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All Journal Biology, Medicine, & Natural Product Chemistry Entrepreneurship Bisnis Manajemen Akuntansi (E-BISMA)
Tri Wulandari
UIN Raden Intan Lampung
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Medicine & Pharmacology Public Health Social Sciences

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Pengaruh kualitas produk, harga, dan promosi terhadap keputusan pembelian mie instan merek Indomie Nikmah Baqiyyatus Shalihah; Oktami Imtihani MK; Tri Wulandari; Rizki Hidayat; Andi Prayoga
Entrepreneurship Bisnis Manajemen Akuntansi (E-BISMA) Vol.3, No.2 (2022): Desember 2022
Publisher : Universitas Widya Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37631/ebisma.v3i2.735

Abstract

This research was conducted to determine the effect of product quality, price, and promotion on purchasing decision at instan noodle Indomie brand. This research is the result of a survey to students in Lampung. The sample use is 70 respondents. The process of distributing questionnaires to respondents was carried out online. This research method is quantitative and the technique used is a purposive sampling. This research uses test data validity and reliability tests. This research was analyzed with Smart PLS program. This results of the analysis obtained show that the product quality, price, and promotion variable has a positive and significant effect on purchasing decision instan noodle Indomie brand. And the price variable is the most dominant on purchasing decisions compared to other variable.
Morphological and Cytological Characteristics of Tomato Plants (Solanum lycopersicum L.) Induced by Tapak Dara (Catharanthus roseus (L.) G. Don) Extract Tri Wulandari; Ika Listiana; Ovi Prasetya Winandari
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1171-1176

Abstract

Polyploidy is commonly induced using antimitotic agents such as colchicine, which is imported and relatively expensive, therefore, alternative antimitotic agents derived from local resources are needed. There are three main classes of antimitotic agents: taxanes, vinca alkaloids, and colchicine. Taxanes are obtained only from the bark of the western yew plant, colchicine is derived from Colchicum autumnale L., and vinca alkaloids are obtained from the tapak dara plant (Catharanthus roseus).  Therefore, the tapak dara plant has great potential as a source of antimitotic agents other than colchicine. This study aimed to determine the effect of tapak dara flower extract on the morphological and cytological characteristics of tomato plants (Solanum lycopersicum L.). The research used a completely randomized design with four treatment levels and five replications: P0 = control treatment, P1 = 0.05% concentration, P2 = 0.1% concentration, and P3 = 0.15% concentration, with a soaking duration of 10 hours. The observed parameters included germination percentage (%), plant height, number of leaves, number of flowers, and chromosome number. Data were analyzed using one-way ANOVA followed by Duncan’s multiple range test at the 5% significance level. The results showed significant effects on the number of leaves, number of flowers, and chromosome number. Treatment P1, with a concentration of 0.05%, was the best treatment.
Co-Authors Andi Prayoga Ika Listiana Nikmah Baqiyyatus Shalihah Oktami Imtihani MK Ovi Prasetya Winandari Rizki Hidayat