Flowering and yield of true shallot seed from bulb and different seedling age vernalized at low temperature

True Shallot Seed (TSS) is an alternative source of shallot (Allium cepa var. ascalonicum) seeds. The constraint of TSS production currently being developed is bulb seeds availability which is limited in a timely manner, amount and quality. The study aim was to observe flowering response from bulb-to-seed method compared to seedling (seed-to-seed method). The study was conducted in Margahayu Experimental Field, IVegRI, Lembang (1,250 m asl) from February to December 2017. The randomized block design with 4 replications was used. The treatments include bulb seeds that are vernalized at 10 °C for 4 weeks, vernalized TSS then 6 weeks sowing, vernalized seedlings aged 4, 5, 6, and 7 weeks at 10 °C for 3 weeks, and non-vernalized seedlings aged 6 weeks. The variety used is Trisula. Observations included vegetative and generative parameters. Data were analysed with ANOVA and DMRT test at the 5% level. The results showed that TSS plant material resulted in higher flowering and TSS production compare to that derived from bulb. Six-weeks vernalized seedling produce the highest florets number per umbel, seed weight per umbel and per plant. Results of the experiment indicate that TSS from seedling showed potential for further development.