水稻单蘖突变体(st-1)的基因定位及育种改良研究

Improvement of rice plant-type is one of the key paths to increase rice quality and yield. The evolution trend of 'multi panicle---panicle weight --- single tiller' has been found by tracing the development of maize plant-type, so it is of importance for advanced identification and studying of rice single tiller germplasm resources. This study has used the latest rice single tiller mutant, investigated its physiological mechanism, completed the typical genetic analysis, mapping and cloning of gene for controlling single tiller. Using with integrating the transgenic technology, backcross and flower-culture methods, a large number of elite lines with good agronomic traits and high-yielding potential were gained.

追\踪同属禾本科且产量远高于水稻的玉米株型进化途径可以发现其由穗数型－穗重型－单胄脱荼洹＝晁居质导砻鳎核胫匦筒牧喜壳绷Ω哂谒胧推分郑虼顺胺⒕颉⒀芯克镜ニ氩牧暇咧卮笠庖澹狙芯磕舛灾泄舅⑾值乃镜マ镣槐涮褰谢蚨ㄎ唬牧计渚眯宰矗髌湫纬傻纳砘疲拘轮晷偷娜妨⒌於ɑ