Screening for a Novel Gene, OsPSLSq6, Using QTL Analysis for Lodging Resistance in Rice

Lodging is the most common factor that affects crop productivity, reducing yield, grain quality, and harvesting efficiency of rice other cereal crops. The Cheongcheong (Indica)/Nagdong (Japonica) doubled haploid (CNDH) genetic map was used to develop a lodging-resistant variety. major agricultural traits related lodging resistance, such as pushing strength lower stem before heading date (PSLSB) at reproductive growth period after (PSLSA) full ripe were investigated. A quantitative trait locus (QTL) analysis PSLSA PSLSB detected on RM439-RM20318 chromosome 6 has overlap in three consecutive years. contained 15 resistance candidate genes. Among genes, Os06g0623200, named OsPSLSq6, which similar Cinnamoyl-CoA reductase, involved lignin biosynthesis defense responses. Lignin main structural component vascular plants’ secondary cell wall, not only plant development but also mechanical strength. OsPSLSq6 opens new possibilities control synthesis improve resistance. can be target gene for further studies provide important information marker-assisted improvement cloning genes underlying QTL interest.