早籼788的选育及其栽培技术研究

目的]介绍早籼788的选育与栽培技术。方法]早籼788由安徽省农业科学院水稻研究所以优质早稻品种早籼14为轮回亲本,Gayabyeo为非轮回亲本,通过1次杂交和2次回交,经系谱法选育而成。描述了该品种的产量表现、特征特性和栽培要点。结果]早籼7882005～2006年连续2年参加安徽省早稻区域试验,平均产量7216.50kg/hm2,较对照竹青平均增产6.40%;2007年参加安徽省早籼生产试验,平均产量6595.10kg/hm2,较对照竹青增产3.54%。该品种全生育期105d,株型较紧凑,茎秆较粗壮,中抗白叶枯病和稻瘟病,苗期耐寒能力较强;米质较好,综合指标达4级食用稻品质标准;适宜播期为3月下旬～4月上旬,适宜在安徽省沿江、江南和江淮之间作双季早稻种植。结论]早籼788是1个中熟、高产、稳产、抗病能力强的早籼稻新品种。

Study on Breeding and Cultivation Technique of an Early Indica Rice Variety Zaoxian 788

Objective]The study aimed to introduce the breeding and cultivation technique of an early indica rice variety Zaoxian 788.Method]Zaoxian 788 was bred by Rice Institute,Anhui Academy of Agricultural Sciences by using the pedigree method through the cross for 1 time and backcross for 2 times with the good early rice variety Zaoxian 14 as the recurrent parent and the Gayabyeo as the non-recurrent parent.The yield performance,variety characteristic and main cultivation technique of the variety were described.Result]In continuous 2-year participation of early indica rice variety area trial from 20052006 in Anhui Province,Zaoxian 788 had the average yield of 7 216.50 kg/hm2,being 6.40 % higher than CK variety Zhuqing;in the participation of early indica rice production trial in 2007,Zaoxian 788 had the average yield of 6 595.10 kg/hm2,being 3.54 % higher than CK variety Zhuqing.The variety had whole growing period of 105 d and was characterized by the compact plant type,stronger stem,moderate resistance to rice blast and bacteria leaf blight and stronger tolerance to low temperature at seedling stage.Its grain quality was better,with the comprehensive indicator meeting the 4th grade of rice quality standard issued by Ministry of Agricultural of China.Its suitable sowing stage was in late March and early April and it was suitable to be planted in the areas between Yanjiang,Jiangnan and jianhhuai in Anhui Province as the double-season early rice.Conclusion]Zaoxian 788 was a new variety of medium maturity,early indica rice with high yield,stable yield,strong resistance to disease.