CAJ | 학술논문

在田间条件下，对不同杂交水稻品种生育期根系生理特性进行研究。结果表明，各水稻品种生育期内根系生理指标的变化趋势基本一致，但其含量具有明显差异，除根系活力外，其他生理指标的差异在抽穗期达到显著或极显著水平。各品种间，冈优725的根系活力、伤流强度、氨基酸含量及可溶性糖含量在生育期的大部分时间内高于其他水稻品种；Ⅱ优725根系中蛋白质含量和可溶性糖含量在抽穗期较高，而对照品种的各生理指标最低。相关分析表明，所有根系生理指标在大部分生育时期与产量呈正相关，表明通过改良根系生理特性来提高水稻产量是可行的。
재전간조건하，대불동잡교수도품충생육기근계생리특성진행연구。결과표명，각수도품충생육기내근계생리지표적변화추세기본일치，단기함량구유명현차이，제근계활력외，기타생리지표적차이재추수기체도현저혹겁현저수평。각품충간，강우725적근계활력、상류강도、안기산함량급가용성당함량재생육기적대부분시간내고우기타수도품충；Ⅱ우725근계중단백질함량화가용성당함량재추수기교고，이대조품충적각생리지표최저。상관분석표명，소유근계생리지표재대부분생육시기여산량정정상관，표명통과개량근계생리특성래제고수도산량시가행적。
The differences of root physiological characteristics within hybrid rice varieties were studied in the field ex -periment .It was shown that the change trend of root physiological indexes within rice variety was consistent , but the contents of most root physiological indexes varied significantly except the root activity during heading stage .Root ac-tivity, bleeding intensity , contents of amino acid and soluble sugar in rice cv .Gangyou725 were higher than those in other rice varieties in most of the growth period .The contents of protein and soluble sugar were higher in rice cv .Ⅱyou725 at the heading stage .All physiological indexes were the lowest in the control variety .Correlation analysis in-dicated that there was a positive correlation among all root physiological indexes and yield for most of the growth peri -od, which indicated the feasibility of increasing rice yield by improving root physiological properties .