Knowledge Center Catalog

Marker assisted piramiding of bacterial blight resistance genes in parental lines of hybrid rice

By: Contributor(s): Material type: TextTextPublication details: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 168-169Subject(s): DDC classification:
  • 631.53 BOO
Summary: Hybrid rice technology is being used to increase rice production, farm incomes, and agricultural jobs in the Philippines. The government's banner program for agriculture is the Hybrid Rice Commercialization Program (HRCP). Most of the hybrid parental lines used by HRCP, however, are susceptible to the bacterial blight (BB) disease caused by Xanthomonas oryzae pv. oryzae (X.o.o), leading to lower yields in both hybrid seed and commercial production, particularly in the wet season. Breeding resistant parental lines, therefore, is a vital concern. The use of biotechnology tools to allow for faster breeding, as well as pyramiding of different blight resistance genes leading to more stable resistance, is deemed very necessary. This study reports on the marker assisted introgression of single and pyramids of two to three bacterial blight resistance genes in five maintainer lines, and the optimization of three new polymerase chain reaction (PCR) based markers linked with the Xa7 gene that facilitated selection for the gene.
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library CIMMYT Publications Collection 631.53 BOO (Browse shelf(Opens below)) 1 Available 2B632399
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Hybrid rice technology is being used to increase rice production, farm incomes, and agricultural jobs in the Philippines. The government's banner program for agriculture is the Hybrid Rice Commercialization Program (HRCP). Most of the hybrid parental lines used by HRCP, however, are susceptible to the bacterial blight (BB) disease caused by Xanthomonas oryzae pv. oryzae (X.o.o), leading to lower yields in both hybrid seed and commercial production, particularly in the wet season. Breeding resistant parental lines, therefore, is a vital concern. The use of biotechnology tools to allow for faster breeding, as well as pyramiding of different blight resistance genes leading to more stable resistance, is deemed very necessary. This study reports on the marker assisted introgression of single and pyramids of two to three bacterial blight resistance genes in five maintainer lines, and the optimization of three new polymerase chain reaction (PCR) based markers linked with the Xa7 gene that facilitated selection for the gene.

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection


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