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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
D. S. Brar
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Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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lntrogression of Bacterial Leaf Blight Resistance Gene from Oryza Minuta J.B. Presl. Ex C. B. Presl. into New Rice Type (Oryza sativa L.) Abdullah, Buang; Brar, D. S.; Carpena, A. L.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 29 No. 2 (2001): Buletin Agronomi
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 (1791.588 KB) | DOI: 10.24831/jai.v29i2.1547

Abstract

F1 Hybrids, backcross progenies, advanced introgression lines (2n=24) and monosomic alien addition lines or MAALs (2n=25) were successfully produced following embryo rescue between an elite new plant type (NPT) breeding line of Oryza sativa (2n=24, AA) and a wild species, O. minuta (2n=48, BBCC). F1 hybrids performance were intermediate between the parents. The F1 hybrids had 36 chromosomes indicating having 12 chromosome A from O. sativa and 12 B and 12 C from O. minuta. THE BACK CROSS progenies had different chromosome number indicating abnormal meiosis of the hybrids and back cross progenies. Plant with 2n=24 and 25 chromosomes were obtained in BC4FI. The hybrids and backcross progenies were susceptible to bacterial leaf blight (BB). However, several of the 2n=24 plants derived resistant plant to bacterial leaf blight race 1 of the Philippines races. The gene is different from introgressed gene intio rice from O. longistaminata ( Xa21) and from O. Minuta Acc. 101141   I Key words: Oryza minuta, MAALS, Bacterial leaf blight
Co-Authors A. L. Carpena Buang Abdullah