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All Journal BERITA BIOLOGI JURNAL BIOLOGI INDONESIA ANNALES BOGORIENSES Bioma : Jurnal Biologi Indonesia Makara Journal of Science Annales Bogorienses
Kurniawan Rudi Trijatmiko, Kurniawan Rudi
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian, Jl. Tentara Pelajar 3A, Bogor 16111 Telp. (0251) 8337975
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Immunology & microbiology Medicine & Pharmacology

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Journal : Makara Journal of Science

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Identification of Quantitative Trait Loci (QTL) for Awn, Incomplete Panicle Exertion and Total Spikelet Number in an F2 Population Derived from A Backcross Inbred Line, Bio-148, and the Recurrent Parent, IR64 Herlina, Lina; Sobir,; Trijatmiko, Kurniawan Rudi
Makara Journal of Science Vol. 20, No. 1
Publisher : UI Scholars Hub

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Abstract

An F2 rice population developed from a cross between a backcross inbred line (BIO-148) and its recurrent parent (IR64) was used to identify quantitative trait loci (QTL) for awn, panicle exertion and total spikelet number. BIO-148 is a BC2F8 line derived from a cross between IR64 (a high-yielding lowland rice variety) and Gajah Mungkur (an upland tropical japonica rice variety). Two hundred plants were grown in the greenhouse, and their DNAs were isolated for genotyping using SSR markers. Panicle exertion was observed during the grain-filling stage. The awn length of the seed and the total spikelet number per panicle were observed after harvesting. A total of four QTLs were identified using single-marker regression with LOD>3, explaining 8.4-18.1% of phenotypic variation. A QTL for awn was identified on Chromosome 8. A QTL for incomplete panicle exertion was identified on Chromosome 4. Two QTLs for total spikelet number were identified on Chromosome 4, in which the BIO-148 allele contributed to a higher number of spikelets per panicle. The QTLs identified in this study will be useful in the improvement of yield potential for modern lowland indica rice varieties by harnessing the hidden useful alleles from upland tropical japonica rice varieties.
Identification of A Major Quantitative Trait Locus for Grain Weight In Rice Using Microsatellite Marker Susilowati, Mariana; Aswidinnoor, Hajrial; Enggarini, Wening; Trijatmiko, Kurniawan Rudi
Makara Journal of Science Vol. 21, No. 4
Publisher : UI Scholars Hub

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Rice is one of the major staple foods in the world, especially in Asia. Improving yield potential of superior cultivars is important to meeting the demand for rice production, which is increasing due to human population increase, climate change, and degradation of agricultural resources, such as land and water. In this study, a BC3F2 population developed from an intraspecific cross between Ciherang and a new plant type line (B11143D) was used in a quantitative trait locus (QTL) analysis. Ciherang is a high yielding rice cultivar with good grain quality which has been planted in 37% of the irrigated rice area in Indonesia. The objective of this study was to identify QTL(s) for yield components on chromosome 12, which can be used to improve the elite cultivar Ciherang or other popular cultivars through marker-assisted breeding. A total of two hundred BC3F2 lines were evaluated in the greenhouse during this study. The population was observed for eight agronomic traits including days to heading (dth), plant height (ph), flag leaf length (fll), panicles per plant (ppl), panicle length (pl), grains per panicle (gpp), 1000-grain weight (gw), and yield (yld). Four simple sequence repeats (SSR) markers (RM3472, RM28048, RM28195, and RM1986) were used for targeted mapping on chromosome 12. Linkage analysis identified a QTL for 1000-grain weight located on chromosome 12 at position 53.5 cM–73 cM.
Co-Authors Adisyahputra Adisyahputra, Adisyahputra Aniversari Apriana Anky Zannati Apriadi Situmorang Atmitri Sisharmini Dwi Astuti Dwi Widyajayantie Enngarini, Wening Enngarini, Wening Enung Sri Mulyaningsih fatimah Fatimah HAJRIAL ASWIDINNOOR Joko Prasetiyono Lina Herlina Mariana Susilowati, Mariana Pantouw, Carla F. Pantouw, Carla Frieda Polosoro, Aqwin Rachmawati, Syamsidah Satya Nugroho Sobir, Sri Indrayani, Sri Sustiprijatno Sustiprijatno, Sustiprijatno Syamsidah Rahmawati, Syamsidah TRI JOKO SANTOSO Vincentia Esti Windiastri, Vincentia Esti Wening Enggarini Widyajayanti, Dwi Yohana, Kesia