VIABILITAS DAN VIGOR BERBAGAI VARIETAS TRUE SHALLOT SEED DENGAN PERENDAMAN JENIS ZAT PENGATUR TUMBUH (ZPT) ALAMI

One of the keys to successful shallot cultivation with True Seed of Shallot (TSS) is determined by viability and vigor at the nursery. The aim of the study was to determine the effect of varieties and types of natural Plant Growth Regulatory (PGR) on germination and TSS vigor index. The study was conducted at the Seed Technology Laboratory of the Agricultural Development Polytechnic of Yogyakarta Magelang in July 2021 using a factorial Completely Randomized Design (CRD). The first factor is shallot variety (V) consisting of 3 levels: V1 = Sanren, V2 = Maserati, and V3 = Lokananta. The second factor is Types of Natural plant Growth Regulators (Z) consisting of 4 types: Z0 = aquadest, Z1 = Shallot Extract, Z2 = bean sprout extract, and Z3 = young coconut water. Each treatment was repeated 3 times. Parameters observed were germination, growth speed and vigor index. Data analysis was carried out using a variance test (F test) and Duncan's multiple distance test (DMRT) with a level of 0.05. The results showed that the TSS variety significantly affected germination and growth speed. The type of natural PGR did not significantly affect the germination, but it did affect the growth speed. TSS varieties and natural PGR types significantly interacted with the vigor index parameter. The best vigor index was achieved when the Lokananta variety was treated with distilled water. Keywords: Shallot, bean sprouts, coconut water, germination, vigor.