两系晚粳杂交稻华粳杂2号选育及其利用特性研究  

Breeding and the Main Characteristics of Two-line Japonica Hybrid Rice Huajingza 2

作　　者：杨书化[1] 万经猛[1] 李泽炳[1] 靳德明[1] 田亚雯[1] 

机构地区：[1]华中农业大学植物科学技术学院,武汉430070

出　　处：《华中农业大学学报》2003年第4期317-320,共4页Journal of Huazhong Agricultural University

基　　金：湖北省九五科技攻关项目资助 ( 96190 60 1)

摘　　要：华粳杂 2号 (5 0 88S/416 78)是在多年精心选育研究的基础上育成的两系晚粳杂交稻。 2 0 0 1年通过湖北省农作物品种审定委员会审定。该组合的的主要特点是 :生育期短 ,熟期较早 ,作二季晚稻种植 ,比同期播种和同等栽培条件下的对照品种鄂粳杂 1号早熟 4～ 5d ,在秋季低温条件下稳产性更好 ,在多熟种植制中也具有更大的应用价值 ;米质较优 ,其整精米率 6 2 .11% (6 1.0 6 %～ 6 7.36 % ) ,直链淀粉含量 18.94 % (17.2 8%～2 0 .6 0 % ) ,胶稠度 5 2mm ,蛋白质含量 9.80 % (8.80 %～ 12 .16 % ) ,垩白米率比对照低 16～ 2 9个百分点 ;单产6 .12～ 7.72t/hm2 ,比生产上种植的常规粳稻品种具有更大的产量优势 ,与同类杂交稻品种日产量相当。该品种的主要问题是对稻瘟病的抗性较差 ,生产上要注意防治穗颈稻瘟。Huajingza 2 (5088S/41678) is a new bred two-line japonica hybrid rice,certified and released to commercial production in Hubei Province in March,2001.The main characteristics of this hybrid rice are as follows:(1)It has a short growth and development period and early maturity.Compared with Ejingza 1(Control),it matures 4～5 days earlier when they were planted at late crop season of rice with same sowing date and similar cultivation condition.(2)The yield stability of Huajingza 2 was better than that of Ejingza 1 when they were planted in the early autumn with low temperature,which indicated a more practical value in the multiple cropping system.(3)Huajingza 2 has a relatively fine grain quality with mean head rice of 62.11% ( 61.06 %～67.36% ),amylose content of 18.94%(17.28%～ 20.60%),gel consistancy of 52 mm and protein content of 9.80%(8.80%～12.16%).The value of chalky rice was 16%～29% lower than that of Ejingza 1.(4)The yield of Huajingza 2 was 6.12～7.72 t/hm2,higher than those of conventional japonica varietes and similar to those of japonica hybrid rices.But Huajingza 2 is highly susceptible to the rice blast.Therefore,much attention should be paid to the prevention and controlling of the neckblast in its cultivation management.

关 键 词：两系晚粳杂交稻 “华粳杂2号” 选育 特征特性 生育期 熟期 同期播种 栽培条件 

分 类 号：S511.22[农业科学—作物学]