香型优质常规稻品种‘广粮香2号’的选育与应用

A Conventional Rice Variety‘Guangliangxiang 2’with Fragrance and High Quality:Breeding and Utilization

为选育出适合广西稻作区的早晚兼用香型优质常规籼稻品种,提高广西香米市场品牌竞争力。以传统香稻品种‘田东香’和‘早香1号’为母本和父本,杂交后以系谱法选育,并通过广西常规优质稻组区域试验和农艺性状、产量、抗性、米质鉴定,育成浓香型高档优质常规稻品种‘广粮香2号’。2019年通过广西品种审定,‘广粮香2号’生育期适中、农艺性状优良;产量较高,两年区试平均产量为6912.0 kg/hm2,比对照增产11.81%;早、晚稻米质均达部标优质二等,香味值83分;适应性广,可在桂南、桂中和桂北稻作区作早、晚稻种植,并已获广东、江西、湖南同一适宜生态区引种备案;是2020年唯一入选广西农业农村厅首批确认的7个水稻绿色品种的常规稻品种,是“广西香米”公共品牌建设主用品种,深受各地种植户、米商青睐。‘广粮香2号’兼具产量高、米质优、香味浓、适应性广等特点,适合在广西及长江中下游稻作区推广种植。

The aims are to breed conventional indica rice variety with fragrance and high quality and of both early and late maturing characteristics in Guangxi rice cropping area,thus improving the brand competitiveness of Guangxi fragrant rice.The fragrant rice varieties‘Tiandongxiang’and‘Zaoxiang 1’were used as female parent and male parent respectively,and the breeding was conducted by genealogy after hybridization.‘Guangliangxiang 2’,a high-grade and high-quality conventional rice variety of fragrant type,was bred through regional trials of conventional high-quality rice in Guangxi,and by identifying agronomic characters,yield,resistance and quality.‘Guangliangxiang 2’was approved by Guangxi Crop Variety Appraisal Committee in 2019.It has moderate growth period and good agronomic characters.The average yield of the variety in the Rice Regional Trail is 6912.0 kg/hm2,11.81%higher yield than that of the control.The rice quality is up to the second-class of the standards set by the Ministry of Agriculture and Rural Affairs for early and late rice,with a fragrance value of 83.This variety has wide adaptability and could be grown as early and late rice in the rice cropping areas of the south,central and north of Guangxi.It has also been introduced and put on records in same ecological zones in Guangdong,Jiangxi and Hunan.The variety is the only conventional rice variety selected by the Guangxi Department of Agriculture and Rural Affairs as the first batch of seven green rice varieties in 2020,and it is the main variety for the public brand construction of“Guangxi Fragrant Rice”,which is favored by growers and rice merchants.‘Guangliangxiang 2’has the characteristics of high yield,high quality,fragrance and wide adaptability,and is suitable for promotion in Guangxi and the middle and lower reaches of the Yangtze River.