Announcement
Starting on July 4, 2018 the Indonesian Publication Index (IPI) has been acquired by the Ministry of Research Technology and Higher Education (RISTEKDIKTI) called GARUDA Garba Rujukan Digital (http://garuda.ristekdikti.go.id)
For further information email to portalgaruda@gmail.com

Thank you
Logo IPI  
Journal > HAYATI Journal of Biosciences > Inheritance of Blast Resistance (Pyricularia grisea Sacc.) on Interspecific Crossing between IR64 and Oryza rufipogon Griff

 

Full Text PDF (48 kb)
HAYATI Journal of Biosciences
Vol 13, No 3 (2006): September 2006
Inheritance of Blast Resistance (Pyricularia grisea Sacc.) on Interspecific Crossing between IR64 and Oryza rufipogon Griff
Article Info   ABSTRACT
Published date:
02 Dec 2009
 
Blast disease affected by Pyricularia grisea causes high percentage of yield losses in rice production. The improvement of durable Blast resistance is difficult due to the complexity of the inheritance of this trait. This study was conducted to evaluate the genetic control and inheritance of Blast resistance trait in interspesific population between IR 64 (accepted Indonesian rice type, medium resistant to Indonesian Blast pathogen) and Oryza rufipogon (AA genome; acc. No.IRGC#105491; donor for Blast resistance). Six populations, i.e. P1, P2, F1, F2, BCP1, and BCP2, were inoculated with three Indonesian races of Blast pathogen. The disease intensity was determined on the basis of disease leaf area (DLA). The three types of gene interactions (additive, dominance, and epistatis) were significantly involved in this trait. Among the digenic epistasis interactions, all of the additive x additive [i], additive x dominance (j) and dominance x dominance (l) contributed to the trait. Broad-sense heritability ranged from 50.30 up to 91.20%, while the narrow heritability ranged from 16.98 up to 73.20%. The presence of additive gene effect indicated that selection of this trait is promising. Key words: inheritance, Blast resistance, wild rice, Oryza rufipogon
Copyrights © 2009