Resistance Evaluation of Some Chinese Leading Rice Maintainer, Restorer lines and Their Hybrids to Magnaporthe grisea |
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| Authors: | ZHU Xu-dong SHEN Ying Henri ADREIT Julien FROUIN Didier HARREAU |
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| Institution: | State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China;Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, UMR BGPL TA73-09, 34398 Montpellier, Cedex 05, France State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China;Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, UMR BGPL TA73-09, 34398 Montpellier, Cedex 05, France Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, UMR BGPL TA73-09, 34398 Montpellier, Cedex 05, France Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, UMR BGPL TA73-09, 34398 Montpellier, Cedex 05, France Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, UMR BGPL TA73-09, 34398 Montpellier, Cedex 05, France |
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| Abstract: | Six isolates of Magnaporthe grisea were selected to inoculate on 10 Chinese leading maintainer lines (B-lines), 14 restorer lines (R-lines) and their F1 hybrid plants. In the tested rice materials, R-lines were proved to be more resistant to blast than B-lines.The resistance frequency of about 25% F1 hybrid plants was less than their parents. In addition, 26 isolates of M. grisea collected from different rice growing areas of China were inoculated on 13 new improved hybrid rice combinations. The resistance frequencies of 5 improved hybrids were better than those of the controls and leading varieties in rice production of China. |
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| Keywords: | hybrid rice maintainer line restorer line Magnaporthe grisea blast resistance |
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