优质香型三系不育系晶泰A的选育与应用

晶泰A是以粤丰B与自育保持系中间材料9123（中9B/123）杂交制保后,再与中9A测交并连续多代回交转育而成的优质籼型三系不育系。该不育系花粉败育彻底、异交结实率高、稻米品质优良、有香味。2020年通过江西省农作物品种审定委员会审定。所配组合晶泰优粤农丝苗、晶泰优818和晶泰优莉香已分别通过国家、江西省和湖南省品种审定。     

优质水稻三系不育系贵A的选育与应用

贵A是广东省农业科学院水稻研究所以优质三系保持系广8B为母本与自选保持系中间材料“(58S/天丰B//天丰B)F₂//增丝选/325B”杂交，之后经多代定向选择并选优良单株与广8A测交与连续回交转育而成的优质水稻三系不育系，2019年10月通过广东省农作物品种审定委员会组织的技术鉴定。该不育系具有不育性稳定、配合力强、开花习性好、闭颖性好、易繁制种等特性，已组配贵优55、贵优华占、贵优9822通过国家品种审定。     

水稻籼型三系不育系秋实A的选育

秋实A系湖南怀化职业技术学院以自选保持系改造中间材料(金23B/岳4B)为母本,安丰B为父本进行杂交改造,再与金23A测交并连续回交转育而成的水稻籼型三系不育系。介绍了其选育过程、主要特征特性及初步配组利用和繁殖技术要点。     

互作型弱感光性籼稻不育系广星A的选育与利用

广星A是广东省农业科学院水稻研究所以自育的保持系中间材料19B与感温性保持系天丰B杂交制保,再与高异交率的优ⅠA杂交和多代回交转育而成的互作型弱感光性籼稻不育系。该不育系株叶形态好,穗大粒多,耐肥抗倒,抗病性好,不育性稳定,配合力强,异交结实率高,繁制产量高,于2017年通过广东省种子管理总站鉴定。广星A所配的杂交组合广星优289、广星优8689、广星优青占和广星优1380先后通过省级或国家审定。     

杂交稻混杂原因研究 Ⅲ、不育系本身的育性变化

材料和方法试验材料是用纯的珍汕97A、V20A、V41A三个不育系及其对应的三个纯的保持系珍汕97B、V20B、V41B。试验方法:首先,鉴定不育系原种植株群体的育性,调查其杂株率。其次,在隔离的条件下,让不育系自交结实,其后代植株分为A型(株型及育性同不育系)、B型(株型及育性同保持系)、AB型(株型及育性介于不育系和保持系之间)、C型(株型及育性同恢复系)、AC型(株型及育性介于不育系和恢复系之间)和大青棵(不抽穗)。     

优质、抗稻瘟病香型水稻三系不育系繁源A的选育

以长丰B为母本,乐丰B为父本杂交配组选育保持系,再与乐丰A测交、回交转育,育成野败籼型香稻三系不育系繁源A,于2013年通过福建省品种审定。结果表明,繁源A不育性稳定、配合力强、异交率高、抗稻瘟病、米质优异有香味。     

早熟籼稻不育系早丰A的选育及应用

早丰A是广东省农科院水稻研究所以自选保持系材料71B为母本,米31/W254杂交F_3代株系为父本进行人工杂交,然后从F_4代选择优良株系与印尼水田谷胞质不育系荣丰A测交并连续回交转育而成的早熟籼稻不育系。该不育系具有败育彻底、育性稳定、柱头外露率较高、开花习性较好、异交结实率较高、配合力好等特点,2012年通过广东省种子管理总站组织的专家技术鉴定。已先后配制出早丰优402、早丰优华占、早丰优107和早优736等多个组合分别通过国家或省级品种审定。     

低直链淀粉含量水稻三系不育系百香A的选育与应用

百香A是以中浙A为母本，三交保持系材料中浙B/巴西陆稻//IR58025B为父本，经过多代回交转育而成的低直链淀粉含量软米型水稻三系不育系，2015年通过了广西水稻不育系田间技术鉴定。用其所配制的杂交稻组合稻米品质优，外观商品性好，具有良好的开发应用价值。     

