| In order to investigate the effects of the semi-arid conditions on rice quality, an F6-generation rice recombinant inbred population (referred to as RILs population) containing of 224 lines derived from crosses between Z601 and C14 was selected as experimental materials. Under the conditions of water-saving irrigation, the correlation between appearance quality traits and associated quantitative trait loci (QTL) was analyzed. The result showed that the percentage of grains with chalkiness was significantly positively correlated with area of milled rice (r=0.236) and endosperm transparency(r=0.659). Endosperm transparency was extremely significantly negatively correlated with ratio of milled rice length-width(r=-0.481), and length of milled rice(r=-0.166) was significantly positively correlated with width of milled rice(r=0.283). Degree of milled rice embryos was extremely significantly negatively correlated with degree of endosperm chalkiness (r=-0.269). A total of 34 QTLs controlling milling quality traits in rice were detected, including three QTL controlling length of milled rice, eight QTL controlling width of milled rice, three QTL controlling area of milled rice, six QTL controlling ratio of milled rice length-width, three QTL controlling percentage of grain with chalkiness, one QTL controlling degree of endosperm chalkiness, five QTL controlling endosperm transparency, and five QTL controlling degree of milled rice embryos, which were located on chromosome 3, 5, 6, 7, 8, 11 and 12, respectively. |