Comparison in Quality Traits at Different Parts within a Rice Panicle

Using erect panicle type rice variety Liaojing 5,curved panicle type Toyonishiki and 4 RILs of Liaojing 5/Toyonishiki as materials,quality traits and its relationship with panicle type were studied within a rice panicle in field experiment.The results indicated that there were significant differences in brown rice percentage,milled rice percentage and head rice percentage between different panicle varieties in different grain parts,the lower milled rice percentage of the basal secondary grains resulted in the worse milling quality of erect panicle type cultivars than curved panicle types.The grain length and ratio of length to width of curved panicle type cultivars were higher than that of erect panicle types while there were little difference in other look quality.There was not obvious difference in the cooking and taste quality between different panicle type varieties,the protein content of grains wasn′t significant difference within a rice panicle,the amylase content of primary branches grains was lower than that of secondary branches grains.The taste score of middle primary branches grain was better than the upper and basal,but the secondary branches was the upperthe middlethe basal.