Utilization of Stiff Culm Trait of Rice smos1 Mutant for Increased Lodging Resistance

摘要: Although the introduction of semi-dwarf trait into rice has led to improved lodging resistance making it capable supporting high grain yield, still remains a concern when attempting further increase yield rice. However, improving in by depending on alone is possible only up certain limit, beyond which other traits may be needed for reinforcement. To search alternative relating resistance, we identified 9 mutant lines possessing culm strength. evaluate whether such can useful breeding resistant rice, small organ size1 (smos1) having increased but low tiller number and was chosen as representative trial. smos1 crossed with ST-4 (from Stock collection Nagoya University Togo field #4), cultivar from their progeny, LRC1 (lodging candidate-1) selected. not fully reversed LRC1, this compensated an weight per panicle, thereby resulting plant. This important attribute enhanced inherited smos1. Such revealed mainly due diameter thickness, section modulus (SM) value, parameter defining physical strength culm. Since possesses breaking-type different plants bending-type approach using thick creation hereby proposed.