优质水稻三系不育系鼎A的选育

鼎A是玉林市农业科学院暨广西农业科学院玉林分院利用博B与优质保持系高世代材料(矮泉22/巴利拉)杂交制保后的F_7单株与玉A测交、回交转育而成的水稻三系不育系。该不育系花粉败育彻底,不育性稳定,配合力强,异交结实率高,米质优,2015年11月通过广西科技厅组织的专家技术鉴定。     

优质抗病早熟水稻不育系早香A的选育与应用

早香A是内江杂交水稻科技开发中心从配制“1268B/177B(D香1B/D香2B)”保持系材料组合中选育优良单株与高原粳型不育胞质不育系88A测交和回交转育而成的优质抗病香型三系新不育系。早香A败育彻底,花粉败育度和不育株率均为100%;熟期较短,比宜香1A短12～15 d;抗病性强;稻米品质优。所配杂交组合早香优3203和早香优595已通过四川省品种审定。     

早熟抗稻瘟病籼型水稻不育系荣丰A的选育与利用

荣丰A是广东省农科院水稻研究所用优ⅠB/博B的F4代优良株系与优ⅠA测交并连续回交转育而成的早熟抗稻瘟病籼型不育系,2005年10月通过广东省技术鉴定。荣丰A表现株型紧凑,不育性稳定,配合力强,抗稻瘟病,柱头外露率高,异交结实率高,对“九二○”敏感,易于繁制种。利用该不育系初步测配出杂交早稻荣优2号、荣优3号和荣优4号,在区试和试种中均比对照增产。     

优质香稻不育系君香A的选育

君香A是以岳4B×五岭香丝苗的F_3单株与岳4B回交1次,在其自交F_3代中选株与金23A测交并连续回交后转育而成的香稻三系不育系.该不育系具有农艺性状优良、香味浓郁、可恢性好、配合力强、繁殖制种产量高、米质优(部颁1等优质米)等特点,2008年3月通过湖南省品种审定.     

优质籼型水稻不育系京福4A的选育

京福4A是用京福4B(冈46B/枝B)与枝A测交并逐代回交转育而成的籼型水稻三系不育系.该不育系熟期较早、米质较优、穗大秆粗、株型良好、配合力强,不育性稳定,不育株率100％,花粉败育率99.99％,于2004年6月通过福建省技术鉴定.用京福4A配组育成的杂交稻新组合京福4优13于2010年通过江西省品种审定.     

利用香稻改良杂交水稻稻米品质

To improve grain quality of the high-yielding hybrid rice in China, we introduced the aromatic rice MR365, an improved Indian cultivar with aroma and other desirable grain quality characters such as long grain and low chalkiness, from IRRI in 1984 and began to transfer its aroma and good quality characters into the existing maintainer lines with good combining ability but poor grain quality. In the meantime, we also conducted the research on the inheritance of aroma for increasing the breeding efficiency. Through years of research and breeding practices, two cytoplasmic male sterile (CMS) lines Xiangxiang 2 A and Xinxiang A and a series of quasi-aromatic hybrids mated from these aromatic CMS lines have been developed and released for commercial production in China. It was found that the inheritance of aroma in MR 365 and its derivatives including Xiangxiang 2 A, Xinxiang A and Xiang 2B S was controlled by one pair of recessive major genes based on the identification of aroma by the KOH-soaking method. We also found that there existed disparity in aroma degree among different grains of F2 generation, and different aromatic CMS lines derived from the same aromatic donor such as Xiangxiang 2 A and Xinxiang A had also a little difference in the degree of aroma, which implies that, besides the major genes, aroma may also be affected by the genetic backgrounds or minor genes. Xiangxiang 2 A, developed from the cross of V20A∥V20B/MR365, is the first aromatic CMS line bred in China. It is not only aromatic but has good grain quality and combining ability. Using it as female parent, Xiangyou 63 (Xiangxiang 2A/Minghui 63), the first quasi-aromatic hybrid rice combination in China, was developed and approved to release to farmers in 1995. Xiangyou 63 is characteristic of quasi-aromatic or partially aromatic (because only a portion of or NOT ALL grains are aromatic), good grain quality, high-yielding ability, good blast resistance and wide adaptability. However, Xiangxiang 2 A has an evident drawback, i.e., instablility in male sterility under higher temperature conditions resulting from the existence of restoring minor genes in it, which greatly hampered the extension of its elite hybrid Xiangyou 63 with both high yield and fine quality in commercial production. To improve Xiangxiang 2 A, we made hybridization of Xiangxiang 2 B with V20 B again in 1990. A new aromatic CMS line Xinxiang A was successfully developed in 1994. It not only retains the favorable characteristics of Xiangxiang 2 A in grain quality and combining ability, but also expresses complete and stable male sterility and high seed production yield potential. Up to now, by using it as female parent, a series of quasi-aromatic hybrids have been developed. Some of them such as Xinxiangyou 63 (Xinxiang A/Minghui 63), Xinxiangyou 77 (Xinxiang A/Minghui 77), Xinxiangyou 80 (Xinxiang A/R80), Xinxiangyou 207 (Xinxiang A/R207) and Xinxiangyou 96 (Xinxiang A/R96) have been released to farmers. Such hybrids have been preferred and well welcome by the farmers in China, because they can not only yield higher or as high as but also possess a better grain quality than the current common high-yielding hybrid rice varieties, especially, they are naturally-mixed aromatic rice so that it can be consumed daily just like non-aromatic common rice. The planting area under these hybrids is increasing rapidly in China. It is expected that the quasi-aromatic hybrid rice will have a good prospect in the coming years.     

