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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA)
I Wayan Sudika
University of Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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Genetic Parameters of Yield Character and Yield Components of Pigmented Rice Genotype Grown in Gogo Amilia Qurota A’yun; I Gusti Putu Muliarta Aryana; I Wayan Sudika; Ni Wayan Sri Suliartini; M. Taufik Fauzi
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.9270

Abstract

Increased public interest in red rice and black rice has triggered breeders to develop superior varieties that have high yields and are tolerant of the threat of drought. Genetic parameters are the basis needed for breeding to develop superior varieties. This research aims to examine the genetic parameters of pigmented rice genotypes grown upland. The experiment was carried out in June – September 2024 experimentally in the field using a gogo system, namely in Tampak Siring Village, Batukliang, Central Lombok, NTB. The design used was a Randomized Block Design (RAK) with 21 treatments, 10 red rice lines, 4 black rice lines, 4 parent lines, and 2 comparison varieties. Obtained 63 experimental units by repeating each treatment three times. The data collected was then analyzed using a one-way Analysis of Variance (ANOVA) test with a Randomized Block Design (RAK) model at a confidence level of 95% (α=5%), genetic diversity coefficient (KKG) formula, heritability and genotypic correlation. Referring to the analysis that has been carried out, the findings of the coefficient of genetic diversity and heritability of the number of full grains, weight of 100 grains, yield per plot of red rice and black rice lines are in the high category. The number of productive tillers, weight of 100 grains and weight of grain per hill had a significant positive correlation with the yield per plot, while the number of empty grain parameters had a significant negative correlation with the yield per plot.
Weed Biology and Ecology Studies: Diversity, Dominance and Prediction of Yield Loss of Corn (Zea mays L.) Due to Broadleaf Weeds Competition in Dryland I Ketut Ngawit; I Wayan Sudika; I Wayan Suana
Jurnal Penelitian Pendidikan IPA Vol 10 No 5 (2024): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i5.7229

Abstract

The aim of the research was to determine the diversity, distribution, dominance, and yield loss of corn due to competition from broadleaf weeds. Descriptive research method with direct survey techniques of research objects. Data were collected using 10 sample plots measuring 1 m2, which were placed using random sampling. Observation parameters include the population and dry biomass weight of weeds and corn. The data was analyzed descriptively and comparatively by calculating density, frequency, and dominance to obtain an important value index and summation diminance ratio (SDR). The results of the research showed that 14 species of broad-leaved weeds were found with high species diversity, distribution, dominance, and abundance indices. The competitiveness and relative weighted dominance of six weed species, namely Amaranthus spinusus, Amaranthus gracilis, Synedrella nodiliflora, Acalypha indica, Ageratum conyzoides, and Alternanthera philoxeroides, are higher than those of other weed species, causing corn yield losses of 5.56%–21.90%. Therefore, these six weed species must be controlled. 
Agronomic Performance and Yield Potential of Promising Pigmented (Red and Black) Rice Lines In Medium-Altitude Paddy Fields I Gusti Putu Muliarta Aryana; I Wayan Sudika; Ni Wayan Sri Suliartini; Fitriani Fitriani
Jurnal Penelitian Pendidikan IPA Vol 12 No 4 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i4.11522

Abstract

This study aimed to evaluate the agronomic traits and yield performance of several promising pigmented rice lines, including red and black rice, grown in medium-lowland paddy fields. The research was conducted from March to June 2025 at an altitude of 402 meters above sea level in Tampak Siring Village, Batukliang District, Central Lombok Regency. The experimental method used was a Randomized Complete Block Design (RCBD) consisting of 21 treatments, including 11 red rice lines, 4 black rice lines, and 4 parental lines (IPB3S, Situ Patenggang, Baas Selem, and the red rice promising line F2BC4P19-36), along with 2 check varieties, Impago Unram 1 and IR64. Each treatment was replicated three times, resulting in a total of 63 experimental units. The observed data were analyzed using analysis of variance (ANOVA), and significant differences among treatments were further tested using Duncan’s Multiple Range Test (DMRT) at a 5% significance level. The results showed that the agronomic performance of both red and black rice lines exhibited medium maturity, with flowering time ranging from 83 to 93 days after sowing and harvesting time from 120 to 129 days after sowing. The number of productive tillers ranged from 12 to 19 tillers, panicle length ranged from 23 to 27 cm, the number of filled grains per panicle ranged from 130 to 147 grains, and grain weight per clump ranged from 33 to 41 grams. The highest grain yield was recorded in the red rice line G-2M (F7 IPB3S/F2BC4P19-63/FAT/F2BC44P19-63-PD3/15) at 4.99 t/ha, which was higher than its parental lines IPB3S (G1-6IPB3S) at 4.31 t/ha and GH Merah (G-20GHBM) at 3.83 t/ha. Among black rice lines, G-12H (F11BLK.SP/BS 2/1/1/P4) yielded 4.42 t/ha, compared to Baas Selem (G-18BS) at 3.86 t/ha, Situ Patenggang (G-17SP) at 4.63 t/ha, and the check variety IR64 (G-21IR64) at 3.60 t/ha.
Co-Authors Amilia Qurota A’yun Fitriani Fitriani I Gusti Putu Muliarta Aryana I Ketut Ngawit I Wayan Suana M. Taufik Fauzi Ni Wayan Sri Suliartini