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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA)
Ida Ayu Putri Darmawati
Udayana University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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GA3 and KCl Application as An Effort to Improve the Quality of Local Bali Grapes (Vitis vinifera L. var. Alphonso Lavallee) Julfikar Julfikar; Ida Ayu Putri Darmawati; Rindang Dwiyani; Made Sri Sumarniasih; Anak Agung Sugiarta; Ni Luh Made Pradnyawathi; Yuyun Fitriani; I Made Basma Redana
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.12958

Abstract

The global demand for table grapes continues to rise, driven by consumer preference for sweet, high-quality, and seedless fruit. Local varieties such as Bali grape (Vitis vinifera L. var. Alphonso Lavallee) remain less competitive than imported grapes due to small berry size, high acidity, and seed presence. This study evaluated the optimal concentrations of gibberellic acid (GA3) and potassium chloride (KCl) and their interaction effects on Bali grape fruit quality. The experiment used a factorial randomized complete block design with two factors: GA3 at 0, 50, 100, and 150 ppm, and KCl at 0 and 300 g per plant, with five replications. The results showed that GA3 significantly affected all observed parameters. Application of GA3 at 150 ppm produced the longest clusters, largest berry diameter, highest berry weight, and greatest sugar content, while simultaneously reducing seed number and seed weight, indicating induced parthenocarpy. KCl application significantly increased sugar content and berry diameter but did not influence seed characteristics. A significant interaction between GA3 150 ppm and KCl 300 g per plant was observed, resulting in the highest number of berries per cluster and the highest sugar concentration. Combined GA3 and KCl application improved fruit quality and enhanced Bali grape competitiveness
Radicle Emergence Test of Various Sorghum Varieties (Sorghum bicolor (L.) Moench) Using the Between Paper and Top of Paper Germination Methods Noviana Miming Dwi Wulansari; I Gede Wijana; Ida Ayu Putri Darmawati
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.13604

Abstract

High reliance on rice and limited national production drive the need to develop sorghum as an alternative food crop. This development requires high-quality seed and rapid, reliable testing methods. This study evaluated the effect of germination methods on radicle emergence (RE), assessed varietal differences in RE rate, and examined the ability of the RE test to estimate germination percentage (GP). The experiment used a nested design with germination method as the main factor, between paper and top of paper, and five sorghum varieties nested within each method, namely Mandau, Super 1, Bioguma 1, Bioguma 2, and Bioguma 3, with four replications. Top of paper detected radicle emergence earlier than between paper, with the optimal observation time at 48 hours. Super 1 showed the highest RE and GP, followed by Bioguma 3, while Mandau and Bioguma 2 showed lower performance. Regression analysis between RE and GP produced the equation y = 1.038x − 3.32 with R² = 0.7474, indicating a strong positive relationship. These results demonstrate that RE observation at 48 hours provides a rapid and accurate indicator of sorghum seed viability and supports the selection of superior varieties for seed production
Co-Authors Anak Agung Sugiarta I Gede Wijana I Made Basma Redana Julfikar Julfikar MADE SRI SUMARNIASIH Ni Luh Made Pradnyawathi Noviana Miming Dwi Wulansari Rindang Dwiyani Yuyun Fitriani