1,87 hari. Widaryanto et al (2011) menjelaskan bahwa pemberian paklobutrazol pada tanaman akan menghasilkan tanaman yang memiliki daun lebih tebal, lebih hijau, dan batang tebal yang mampu menyimpan cadangan makanan, air, dan unsur hara sehingga tanaman dapat bertahan lebih lama, termasuk masa pajang bunga.…”

Sterilization, Multiplication and In Vitro Conservation of Germplasm Taro (Colocasia esculenta [L.] Schott) in BB BIOGEN

“…Media M3 (MS + 2 mg/L Paclobutrazol) dan M4 (MS + 40g/L Manitol) merupakan media yang mampu menginduksi pertumbuhan minimal untuk media konservasi secara in vitro pada planlet talas pada umur minimal 5 bulan. Menurut Rugayah et al (2020), paclobutrazol merupakan salah satu zat penghambat tumbuh yang bersifat menghambat biosintesis giberelin sehingga pertumbuhan vegetatif tanaman terhambat. Kemudian manitol merupakan senyawa stabilisator osmotik yang dapat meningkatkan osmolaritas media, sehingga Tdz 0,25 Tdz 0,5 Tdz 2 BAP 0,3 BAP 1 BAP 3 Tdz 0,25 Tdz 0,5 Tdz 2 BAP 0,3 BAP 1 BAP 3 kontrol penyerapan nutrisi ke dalam jaringan terhambat (Furnawanthi et al, 2017).…”