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两系杂交早稻田两优402亲本开花习性探讨 总被引:2,自引:0,他引:2
:通过比较F131S、优IA和R402的开花习性,发现F131S柱头外露率低、开花不集中、与父本开花不同步等是造成田两优402制种产量不高的主要原因;并就如何提高田两优402的制种产量进行了探讨 相似文献
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杂交早稻K优402在浙江的表现及高产栽培技术PerformanceofearlyhybridriceKYou402anditscultivationatWenzhou,Zhejiang叶曙光(浙江省温州市种子公司325005)K优402是四川省农科院... 相似文献
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优质杂交早稻新组合金优402Jinyou402,anearlyhybridricecombinationwithfinequality唐显岩李必湖贾先勇(湖南省安江农校418100)(湖南省常德市农科所金优402是湖南省安江农校与常德市农科所于199... 相似文献
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华两优105是以早熟早籼型温敏核不育系M103S为母本,与早稻新品系T1007配组而成的两系法杂交早稻新组合,具有熟期早、产量高、稳产性好等特点,2005年1月通过江西省农作物品种审定.介绍了该组合的主要特征特性、栽培和制种技术要点. 相似文献
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杂交早稻威优402的选育及应用 总被引:2,自引:0,他引:2
威优402是用V20A与R402配制的杂交早稻新组合。恢复系用制3-1-6/IR2035,经多代选育而成。该组合具有丰产性好,抗稻瘟病,米质较优等特点。本文对威优402的选育过程、特征特性及其应用,作了较详细的介绍。 相似文献
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株两优173是用低温敏两用核不育系株1S和株173杨制而成的两系法中熟杂交早稻新组合。介绍了株两优173及其亲本的选育经过与主要特征特性,提出了其栽培与制种的技术。 相似文献
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金优L2系用金23A与RL2配组育成的江西米粉专用三系杂交早稻新组合.表现产量高,稳产性好,适应性广,适宜江西各地作双季迟熟早稻种植,2008年通过江西省品种审定. 相似文献
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江西省冷害发生规律研究及水稻种植制度分析 总被引:1,自引:0,他引:1
以江西省81个常规气象观测站1961-2012年的数据为基础,对江西省"倒春寒"及"寒露风"的发生规律进行分析,确定江西省适宜的水稻种植制度。分析结果显示,受全球气候变暖的影响,江西省"倒春寒"灾害气候发生风险总体呈降低趋势;在年平均气温和秋季平均气温升高的背景下,"寒露风"灾害气候发生的风险并没有降低,且有提前出现的趋势。因此,在水稻种植制度上,除了选用耐寒性好的品种外,还应合理扩大"中熟-中熟"的搭配种植模式,同时应尽量避免双季杂交晚稻的直播栽培。 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
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Recent Advances in Development of Herbicide Resistant Transgenic Hybrid Rice in China 总被引:3,自引:0,他引:3
XIAO Guo-ying 《水稻科学》2009,16(3):235-239
In addition to weed control in direct seeding field of hybrid rice, herbicide resistance genes were used by Chinese scientists to increase and identify the purity of hybrid seeds, and to realize the mechanization of hybrid seed production. The elite restorer lines, such as Minghui 63, R752, T461, R402, D68 and E32 were transformed directly with herbicide resistance genes, in which D68 and E32 are restorer lines of two-line system and the others are of three-line system. Because almost all of important restorer lines are indica varieties and are recalcitrant in transformation, many herbicide resistant near-isogenic restorer lines were developed by sexual hybridization of indica and japonica varieties and backcross with indica restorer lines later, such as Ce 64, Minghui 63, Teqing, Milyang 46, R402 and 9311, in which 9311 is a restorer line of two-line system. The elite photoperiod-sensitive/thermo-sensitive genic male sterile lines, such as Pei'ai 64S, P88S, 4008S and 7001S, were transformed with herbicide resistance genes. A few herbicide resistant male sterile lines were developed through sexual hybridization and subsequently systemic selection, such as Bar1259S, Bar2172S, 05Z221A and 05Z227A. With the employment of herbicide resistant male sterile lines or herbicide resistant restorer lines, a few herbicide resistant hybrid rice combinations were developed, such as Xiang 125S/Bar 68-1 and Pei'ai 64S/Bar 9311. Based on herbicide resistance, the research was marching on to investigate the parental lines of hybrid rice with insect resistance, drought tolerance, etc. 相似文献
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宜优673在修水县作再生稻示范表现及栽培技术 总被引:1,自引:0,他引:1
宜优673是福建省农科院水稻研究所用宜香1A与福恢673配组育成的籼型三系杂交稻新品种。2010-2011年江西省修水县引进作再生稻试种示范,表现高产稳产、再生能力强、熟期适中、抗性较强。介绍了宜优673在修水县作再生稻示范表现及高产栽培技术。 相似文献