优质多抗高产高效北方粳稻新品种选育报告

在综合研究水稻优质、多抗、高产、高效的生理基础、生态条件和关键性状遗传特性的基础上,采用“多元杂交,混系结合,株型理想,优化选择”方法,选出了优质、多抗、高产、高效的理想稻新品种。其中沈农8718、沈稻7号通过国家审定熏沈稻4号、沈稻5号等通过辽宁省审定。新品种的产量超过对照品种。经检测熏7个品种的米质达到国家优质稻米一级或二级标准熏其余达到三级标准。新品种各性状组配合理熏抗病性、耐寒性、耐旱性较好。采用的优化育种方法熏实现了育种目标。

Breeding for Qualitative, Resistant, Efficient and High- yielding Rice Varieties in North China

Based upon studies on the physiological machnisium, ecological factors and some key traits of rice and with the method to create variation by multiple crossing among different types of rice, to combine mass selection with purity selection, to seek for ideal plant type and to determine optimum characteristics, new rice varieties with good quality, multiple resistance, economical efficiency and high yield have been released. Shennong 8718 and Shendao 7 passed the national variety examination and were named accordingly by the National Crop Variety Examination Committee and others passed the examination in Liaoning Province of China. The average yields of the new varieties were higher than those of the CK varieties. Qualities of seven new varieties reached the first-grade, or second-grade, of the national standard for high quality rice in China and another come to the third-grade. The morphological traits and physiological characteristics of these varieties are coordinative. And the varieties are resistant to diseases, insufficient water and low temperature. With the breeding method, the target for selecting ideal type of rice has been completed.