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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Penelitian dan Pengembangan Pertanian
Yuniati Pieter Munarso
Instalasi Penelitian Padi, Balai Besar Penelitian Tanaman Padi Jln. Raya Ciapus No 25, Bogor, Jawa Barat.16119 Telepon/Faksimile: (0251)-8350713-8322064
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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PERKEMBANGAN PENELITIAN PEMBENTUKAN GALUR MANDUL JANTAN PADA PERAKITAN PADI HIBRIDA Munarso, Yuniati Pieter
Jurnal Penelitian dan Pengembangan Pertanian Vol 31, No 4 (2012): Desember 2012
Publisher : Pusat Perpustakaan dan Penyebaran Teknologi Pertanian

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Abstract

Perakitan padi hibrida merupakan salah satu alternatif dalampenyediaan varietas unggul baru padi. Pembentukan hibrida padapadi melibatkan galur mandul jantan (GMJ atau galur A), galurpelestari atau galur B, dan galur pemulih kesuburan atau galur R.Pengembangan padi hibrida di Indonesia pada awalnya menggunakanGMJ yang diintroduksi dari China dan IRRI. Meskipunmemperoleh beberapa GMJ dengan kemandulan tepung sari yangtinggi (highly sterile), GMJ tersebut masih memiliki kelemahan,antara lain tingkat persilangan alaminya sangat rendah, dayagabungnya kurang baik, serta potensi heterosisnya belum cukuptinggi (< 15%). Penelitian lebih lanjut memperoleh sejumlah GMJdengan sifat kemandulan tepung sari yang lebih mantap dan stabil,serta memiliki beberapa kelebihan, antara tingkat persilangan yanglebih baik serta lebih tahan terhadap hama penyakit utama. Upayaperbaikan galur pelestari juga dilakukan untuk memperbaiki GMJ.Pemanfaatan teknik inkonvensional melalui kultur antera masihdalam tahap awal program pemuliaan padi.
Penampilan Fenotipik dan Tingkat Kemandulan Tepungsari Calon Galur Mandul Jantan Tipe Wild Abortive Rumanti, Indrastuti Apri; Satoto, ,; Munarso, Yuniati Pieter
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 3 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (45.816 KB) | DOI: 10.24831/jai.v35i3.1325

Abstract

Wild Abortive (WA) type of cytoplasmic male sterility (CMS) was developed by Indonesian Center of Rice Research, Sukamandi through backcross method. Pollen sterility and phenotypic acceptability evaluation of cytoplasmic male sterile (CMS) candidates were considered important in CMS development process. Both of evaluation were done during dry season 2002 and wet season 2002/2003. The materials were 18 CMS candidates and their resembled maintainers. Each line planting on two rows (2.5 m each) with 20 x 20 cm spacing. Observations were done for 50% flowering time, pollen sterility and phenotypic acceptability. The results of observations showed that : (a) the variation of pollen sterility among 18 CMS candidates were 82.5 - 100%; (b) Nine CMS candidates were consistent in sterility (100%) and good in phenotypic acceptability during the two seasons. Those lines were derived from IR62829A/BP1082, IR68897A/S3613F, IR66707A/Barumun, IR58025A/S24731, IR62829A/BP68C, IR68886A/IR71605, IR66707A/A2790, IR69622A/IRBB5 and IR68886A/T12357. The male parent as donor were elite lines with some good characters such as good eating quality, resistant to Rice Tungro Virus (RTV) and Bacterial Leaf Blight (BLB).   Key words : Rice, cytoplasmic male sterile, pollen sterility, phenotypic acceptability
Co-Authors , Satoto Indrastuti Apri Rumanti