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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Agroteksos
I Wayan Sutresna
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Materials Science & Nanotechnology Physics Social Sciences

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KARAKTER MORFOLOGI BEBERAPA GALUR KACANG TANAH F4 (Arachis hypogaea L.) TERHADAP CEKAMAN NAUNGAN Rica Lifiani; I Wayan Sutresna; A Farid Hemon
AGROTEKSOS, Jurnal Ilmiah Ilmu Pertanian Vol 31 No 1 (2021): Jurnal Agroteksos April 2021
Publisher : Fakultas Pertanian Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (800.795 KB) | DOI: 10.29303/agroteksos.v31i1.655

Abstract

Penelitian ini bertujuan untuk mengetahui karakter morfologi beberapa galur kacang tanah F4 terhadap cekaman naungan. Penelitian ini menggunakan Rancangan Acak Lengkap petak terbagi. Petak utama: perlakuan tanpa naungan (n0) dan perlakuan cekaman naungan (n1) dengan menggunakan paranet 65%. Anak petak: 15 galur kacang tanah generasi F-4 (BISON, G 200-I, G 300-II, G1-UI, G3T4, TAKAR, G2T1, G7-UIII, G2T3, G3T7, G3T10, DOMBA, G2D2, G3D3, G3D8). Kombinasi perlakuan diulang sebanyak 3 kali. Hasil penelitian menunjukan bahwa galur kacang tanah berinteraksi secara nyata pada karakter morfologi jumlah cabang. Beberapa galur kacang tanah generasi F4 menunjukan karakter morfologi yang berbeda seperti tinggi tanaman, jumlah cabang, umur berbunga, jumlah bunga, dan berat berangkasan segar tanaman. cekaman naungan semuanya menghasilkan karakter morfologi yang berbeda kecuali jumlah kerapatan trichoma dan jumlah polong cipo. Galur-galur kacang tanah yang memiliki sifat agak toleran terhadap cekaman naungan yaitu G3T4, G2T1, G3T7, G3T10, DOMBA, G3D3 dan G3D8.
KAJIAN PARAMETER GENETIK KARAKTER KUANTITATIF TANAMAN JAGUNG (Zea mays L.) DI LAHAN KERING Fasia Juliati; I Wayan Sudika; I Wayan Sutresna
AGROTEKSOS, Jurnal Ilmiah Ilmu Pertanian Vol 33 No 1 (2023): Jurnal Agroteksos April 2023
Publisher : Fakultas Pertanian Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/agroteksos.v33i1.786

Abstract

The narrow-sense heritability and expected selection response are very important to be recognized in the F2 population of maize to determine the character to be selected. This study aimed to estimate the narrow-senseheritability and the expected selection response of quantitative characters in the F2 population. The experimental method used in this study was field experiments on dry land using pumping wells for irrigation. This was conducted from April to October 2022 in Amor-Amor Hamlet, Gumantar village, North Lombok district. The experiment was carried out in two growing seasons; namely: the first growing season was to establish kinship with NC1 and the second season was to test the results of crosses by used a Randomized Block Design (RBD). The number of treatments was 105; derived from 35 male parents. Each treatment was replicated 2 times, so there were 210 experimental units. Data were analyzed using analysis of variance (ANOVA); and then calculation of narrow sense heritability and response selection expectations was conducted. The results showed that the narrow sense heritability of all the quantitative characters observed was low, while the selection response of the biomass weight per plant was high; Plant height, leaf angle, and dry cob weight per plant were moderate and other characters were low. Fresh biomass weight per plant can be used as a selection criterion for improving the stay-green character. Yield can be improved through enhancing dry cob weight per plant. Keywords: corn; heritability; response of expected selection and dry land.
Tolerance Level of S4 Corn Lines to Drought Stress in Dry Land I Wayan Sudika; I Wayan Sutresna; Dwi Ratna Anugrahwati; I Gusti Putu Muliarta Aryana
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.v10i12.9488

Abstract

Selfing is the initial step to form hybrid varieties. Selfing has been carried out for four generations and 29 S4 lines have been obtained. All lines have been tested for their tolerance level to drought stress in dry land. The purpose of the study was to determine the tolerance level of S4 lines of corn plants to drought stress in dry land. Experimental methods with field trials were used for the test. And the correlation between characters and ISC values. The design used was a randomized block design at each stress level. Determination of the tolerance level used the observation parameter of the results (dry seed weight per plant) under mild stress conditions and normal conditions. The tolerance level to drought stress was measured from the Stress Sensitivity Index (ISC) value. The results showed that three S4 lines were tolerant to drought stress, namely lines S4.7, S4.15 and S4.24. Nine S4 lines have moderately tolerant category, namely lines S4.1, S4.3, S4.8, S4.12, S4.13, S4.14, S4.21, S4.26 and S4.29; the rest are classified as sensitive. The yield have a high negative correlation with the ISC value; the weight of dry cobs harvested per plant has a moderate negative correlation. The three tolerant lines can be used for the formation of S5 lines.
Co-Authors A Farid Hemon Dwi Ratna Anugrahwati Fasia Juliati I Gusti Putu Muliarta Aryana I Wayan Sudika Rica Lifiani