共查询到19条相似文献，搜索用时 218 毫秒
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川优673在尤溪县作烟后稻种植表现及高产栽培技术 总被引：1，自引：0，他引：1
川优673是福建省农科院水稻研究所利用引进的优质不育系川香29A与自育强恢复系福恢673杂交配组育成的三系优质杂交水稻新组合,2009年通过福建省农作物品种审定,具有穗大粒多,结实率高,产量高,米质好,适应性广,综合抗性较强等优点.介绍了川优673在尤溪县作烟后稻种植表现及高产栽培技术. 相似文献
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高千粒重优质恢复系绵恢3728的选育与利用 总被引：2，自引：0，他引：2
绵恢3728是绵阳市农业科学研究所以高千粒重恢复系辐恢838为母本、优质低垩白恢复系绵恢725为父本杂交选育而成的高千粒重优质恢复系。该恢复系株型紧凑,植株高大,千粒重38 g左右,米质达国标优质稻谷3级标准,恢复力强,配合力好,花粉量充足,制种易获高产,于2004年8月通过四川省技术鉴定。所配组合宜香3728(宜香1A绵/恢3728)米质达国标优质稻谷2级标准,于2005年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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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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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. 相似文献
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优质籼稻不育系95A的选育 总被引：1，自引：2，他引：1
９５Ａ是用９５占为父本、珍汕９７Ａ为母本杂交，再连续回交选育成的野败型不育系，不育性稳定，株叶型和粒型好，分蘖力强，有效穗多，穗长粒多，米质好，抗性好，柱头外露率高，异交结实率高，易于繁殖、制种。１９９６年７月通过技术鉴定。 相似文献
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优质高产抗病杂交晚稻中9优801的选育与应用 总被引：4，自引：2，他引：4
中9优801是江西农业大学农学院用中9A与优质抗病高配合力恢复系R801配组而成的籼型杂交晚稻新组合.该组合具有优势强、丰产性好、米质优、抗稻瘟病、再生力强、制种易获高产、适应性广等特点,于2003年3月通过江西省农作物品种审定委员会审定.介绍了其选育过程、特征特性、栽培及制种技术要点. 相似文献