Pengaruh pemberian zat retardan terhadap pertumbuhan dan hasil ubi pada dua kultivar kentang (Solanum tuberosum L.) di dataran medium

Abstract

49 Sumadi, dkk. : Pengaruh pemberian zat retardan terhadap pertumbuhan dan hasil ubi pada dua kultivar kentang (Solanum tuberosum L.) di dataran medium Sumadi • E. Suminar • Murgayanti • A. Nuraini Pengaruh pemberian zat retardan terhadap pertumbuhan dan hasil ubi pada dua kultivar kentang (Solanum tuberosum L.) di dataran mediumEffect of retardants substances on growth and seed tuber yield productivty of two potato cultivars (Solanum tuberosum L.) at medium land Abstract The objective of this study was to obtain information on potato varieties and the type and concentration of retardants that can support growth, development, quantity and quality of potato seeds in medium land. The research method used was the split plot design, the main plot was the potato variety, Nadia and Granola and the subplot wasthe type and concentration of the used retardants: paklobutrazol (0, 40; 120 mgL -1 ) and coumarin(45; 90;135 mgL -1 ). The result showed that kind of variety and retardants substance affectedon growth and development of potato seed. There are have an interaction effect between variety and substance retardants for the weight of potatoes tuber per plant, butno interaction for plant height, chlorophyll content, number of tuber per plant, tuber weight per plot and the percentage of potatoes size tuber were produced. The application of retardan Nadia Varieties produced tuber weight per plant higher than the granola variety,whereas granola variety produced tuber sizes S and M classes higher than Nadia variety.Sari Tujuan dari kegiatan penelitian ini adalah untuk mendapatkan informasi mengenai kultivar kentang dan jenis serta konsentrasi zat retardan yang dapat mendukung pertumbuhan dan perkembangan serta kuantitas dan kualitas hasil ubi bibit kentang di dataran medium. Metode penelitian yang digunakan adalah

The Effect Of Paclobutrazol Concentration And Types Of Organic Liquid Fertilizer On The Growth And Production Of Tomató (Solanum Lycopersicum L.)

“…The higher the concentration of paclobutrazol given, the more the plants will experience stem shortening. This is in accordance with research of (Sumadi et al, 2015) which states that paclobutrazol applied to plants causes inhibition of plant height because paclobutrazol inhibits gibberellin biosynthesis which will cause a decrease in the cell division cycle. According to (Purba et al, 2021) which states that gibberellins are able to increase cell growth by accumulating cellulose and eventually the cells only enlarge for growth so that the plant elongates.…”

Does the Daminozide Application Contribute to Improve Chrysanthemum Quality?

“…In inhibiting biosynthesis of gibberellin, daminozide will ultimately reduce cell proliferation, and this cell proliferation will result in the reducing of leaf expansion and stem extension (Sumadi, Suminar, Murgayanti, & Nuraini, 2015). The mechanism of decreasing height by daminozide initiates by inhibition of the active GA formation, which plays a role in stimulating cell elongation.…”