Functional analysis of the lodging resistance QTL BSUC11 on morphological and chemical characteristics in upper culms of rice
作者： Takayuki Kashiwagi , Jun Munakata , Ken Ishimaru
DOI: 10.1007/S10681-016-1707-1
关键词: Thickening 、 Grain filling 、 Resistance (ecology) 、 Biology 、 Quantitative trait locus 、 Structural carbohydrate 、 Breaking strength 、 Agronomy 、 Key factors
摘要: Culm strength deterioration from grain filling to the fully ripe stage is one of main causes rice lodging. The quantitative trait locus for resistance bending-type lodging, BSUC11, prevents upper culms deteriorating their physical strength. determined by morphological traits and chemical components. To clarify key factors preventing after filling, this study conducted functional analyses on components using chromosomal segment substitution lines (CSSLs) containing BSUC11. Dry weights in CSSLs with BSUC11 were heavier than those ‘Koshihikari’ 4 6 weeks heading. For at stage, only showed a thickening cortical fiber tissues internode I, did not have greater diameter or wall thicknesses culms. Additionally, increased holocellulose content instead lignin, nonstructural carbohydrates, minerals compared ‘Koshihikari’. These results suggest that culm contributed rather culms, could improve lodging through prevention factor.
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