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介绍了天协6号水稻母本(宜香1A)与父本(宜恢1577)的特征特性,并总结了其在皖南地区的高产制种技术。 相似文献
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为探讨两系超级杂交早稻陆两优996高产优质制种原理与技术,对母本陆18S的生育特性、不育性表达、制种基地气候生态条件的要求、父母本生长发育规律、制种异交特性及异交栽培、提高种子发芽率等技术措施进行了研究。结果表明,该组合适宜在湖南一季稻区夏制,湘南双季稻区秋制;以育性敏感期、抽穗授粉期、成熟收获期的安全为前提选择制种基地和安排播种期;培育父母本多蘖壮秧、采用适当行比、适龄移栽、插足基本苗、定向培养父母本;父母本授粉态势的改良;制种要求田间纯度检测,全程严格去杂;综合制种技术措施提高种子发芽率。 相似文献
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根据杂交水稻制种父母本的特性,在掌握父母本制种播差期准确的情况下,针对由于土壤、气候、栽培、水肥管理等不到位造成部分制种田花期不遇的原因,提出父母本花期预测和调控技术,达到父母本花期基本相遇和全遇。 相似文献
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Using hybrid rice Yixiang1577 as the material, the mid-season and ratooning hybrid rice yield variation was studied in Southem Sichuan at different levels of nitrogen fertilizer. The results showed that rice yield by using N fertilizer increased to the most significant level than no fertilizer ones, and the mid-season rice and rice yield by using more N fertilizer increased to the significant level than less fertilizer ones. The rice yield by using no fertilizer ones increased to the most significant level than some used fertilizer, and the ratooning rice and rice yield by using more N fertilizer decreased to the most significant level than less fertilizer ones. The rice yield by using some fertilizer increased to the most significant level than no fertilizer ones for mid-season+rationing rice and rice yield by using some fertilizer had no obvious differences at different nitrogen levels. Therefore, application of fertilizer can improve yield of mid-season rice and mid-season+rationing rice. Soil test results showed that nutrient contents in rice field in South Sichuan were very rich in nitrogen, which could provide more adequate crop growth potential soil nitrogen nutrition. The crops with a deep root system had stronger ability of utilization on soil nitrogen. Therefore, the ratooning rice used no or little N fertilizer had a high yield performance because they made full use of soil nitrogen with deep root system. 相似文献
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BAO Lingfeng LIN Gang ZHAO Deming LI Yunwu HE Bing 《东北农业大学学报(英文版)》2007,14(4):301-305
Yihui1577 was bred after over 10 generations by crossing R16 and Yunnan purple rice.Many new hybrid rice varieties had been bred with Yihui1577,of which Gangyou1577,Ⅱyou1577,Nyou1577 and Yixiang1577 were certified by Sichuan Province Crop Variety Release Committee,Gangyou1577 and Yixiang1577 were certified by National Crop Variety Release Committee.The series varieties bred with Yihui1577 had been used widely with accumulated areas of 1 200 000 hm2.By using Yihui1577 as breeding material,an excellent restore line Yihui 3003 and some other restore lines,such as