优质籼型水稻光温敏核不育系‘7-163S’特征特性及其基因型解析  

Characteristics and Genotype Analysis of High-quality Indica Rice Photo-Thermo-Sensitive Genic Male Sterile Line‘7-163S’

作　　者：张彩娟 周坤能 夏加发[1] 王元垒[1] 云鹏 马廷臣 吴德祥[2] 李泽福[1] ZHANG Caijuan;ZHOU Kunneng;XIA Jiafa;WANG Yuanlei;YUN Peng;MA Tingchen;WU Dexiang;LI Zefu(Rice Research Institute/Key Laboratory of Rice Genetics and Breeding of Anhui Province,Anhui Academy of Agricultural Sciences,Hefei 230031;College of Agronomy,Anhui Agricultural University,Hefei 230036)

机构地区：[1]安徽省农业科学院水稻研究所/安徽省水稻遗传育种重点实验室,合肥230031 [2]安徽农业大学农学院,合肥230036

出　　处：《中国农学通报》2023年第11期1-9,共9页Chinese Agricultural Science Bulletin

基　　金：安徽省农作物良种联合攻关(水稻)“优质高产抗逆中籼稻新种质创制及品种选育”;安徽省重点研究与开发计划“水稻稻瘟病抗性基因资源的鉴定、创制与利用”(202004a06020027);安徽省科技重大专项“适于江淮地区水稻优异种质创制与分子设计育种”(2021d06050002),“适于江淮地区水稻优异种质创制与分子设计育种”(202003a06020005),“优质高产耐热氮高效水稻新品种选育与应用”(202103a06020008);国家水稻产业技术体系(CARS-01-73)。

摘　　要：为了制定合理的育种计划,对籼型水稻光温敏核不育系‘7-163S’特征特性及基因型进行解析。以‘7-163S’及其配制组合或品种为试验材料,对主要农艺性状进行分析,使用基因组测序和RiceNavi数据库解析‘7-163S’的基因型。结果表明,‘7-163S’农艺性状优异,可繁性好,育性起点温度低、中抗稻瘟病、抗白叶枯病。已育成4个品种或组合,均表现出生育期适中、优质、丰产性好等特点。基因型分析表明‘7-163S’含有稻瘟病、白叶枯病、褐飞虱等抗性等位基因,以及低垩白、高氮肥利用效率、耐冷等优异等位基因。然而,其缺乏广谱抗稻瘟病基因Pi2、Pi9和Pigm、广谱抗白叶枯病基因Xa23、香味基因fgr及镉低积累基因OsCd1和OsNRAMP5等。将基因型与表型结合,可为基因聚合增强‘7-163S’抗性和新品种选育提供理论支撑。In order to develop a suitable breeding strategy,the characteristics and genotypes of the indica rice photo-thermo-sensitive genic male sterile(PTGMS)line‘7-163S’were analyzed.‘7-163S’and its combinations or varieties were used to investigate the key agronomic characteristics.The genotypes of‘7-163S’were also determined using genome sequencing and the RiceNavi database.The results show that‘7-163S’has excellent agronomic characteristics,good fecundity,low beginning temperature of fertility alteration,and medium resistance to rice blast and bacterial blight.Four hybrid combinations or varieties were bred,showing moderate growth periods,good quality and high yield.Genotype analysis reveals that‘7-163S’contains resistance alleles to rice blast,bacterial blight and brown planthopper,as well as excellent alleles of low chalkiness,high nitrogen utilization efficiency and cold tolerance.However,the broad-spectrum blast resistance genes Pi2,Pi9 and Pigm,broad-spectrum bacterial blight resistance gene Xa23,fragrance gene fgr,and cadmium low accumulation genes OsCd1 and OsNRAMP5 are absent in‘7-163S’.Combining genotypes with phenotypes can provide theoretical support for gene aggregation to enhance‘7-163S’resistance and breeding of new varieties.

关 键 词：水稻 籼型光温敏核不育系 ’7-163S’ 特征特性 基因型解析 

分 类 号：S511[农业科学—作物学]