中科发早粳1号分子设计育种  

Breeding of ZhongKeFaZaoGeng1 by molecular design

作　　者：陈明江 刘贵富[1] 肖叶青[2] 余泓[1] 李家洋[1,3] Mingjiang Chen;Guifu Liu;Yeqing Xiao;Hong Yu;Jiayang Li(State Key Laboratory of Plant Genomics,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Beijing 100101,China;Rice Research Institute of Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China;Yazhouwan National Laboratory,Sanya 572024,China)

机构地区：[1]中国科学院遗传与发育生物学研究所,植物基因组学国家重点实验室,北京100101 [2]江西省农业科学院水稻研究所,南昌330200 [3]崖州湾国家实验室,三亚572024

出　　处：《遗传》2023年第9期829-834,共6页Hereditas（Beijing)

基　　金：中国科学院A类战略性先导科技专项“种子精准设计与创造”(编号:XDA24030101,XDA240305048);国家自然科学基金项目(编号:31900168);科技创新2030-重大项目资助。

摘　　要：双季早稻生产是粮食产业的重要组成部分。近期,双季早粳稻品种培育取得了重要进展,育成了兼具高产、优质、高抗的中科发早粳1号等双季早粳稻新品种/系。中科发早粳1号是利用分子设计育种体系,针对双季早稻生产中长期难以解决的经济效益低、稻米品质差、早期耐寒差和易穗萌等问题,选取含有不同优异基因的空育131、南方长粒粳与吉粳88为亲本,通过关键基因筛选聚合培育而成。中科发早粳1号株型紧凑,株高90厘米,每穗粒数120粒,结实率85%,千粒重26克,每公顷产量8.25吨,主要米质指标达到部颁粳稻品种品质等级二级及以上。中科发早粳1号的成功培育将为双季早稻产业发展提供新的思路与动力。Double-cropping early-season rice is one important part of staple crop rice.In recent years,great progress has been made in breeding the double-cropping early-season japonica rice variety,ZhongKeFaZaoGeng1(ZKFZG1),with high yield,good quality,and high resistance.The breeding of ZKFZG1 aimed at the severe problems of low quality,low income and pre-harvest sprouting in double-cropping early-season rice production,and was achieved through molecular design by selecting three parents with different beneficial genes,KongYu131,NanFangChangLiGeng,and JiGeng88 and screening for key agronomic genes in cross-breeding.ZKFZG1 has a compact plant architecture,a plant height of ~90 cm,a number of ~120 grains per panicle,a setting rate of ~85%,a 1000-grain weight of 26 grams,a yield of 8.25 t/ha,and especially good grain quality.The successful breeding of ZKFZG1 provides a new direction for double-cropping early-season rice production.

关 键 词：水稻 双季早稻 双季早籼稻 双季早粳稻 分子设计育种 

分 类 号：S511.22[农业科学—作物学]