Open AccessThe resistance of restorer lines and F1 hybrids to bacterial leaf blight disease
Author(s) -
Yuni Widyastuti,
Nita Kartina,
Bayu Pramono Wibowo,
Anggiani Nasution,
Satoto
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/724/1/012015
Subject(s) - xanthomonas oryzae , hybrid , blight , biology , plant disease resistance , resistance (ecology) , horticulture , agronomy , bacterial blight , xanthomonas oryzae pv. oryzae , bacteria , genetics , gene
Bacterial leaf blights (BLB) is one of a major problem in hybrid rice cultivation cause yield losses from 15 to 80%. The disease is caused by the bacterium of Xanthomonas oryzae pv. oryzae (Xoo). To overcome this problem, improvement of hybrid rice parental lines have been conducted since 2010 in the Indonesian Center for Rice Research. There were two activities conducted in the research i.e. evaluation of some improved parental lines resistance to BLB and evaluation of their F1 hybrid for yield and agronomic traits during the dry season of 2015 in a field station. Results showed that several Restorer lines were resistant to BLB. The restorer lines CRS850, CRS851, CRS882, 890, and CRS982 have been identified as resistant lines in early tillering and booting stages to both Xoo IV and VIII races. Those Restorer lines are the potential to use as parental lines to develop new hybrid varieties possessing resistance to BLB. The best F1 hybrids with resistance to BLB was GMJ7/CRS850 that showed resistance in early tillering and booting stages to both Xoo IV and VIII races. GMJ12/CRS890 hybrid showed the best performance and yielded higher than that of the check variety.