共查询到19条相似文献，搜索用时 686 毫秒
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水稻恢复系蜀恢362的选育及利用 总被引：1，自引：0，他引：1
蜀恢３６２ 是四川农业大学水稻研究所用优质恢复系辐３６－２ 作母本,优良恢复系明恢６３ 作父本杂交选育而成的籼型优质恢复系。该恢复系株型好、穗大、配合力好、米质优,与不育系Ｄ汕Ａ 配组育成的Ｄ优３６２ 于１９９８ 年通过四川省品种审定委员会审定。 相似文献
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理想株型优质水稻恢复系华恢451的选育及应用 总被引：2，自引：0，他引：2
华恢451是湖南亚华种业科学研究院用"明恢63/Lemont"的F_5代株系作母本与先恢207杂交选育而成的水稻新恢复系.该恢复系株叶型理想,株型紧凑,剑叶直立,呈凹形,分蘖力中等,穗大粒多,颖尖无色,恢复力强,配合力好,品质优良,中感稻瘟病,抗高温能力强,耐寒性好.所配组合产量高,米质优,其中华优451、K优451、亚华优451、H28优451先后通过了省或国家品种审定;H28优451被评为湖南省2等优质米品种,三香优451和Q优451被评为湖南省3等优质米品种,K优451、亚华优451区试中米质均达到国标3级优质稻谷标准,应用前景广阔. 相似文献
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籼型恢复系绵恢2040的选育与应用 总被引：1，自引：0，他引：1
绵恢2040系西南科技大学水稻研究所用万恢228与多系I号杂交选育而成的具有粳稻亲缘的籼型恢复系，农艺、遗传性状稳定，具有恢复力和配合力强，较抗稻瘟病、品质较好、制种花粉量大、易获高产等特点；播抽期较明恢63短5d左右，温光反应特性与明恢63相似。所配组合B优840和C优2040已通过四川省农作物品种审定委员会审定。 相似文献
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转基因抗虫性水稻恢复系选育及特性分析 总被引：4，自引：1，他引：3
将优质抗稻瘟病水稻恢复系成恢177与转基因水稻Bt明恢63杂交并回交1次,采用PCR分析、试纸条检测、室内和田间人工接虫鉴定抗虫性,并结合系谱法选择农艺性状,病圃接种鉴定稻瘟病抗性,育成具转基因抗虫性的水稻新恢复系Bt5198。采用离体茎秆法接种二化螟卵块,新恢复系Bt5198和Bt明恢63的幼虫死亡率均为100%。在田间人工接虫条件下,该恢复系对二化螟和三化螟均表现高抗,与4个不育系配制的杂种F1仍保持良好的抗虫性,且杂种优势明显。两年稻瘟病抗性鉴定结果表明,新恢复系Bt5198的叶瘟和颈瘟抗性水平与成恢177相当,明显优于Bt明恢63。Bt5198的种子发芽率和花粉量与成恢177相当,Bt基因导入水稻恢复系不会对种子生活力和制种产量造成显著影响。在无选择标记基因的转基因后代中,结合利用试纸条检测和室内、田间人工接虫鉴定是筛选Bt基因抗虫性的有效方法。 相似文献
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GAO Fang-yuan REN Guang-jun LU Xian-jun HE Shu-lin CHEN Xiao-juan LU Dai-hua SUN Shu-xia LI Zhi-hua LIU Guang-chun ZHANG Yi-zheng 《水稻科学》2009,16(3):194-200
Bt5198, a new rice restorer line containing Bt gene, was developed from the cross and backcross of the elite restorer line Chenghui 177 with Bt Minghui 63, a transgenic Bt restorer line. The inbred lines were evaluated using PCR amplification, test paper evaluation, insect resistance evaluation in both the laboratory and paddy fields, nursery evaluation of rice blast resistance and pedigree selection of agronomic traits. Larval mortalities on Bt5198 and Bt Minghui 63 were 100% when rice culms were inoculated with the eggs of the striped stem borer (SSB) in the laboratory. Bt5198 was highly resistant against SSB and the yellow stem borer (YSB) under field conditions. The F1 hybrids derived from Bt5198 and four cytoplasmic male sterile (CMS) lines were also highly resistant to SSB and YSB and had a significant heterosis. Two-year evaluation of rice blast resistance confirmed that the resistance levels of Bt5198 to leaf blast and neck blast were similar to those of Chenghui 177 and significantly better than those of Bt Minghui 63. Seed germination ability and pollen yield of Bt5198 were similar with Chenghui 177, suggesting that the introduction of the Bt gene into the new restorer line had no significant effects on seed vitality or the yield of seed production. To identify the presence of the Bt gene, it was effective to combine test paper examination with the evaluation of insect-resistance, both in the laboratory and under field conditions. 相似文献
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