中熟早籼三系不育系顺天A的选育与应用

顺天A是怀化市农业科学研究所以T98A作母本,(金23B/D68)F10/泸香B聚合杂交后代优良单株作父本测交,并经多代择优回交转育而成的具有软米特性的中熟早籼三系不育系。该不育系育性稳定,农艺性状优良,米质优,配合力较强,可恢复性好,2010年通过湖南省品种审定。     

优质高产香型杂交稻新组合香优63

Xiangyou 63 was developed at HHRRC using aromatic cytoplasmic male sterile line Xiangxiang 2A and non-aromatic restorer line Minghui 63. It was released to farmers in Jan 1995. Xiangyou 63 is the first quasi-aromatic hybrid rice in China, and Xiangxiang 2A, developed from the cross V20A∥V20B/MR365 by HHRRC, is the first aromatic CMS line in China. The hybrid has so far been planted on more than 20 000 hm2 and seems popular with farmers and consumers. In addition to being aromatic, the hybrid has good grain quality, high-yielding ability, good disease resistance, and wide adaptability.     

优质长粒型粳稻不育系常410-2A的选育

常410-2A是常熟市农业科学研究所和江苏中江种业股份有限公司以BT型粳稻不育系武运粳7号A为母本,常农粳5号/常01-11B的F5代稳定品系为父本,经多代回交转育而成的长粒型粳稻三系不育系,2018年9月通过江苏省农作物品种审定委员会育性鉴定.常410-2A不育性稳定,具有优质、早花时、张颖角度较大、柱头部分外露、异...     

优质粳型不育系爱知香A的选育与利用

爱知香A是用日本优质抗病粳稻品种爱知香与BT型不育系六千辛A测交并连续回交转育而成的早熟中粳不育系，具有米质优、抗病性强，农艺性状优良、花粉败育彻底、配合力好等特点，2002年8月通过江苏省技术鉴定，2003年1月通过江苏省品种审定。利用其配制的杂交粳稻新组合香优18(爱知香A/MR18)表现优质，高产，抗病，于2003年1月通过江苏省品种审定。     

籼型三系不育系九丰A的选育

以金23A为母本,688B/福伊B的F4代单株为父本测交,经多代择优回交,育成早熟籼型三系不育系九丰A。该不育系具有育性稳定、抗瘟性好、农艺性状优良、早熟、可恢复性和配合力好等特点。2003年10月通过福建省科学技术成果鉴定。     

野败型籼稻不育系中新A的选育

中新A是以中浙A为母本,印32B/协青早B的F4代优良单株为父本,经测交和多代回交转育而成的中籼不育系。中新A于2006年通过浙江省科技成果鉴定,表现株型适中、柱头外露率高、开花习性好、配合力好。特别适宜与含粳稻成分较多的恢复系配组,组配的组合生育期明显短于协青早A所配组合,对解决籼粳亚种间杂交F1代生育期过长具有积极意义。