江苏沿海地区不同类型杂交稻组合品质特性及食味值与各品质性状间关联度分析

Grain Quality Characteristics and Analyses of Correlation Degrees Between Quality Traits and Taste Values of Different Types of Hybrid Rice Combinations in Jiangsu Coastal Area

为探究江苏沿海地区不同类型杂交稻品质特性以及食味值与各理化性状间的关联度,以12个三系杂交稻及14个两系杂交稻组合为材料,对其食味值及其与各品质性状之间的关系进行探究。结果表明,三系杂交稻与两系杂交稻的食味平均值分别为74.04、72.97分,直链淀粉质量分数分别为15.31%、17.13%,三系杂交稻比两系杂交稻食味值高1.47%,而直链淀粉质量分数则低1.82百分点;三系杂交稻与两系杂交稻的蛋白质质量分数、长/宽均值、垩白粒率均相近,其中蛋白质质量分数分别为8.75%、8.77%,长/宽均值分别为2.71、2.67,垩白粒率分别为17.67%、17.71%;不同类型食味值与品质关联性中,三系杂交稻的蛋白质质量分数与食味值呈显著负相关;两系杂交稻的宽均值与食味值呈显著正相关。

The present study was conducted to investigate the grain quality characteristics of different types of hybrid rice from Jiangsu coastal area and correlation degrees between their taste values and physical and chemical properties.Using 12 three-line hybrid rice varieties and 14 two-line hybrid rice varieties as materials,we clarified the relationship between their taste values and other grain quality traits.The results showed that the three-and two-line hybrid rice had the average taste values of 74.04 and 72.97 points,respectively,and the amylose contents of 15.31%and 17.13%,respectively.Grains of the three-line hybrid rice had a 1.47%higher taste value,but a 10.62%lower amylose content than those of the two-line hybrid rice.On the other hand,grains of the three-and two-line hybrid rice had similarities in protein contents(8.75%and 8.77%,respectively),mean ratios of length to width(2.71 and 2.67,respectively),and chalky grain percentages(17.67%and 17.71%,respectively).In terms of the correlations between the taste values and quality traits of different types of hybrid rice,both protein and amylose contents had a significant negative correlation with taste value i n the three-line hybrid rice,while in the two-line hybrid rice,mean width of grain had a significant positive correlation with taste value.