共查询到20条相似文献，搜索用时 46 毫秒
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浚单20是河南省浚县农科所以9058为母本,浚92-8为父本,经杂交选育而成的高产玉米单交种,该品种2003年先后通过河北省农作物品种审定委员会、河南省农作物品种审定委员会和国家农作物品种审定委员会审定。品种审定编号：国审玉2003054。 相似文献
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浚单22高产栽培技术 总被引：1，自引：0，他引：1
浚单22是河南浚县农科所育成的高产、稳产、优质、多抗、广适的玉米品种,2004年通过河南省农作物品种审定委员会审定,编号为豫审玉2004012;2005年通过河北省农作物品种审定委员会审定,编号为冀审玉2005003。2006年“浚单22玉米杂交种的试验与示范”被列为河南省农业科技成果转化资金项目。玉米要想高产,良种良法是关键,现将浚单22夏玉米高产栽培技术总结如下。 相似文献
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冀玉九号玉米制种高产栽培技术 总被引：1，自引：0，他引：1
冀玉九号是河北省农科院冀丰种业有限责任公司选育而成的玉米杂交种。具有高产、稳产、抗病、抗倒、适应性广,高抗玉米大斑病、小斑病的特点。2001年经河北省农作物品种审定委员会审定（编号2001～2002）,2003年通过国家农作物品种审定委员会审定,已在全国各地大面积推广种植。 相似文献
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邯杂98-1是河北省邯郸市农科院选育的三系抗虫杂交棉品种，2005年3月通过河北省农作物品种审定委员会审定，2006年通过国家农作物品种审定委员会审定。河南省南阳市种子管理站2002年将该品种引入南阳棉区试验。 相似文献
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中国稻草还田技术研究进展 总被引：5，自引：2，他引：3
随着中国农业的发展,大量稻草被焚烧或者弃置,这不仅浪费了养分资源还造成环境污染。本文综述了稻草还田的方式方法,稻草还田对土壤性状及水稻产量的影响以及稻草还田对水稻氮素吸收和氮肥利用率的影响,以期待稻草还田技术可以进一步推广应用。 相似文献
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中国牧草育种工作研究进展 总被引：4，自引：0，他引：4
在综述中国牧草育种工作进展的同时,分析了牧草育种工作中存在的问题,主要包括育成的牧草品种少,良种推广和覆盖面积较小以及牧草育种理论基础薄弱等,并针对性地提出应从改进牧草育种的方法和途径、培育具有地方特色的独特牧草品种、加强种质资源的保护与利用、加快良种向现实生产力的转化以及通过各部门协作攻关等方面解决这些问题。 相似文献
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兰花试管开花研究进展 总被引：3，自引：1，他引：2
对兰花试管开花方面的研究进行了综述,着重介绍了兰科植物试管开花的影响因素及其调控和分子机理等方面的研究情况,指出目前存在的若干问题并提出解决对策。 相似文献
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Twenty two Uromyces appendiculatus isolates were tested on 20 differential and 25 Ecuadorian Phaseolus vulgaris cultivars in the seedling stage. Based on the infection types 20 races could be discerned. The Ecuadorian cultivars differed
greatly in their reaction to the isolates, from resistant to only one isolate (`Red Small Garden') to resistant to all isolates
(’G2333‘). The isolates showed a wide range of virulence to the Ecuadorian cultivars, from virulent to only two cultivars
(isolate 13) to virulent to 21 cultivars (isolates 5 and 23).
Seven cultivars with a basically susceptible infection type appeared to differ greatly in quantitative resistance when tested
in three consecutive crop cycles. The disease severities in percentage leaf area affected averaged over the three cycles ranged
between 83.9% for ‘Red Small Garden’ and 13.1% for ‘INIAP-414’.
Race-specific resistance does not seem an advisable breeding strategy, but the quantitative resistance offers a good alternative. 相似文献
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低温胁迫是限制植物生长发育和地理分布最主要的环境因子之一,影响植物细胞膜系统、抗氧化系统、光合作用、次生代谢等诸多方面,对农业生产和发展有严重影响。因此,揭示作物在冷胁迫下的生理及分子机制是十分必要的,这有助于培育耐寒作物品种,从而减少生产损失,扩大作物种植面积,具有重要的生产价值和经济效益。目前,基于RNA-seq技术进行植物低温胁迫分子机制深度解析在拟南芥、水稻、油菜、茶树、小麦、烟草、高粱等重要作物上得到了发展应用。本研究综述了近年来植物在低温胁迫或低温适应过程中的转录组学研究现状,以期为高通量测序技术在植物抗性研究方面提供方法借鉴和理论基础。 相似文献
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Toshihiro Saito 《Breeding Science》2016,66(1):46-59
The Japanese pear (Pyrus pyrifolia Nakai) is one of the most widely grown fruit trees in Japan, and it has been used throughout Japan’s history. The commercial production of pears increased rapidly with the successive discoveries of the chance seedling cultivars ‘Chojuro’ and ‘Nijisseiki’ around 1890, and the development of new cultivars has continued since 1915. The late-maturing, leading cultivars ‘Niitaka’ and ‘Shinko’ were released during the initial breeding stage. Furthermore, systematic breeding by the Horticultural Research Station (currently, NARO Institute of Fruit Tree Science, National Agriculture and Food Research Organization (NIFTS)) began in 1935, which mainly aimed to improve fruit quality by focusing on flesh texture and black spot disease resistance. To date, 22 cultivars have been released, including ‘Kosui’, ‘Hosui’, and ‘Akizuki’, which are current leading cultivars from the breeding program. Four induced mutant cultivars induced by gamma irradiation, which exhibit some resistance to black spot disease, were released from the Institute of Radiation Breeding. Among these cultivars, ‘Gold Nijisseiki’ has become a leading cultivar. Moreover, ‘Nansui’ from the Nagano prefectural institute breeding program was released, and it has also become a leading cultivar. Current breeding objectives at NIFTS mainly combine superior fruit quality with traits related to labor and cost reduction, multiple disease resistance, or self-compatibility. Regarding future breeding, marker-assisted selection for each trait, QTL analyses, genome-wide association studies, and genomic selection analyses are currently in progress. 相似文献