共查询到19条相似文献，搜索用时 166 毫秒
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丰产优质棉花新品种陕棉2177 总被引：1，自引：0，他引：1
陕棉2177是西北农林科技大学1997年以综合性状好、纤维品质优良的陕棉2234为母本,兼抗枯黄萎病的抗源材料陕2059为父本杂交,后代在人工枯萎病、黄萎病混生病圃经过多年连续选择鉴定培育而成。2007年经陕西省农作物品种审定委员会审定。 相似文献
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正科伟11是由河北科伟种业开发有限公司和固安县农业局合作选育的高产稳产多抗冬小麦新品种,2016年10月通过河北省品种审定委员会审定,审定编号为冀审麦2016028号。该品种产量三要素协调,综合抗性好,稳产性好,适合在河北中北部、北京、天津冬麦区推广种植。1品种选育1.1品种来源科伟11是由河北科伟种业开发有限公司和固安县农业局合作以轮选987为核心亲本构建的矮败小麦轮回选择群体中选育而成。 相似文献
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针对关中及同类麦区普遍存在的冷热旱害,病害、倒伏、穗发芽等突出问题及大众消费需求,开展了高产多抗优质小麦新品种选育研究。以太谷核不育小麦种质为遗传背景,采用轮回复交技术,轮回选择与系统选育相结合,在基因累加和性状聚合上采用不同的优先序,实施多性状聚合并缩短育种进程。结果表明：育成的小麦品种‘陕512’,具有以下突出特点：（1）高产稳产：陕西省区试连续三年产量名列前茅,生产上多次涌现9750 kg/hm2以上的田块。（2）综合抗性好,适应性广：冬春抗旱,抗干热风,抗穗发芽,对白粉病等病害有足够的抗性,茎秆粗壮抗倒,叶功能好,籽粒灌浆充分,粒大饱满。（3）品质优良：商品性优异,蒸煮品质好。‘陕512’在育种技术创新方面,一是完善了小麦蛋白质组成SDS-PAGE和A-PAGE测试技术、辩读与评价方法,发现并运用了HMWgs14+15的优质效应;二是创新了利用太谷核不育进行性状聚合的杂交策略和选育技术,创造了从组合配置到省级审定仅用7年的小麦高效育种纪录;三是解决了大穗大粒品种难以高产、高产不优质、优质与抗病抗逆性难以结合的技术难题。 相似文献
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汝麦0319是河南省汝州市农科所利用太谷核不育系轮回选择培育的半冬性小麦品种.该品种属多穗型中熟品种,矮秆抗倒,高产稳产,适应性广,通过近几年试验示范,广泛适应河南省及周边高水肥地中早茬种植.河南国家小麦工程技术开发有限公司已独家买断了该品种的生产经营权.好的新品种育成后只有应用于农业生产,才能将科技成果转化为现实生产力,这就需要建立完善的良种繁育与推广体系. 相似文献
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优质高产玉米新品种陕单16的选育及应用 总被引：16，自引：1，他引：15
优质高产玉米新品种陕单16是由西北农林科技大学农学院专用玉米研究室于1995年用自选系Y75为母本,以所内自交系K12为父本杂交育成。2002年2月陕西省31次农作物品种审定委员会审定,准予推广。1999~2001年参加陕西省玉米区试、生产试验表现出营养品质及外观品种优良,综合抗性好,丰产潜力大,中熟种,持绿期长,保绿度好,产草量高,可粮饲兼用或带棒青贮等特点。适宜在陕西春播,早夏播及同类生态区推广种植。到2002年底陕单16累计推广面积1万hm2,“玉米新种质自交系Y75及其陕单16杂交种配制方法”已申报国家发明专利保护（公开号为CN1372789A,申请号为02114490.7）。 相似文献
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强筋型优质小麦新品种陕253的选育及其主要特征特性研究*
Ⅰ 强筋型优质小麦新品种陕253的选育研究 总被引：2，自引：0，他引：2
陕253是西北农林科技大学农学院小麦研究所育成的优质小麦新品种，其组合为陕229/陕213，它集优质、丰产、早熟于一体，具有面团形成时间和稳定时间长等突出的品质特征。其成功选育说明：优质与高产能够完美结合；选择农艺性状优良互补、遗传背景复杂、品质较好的双亲是育成优质品种的基础；有效的品质测试手段是选育优质品种的保障。 相似文献
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陕西省的区域试验、生产试验、品种比较试验、栽培试验、高产示范试验及全国联合鉴定试验以及品质鉴定试验结果表明：小麦新品种陕253属半冬性,生长健壮,株型紧凑,株高适中;成熟早,落黄好;对条锈病、白粉病、叶枯病等主要小麦病害有中等以上抗性,适应性广;面筋含量高、面团形成时间和稳定时间长等优良的品质特征。在试验条件下,籽粒产量水平与生产上大面积推广的品种陕229持平或略高,高于小偃6号、陕麦150、小偃54、高优503、陕优225等优质品种,在中上生产条件下易于达到6750 kg／hm2以上,具有7500 kg／hm2以上高产潜力,有广阔的推广利用前景。 相似文献
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陕棉4080是以冀合232为母本,中164为父本杂交,在枯、黄萎病圃种植选择抗病性;水、旱地交替种植选择抗旱性与丰产潜力;在不同环境胁迫压力下,连续选择而成。该品种丰产、优质、抗枯、黄萎病,中抗棉铃虫、耐旱、耐盐碱,1998—1999年陕西省区试结果比对照中19增产霜前皮棉39.0 %。2000—2001年国家黄河流域区试结果,比对照中12增产霜前皮棉23.0%,居首位。证明在多种环境胁迫压力下育成的棉花品种具有广泛的适应性、较强抗逆性和较大的生产潜力 相似文献
