Improvement of shallot flowering (Allium cepa var. ascalonicum) of Bauji variety in the lowland area of Jember through vernalization and GA3 concentrations

Siswadi, Edi and Kurniasari, Leli and Yuliana, L (2020) Improvement of shallot flowering (Allium cepa var. ascalonicum) of Bauji variety in the lowland area of Jember through vernalization and GA3 concentrations. IOP Conference Series: Earth and Environmental Science, 411 (1). 012066.

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Abstract

Usage of true shallot seed (TSS) can increase onion production. TSS production in the lowlands is still an obstacle by suboptimal flowering of shallots propagated through seed tubers. There are several varieties of shallots that have not been successfully flowered. The treatments of vernalization and administering GA3 are expected to stimulate the flowering of Bauji variety. The purpose of this study was to improve the flowering of the onion varieties of Bauji in the Jember lowlands (89 m asl). The study was conducted from June to October 2019. The study used a factorial completely randomized block design (CRBD), namely vernalization as the first factor and GA3 concentration as the second factor with four replications. Data were analyzed using analysis of variance and continued with the Duncan Multiple Range Test (DMRT) at α 5% level. The results showed that independently, vernalization had a significant effect on the parameters of the time the umbel appeared, the percentage of flowering plants, and the number of umbles per plant. Also, vernalization treatment had significantly affected the parameters of the number of flowers per umbel, the number of capsules per umbel, and the percentage of capsule formation per umbel.

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