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Sudharmawan, A.A.K.
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Neuroscience Physics

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Evaluation of Some Drought Tolerant M5 Rice Genotypes on Proline Content and Yield Components at Different Levels of Field Capacity Raihanun, Siti; Sudharmawan, A.A.K.; Kisman, Kisman; Wangiyana, Wayan; Yakop, Uyek Malik
Journal of Science and Science Education Vol. 5 No. 2 (2024): October
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v5i2.9008

Abstract

Massive conversion of agricultural land, especially on wetlands, has resulted in declining rice productivity, so extending cultivation to drylands is considered appropriate. However, limited water availability is a major constraint that cannot be ruled out, so the procurement of drought-adaptive high-yielding varieties is considered to be the most effective solution. The purpose of this study was to evaluate drought-tolerant mutant genotypes based on proline content and yield component characters at various percentages of water availability. The experiment was arranged using a factorial complete randomized design, the first factor is drought stress consisting of 100% field capacity (K3), 66% (K2), 33% (K1) and the second factor is genotype consisting of inpago unram (P1), MD200-G13-3-11-5 (P2), MD300-G20-8-3-5 (P3), MD200-G24-17-10-8 (P4), MD300-G27-16-9-5 (P5). The observed characters consisted of proline content, flag leaf length, panicle length, filled grain weight and hollow grain weight. The results showed that MD300-G27-16-9-5 (P5) is a mutant plant that has the greatest potential to obtain drought-tolerant traits, although the level of proline produced is not as high as Inpago Unram (P1) and MD200-G24-17-10-8 (P4), but the consistency of adaptation shown by MD300-G27-16-9-5 (P5) when experiencing drought stress tends not to cause a significant decrease in all yield component characters, namely flag leaf length, panicle length, filled grain weight and unfilled grain weight
Anatomical and Physiological Responses of M5 Mutant Red Rice G16 from Gamma Irradiation to Drought Stress Condition in Vegetative Phase Chandraningsih, Ria Ayu; Sudharmawan, A.A.K.; Suliartini, Ni Wayan Sri; Fauzi, M. Taufik; Yakop, Uyek Malik
Journal of Science and Science Education Vol. 5 No. 2 (2024): October
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v5i2.9082

Abstract

Food security and sustainability are facing challenges due to the increase in population and the large amount of dry land that has not been optimized for utilization. Rice cultivated in paddy fields is a problem that must be considered. The use of local varieties should be further studied because it is one of the efforts to increase plant productivity against drought stress. This study aims to assess the anatomical and physiological responses of M5 mutant G16 red rice from gamma irradiation to drought stress in the vegetative phase. The method used was experimental method with field experiments. The experiment was conducted from November 2023 to July 2024 at the Greenhouse of the Faculty of Agriculture, University of Mataram. The experimental design used was Faktorial Completely Randomized Design (CRD) with two factors, the first factor is drought stress consisting of 33% Field Capacity (K1), 66% Field Capacity (K2), 100% Field Capacity (K3) and the second factor is genotype consisting of Inpago Unram (P1), MD200-G13-18-16 (P2), MD300-G20-16-9-5 (P3), MD200-G24-17-10 (P4), MD300-G27-8-3-5 (P5). The result of this study show that MD200-G24-17-10 (P4) was the most responsive genotype to drought stress conditions in the vegetative phase. This was indicated by a decrease in stomatal density and chlorophyll content, as well as an increase in xylem diameter and stele diameter.
Co-Authors Chandraningsih, Ria Ayu Kisman Kisman M. Taufik Fauzi, M. Taufik Raihanun, Siti Suliartini, Ni Wayan Sri Wayan Wangiyana Yakop, Uyek Malik