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Summary Evaluation of the results of six years of selection in the Kitale maize breeding methods study proved reciprocal recurrent selection to be an effective interpopulation improvement method. Ear-to-row selection was effective in improving Kitale Composite A (KCA). Data from a diallel of the cycle-6 ear-to-row substrains showed that where less than 10 lines were selected, inbreeding appeared to depress gain, but differences among the various ear-to-row experiments were not significant. Intererossing the substrains was predicted to reduce the effect of inbreeding. Yield gains in reciprocal recurrent selection and ear-to-row selection were associated with increases in ears per 100 plants. The reciprocal recurrent selection variety cross yield gain was estimated at 3.5% per year (7%/cycle) and that of the best ear-to-row procedure at 2.6% per year. The variety cross syn-2 from reciprocal recurrent selection was predicted to improve at the same rate as the best ear-to-row procedure (E7) with one long growing season per year. Under a cropping system with two similar seasons per year, however, ear-to-row selection should be more effective than reciprocal recurrent selection or its derived syn-2. Mass selection at 10% selection intensity produced significant improvement, but not at 2% selection intensity.S1 and three half-sib selection methods were ineffective in KCA. Inbreeding and the lack of linkage equilibrium in KCA were discussed as contributing. Theoretical substrain compositing required 30 to 40 lines selected to equal the effectiveness of ear-to-row selection with 10 lines. Full-sib selection was effective in improving yield at 1.2% per year. All the recurrent selection methods showed a significant increase in ears per 100 plants. Population size was shown to be important in reducing losses due to inbreeding.If a hybrid or variety cross is potentially useable, reciprocal recurrent selection provides the best population approach. Initially, the variety cross syn-2 could be released with no additional breeding effort. Transition to variety crosses or traditional hybrids from extracted lines could be done as farmer husbandry improves and seed production facilities develop. Otherwise, open-pollinated varieties superior to existing maizes can be effectively developed using ear-to-row selection. The other methods may be effective in breeding populations when larger effective population sizes are used, but they were not effective in KCA when only 10 lines were recombined each cycle.Contribution from the East African Agriculture and Forestry Research Organization of the East African Community, the U.S. Agency for International Development (Project 618-11-110-657, East African Food Crop Research), the Kenya Ministry of Agriculture, and the Agricultural Research Service of the U.S. Department of Agriculture. 相似文献
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