【摘要】 为满足市场对弱感光杂交水稻组合的需求,广西农业科学院水稻研究所利用自育软米型不育系龙丰A与自选育强优势恢复系桂169配组,育成了高产优质弱感光籼型杂交水稻新组合龙丰优169,该组合于2018年6月通过广西农作物品种审定委员会审定(桂审稻2018022)。龙丰优169在2016年、2017年广西桂南稻作区感光组区域试验中,平均产量分别为8.08t/hm~2和7.12t/hm~2,比对照品种丰田优553分别增产0.37%(不显著)和减产0.51%(不显著),2年试验平均产量7.60t/hm~2,比对照品种丰田优553减产0.07%,增产点比例70%;在2017年广西桂南稻作区感光组生产试验中平均产量7.74t/hm~2,比对照品种丰田优553增产0.35%,增产点比例100%。龙丰优169产量高,熟期适中,抗性和稻米品质较好,米质达NY/T 593-2013《食用稻品种品质标准》优质3等标准,可在桂南稻作区作晚稻种植。更多还原

【Abstract】 In order to meet the market demand for weakly photosensitive hybrid rice combinations,Longfengyou 169 was derived from Longfeng A and Gui169 which is a new combination of fine-quality and high-yield weakly photosensitive indica hybrid rice developed by Rice Research Institute of Guangxi Academy of Agricultural Sciences.In June 2018,it was approved by Guangxi Crop Variety Approval Committee(Guishendao 2018022).In 2016 and 2017,the average yield of this combination was 8.08 t/hm~2 and 7.12 t/hm~2 respectively in the regional experiments of photosensitive group in rice growing area of southern Guangxi,which increased by 0.37%(insignificantly)and decreased by 0.51%(insignificantly)compared with the control variety Fengtianyou 553.The average yield of the two-year trial was 7.60 t/hm~2,which was 0.07%lower than the control variety Fengtianyou 553,and the percentage of production increased sites was 70%.In 2017,the average yield of Longfengyou 169 was 7.74 t/hm~2,0.35% higher than the control variety Fengtianyou 553 in the productive trial,the percentage of production increased sites was 100%.Longfengyou 169 has moderate ripening stage,high yield,moderate maturity,good resistance and rice quality,and the rice quality reaches level 3 of Standard for Quality of Edible Rice Varieties.Longfengyou 169 is suitable for planting as late rice in south Guangxi.更多还原