【摘要】 对32份美国稻品种和12份国内水稻骨干亲本材料的农艺性状与品质性状的钝感值进行了评价,从中选择表现最为钝感的14份优质品种与国内5份相对较钝感的材料,进行了品质性状的对比分析。结果表明:美国水稻品种在垩白率、糙米率、精米率上表现钝感,垩白率尤其钝感,筛选出C94-303、Lemont等几个对温度表现钝感的品种,可作为重庆等高温伏旱区选育优良“三系”杂交稻亲本加以利用。更多还原

【Abstract】 The IV (insensitivity value) of characters of agronomy and quality in between 32 American and 12 Chinese key rice breeds have been evaluated, and the quality characters in between the most insensitive 14 American and 5 Chinese rice breeds have been contrasted. The results showed that the American rice breeds are insensitive in the rate of chalk, brown rice and head rice, especially in chalk rate. Also we selected several breeds, which are the most insensitive against temperature such as C94-403, Lemont etc. The utilization of those varieties is discussed in hybrid rice breeding in Chongqing.更多还原