Yihui1979,Yihui 315 with good rice quality and good combination ability had been bred.Analysis of combination ability and stability about restore line Yihui1577 was made by using agricultural experimentation and statistical approach.The combination ability analysis was made in complete dual crossing method with 4 CMS lines and 6 restorer lines.It showed that the general combination ability effect value of Yihui1577 was 0.226,while Minghui63 was-0.113.So the general combination ability of Yihui1577 was prior to that of Minghui 63.Stability analysis showed that the F value of Gangyou1577 was 1.81378,while Sanyou 63 was 1.40327,both didn't reach significant level.So Gangyou1577 had the same stability as Sanyou63.The same conclusion had got in the stability analysis of the breeds ofⅡyou 1577,Yixiang1577,Nyou 1577 and so on. 相似文献
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以宜香1577和II优838为材料,在四川南部地区根据不同水稻品种植株一生需氮量和土壤供氮能力对杂交水稻生产中的氮肥用量进行分析.结果表明,从播种到成熟过程中,不同水稻品种植株体内氮含量不断增加,一直处于吸氮过程.四川南部地区杂交水稻生产中所需氮肥除化肥供给外,土壤也能提供比较丰富的氮素养料.四川南部土壤营养成分十分丰富,供氮能力极强,适合于水稻等耐肥农作物的生产.在杂交水稻生产过程中,施氮肥水平不应设计太高,必须将土壤供氮这一因素考虑进去,以免因氮肥过量而倒伏和减产. 相似文献
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超级稻宜优673遗传构成与籼粳属性分析 总被引:1,自引:0,他引:1
【目的】研究超级稻宜优673的遗传构成和籼粳属性,为其所携带有利基因的进一步利用提供基础,并为在水稻育种中确定合适的籼粳配比提供参考。【方法】选用明恢63、明恢86和福恢673这同一个衍生系统中不同辈序的骨干材料,以及以福恢673为父本配组育成的超级稻品种宜优673及相应母本宜香A,应用13个重要基因的17个标记和15个籼粳特异性SSR标记,分析其等位基因变化。【结果】受测材料在8个基因区间呈现差异,包括控制抽穗期和产量性状的基因2个、米质关键基因2个、抗稻瘟病基因4个。其中,在对稻米直链淀粉含量和胶稠度具有关键作用的Wx上,明恢63中的优质等位基因经明恢86传递到福恢673;在对稻米糊化温度具有关键作用的ALK及控制水稻稻瘟病抗性的Pib和Pita上,宜优673的父本福恢673和母本宜香A呈现出良好的互补性。在籼粳属性上,明恢63、明恢86和福恢673均为中间偏籼型,其中,明恢86和福恢673的粳型成分均为40.0%,高于明恢63的33.3%。【结论】来源于明恢63和其它亲本的有利等位基因在福恢673中聚合,并进一步在宜优673中与宜香A有利等位基因形成互补。 相似文献
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硒(Se)、硅(Si)在减少植物对Cd的吸收方面有着积极作用。以籽粒低镉积累杂交籼稻宜香2115和籽粒高镉积累杂交籼稻川谷优2348为材料进行大田试验,研究Se、Si及其配施对杂交籼稻Cd及矿质营养元素含量的影响。结果表明:Se、Si对水稻茎、叶、穗和糙米中Cd、Ca、Cu、Mn、Zn、Se和Si含量有显著影响。川谷优2348中Cd、Ca、Cu、Mn和Zn含量均显著高于宜香2115,Se和Si含量则低于后者。Se、Si降低宜香2115茎秆Cd、Cu、Mn含量、穗部Cu含量及川谷优2348叶片Cd含量,增加了两个品种叶片及川谷优2348茎秆中Ca含量。Si+6μmol/L Se处理显著降低宜香2115茎秆中Zn、叶片中Cd、川谷优2348茎秆Mn以及穗部Ca含量,促进宜香2115叶片Cu、Zn含量的升高;Si+12μmol/L Se处理抑制川谷优2348茎秆Cd、Zn和宜香2115穗部Zn的积累,促进川谷优2348茎秆中Cu和穗部Mn、Zn的积累。所有Se、Si处理均降低宜香2115穗部Cd含量,但高浓度Se处理下川谷优2348穗部Cd含量下降幅度变小甚至略升。宜香2115在单施6μmol/L Se下糙米Cd含量最低,川谷优2348则在Si+6μmol/L Se和12μmol/L Se下糙米Cd含量最低。 相似文献
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金优458是江西省农业科学院水稻研究所用优质不育系金23A与早稻强恢复系R458配组而成的高产早籼迟熟组合。本文介绍了超级稻金优458亲本的主要特征特性及该组合春季制种母本直播高产技术。 相似文献
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选用7对SSR引物对7个水稻×玉米远缘后代不育株系及其双亲进行SSR分析。与母本扩增带型相比,共扩增出18条特异带,即表现为多态性。在检出的18条特异带中,13条的带型与父本相同,另5条的带型不同于双亲,即为变异带型。7个参试后代不育株系都检测到了SSR多态性标记,但各株系间检出多态性位点的数量存在差异,最多的一个株系ys-2同时检测到3个多态性标记。试验结果表明通过远缘杂交技术很可能将玉米的某些DNA片段成功地导入了水稻两用核不育系,表明研究在籼稻两用核不育系的改良上取得了初步的成果。 相似文献