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我县1998年籼型杂交水稻制种,汕优63平均单产3.13t/hm^2,Ⅱ优63平均单产5.64t/hm^2,最高单产6.24t/hm^2。为进一步确保制种稳产高产,需要掌握杂交亲本的开花习性及其规律,为制种工作采取适当措施,促进花期花时相遇,提高异交受粉结实率提供科学依据。1999年,我们进行了制种亲本的花期花时观察。 相似文献
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该品种由麻阳苗族自治县种子公司选配育成,三系杂交水稻中熟组合。2005年1月通过湖南省农作物品种审定委员会审定,2003年参加湖南省中稻区试,平均产量8055kg/hm^2,比对照金优207增产11.1%。2004年湖南省区试,平均产量7629kg/hm^2,比对照金优207增产6.3%,全生育期128d。其表现为丰产性好、抗逆性强,米质优,一般产量7500~9000kg/hm^2,最高产量9750kg/hm^2,粮农反映很好。为探索T优82高产制种技术,通过几年的制种实践,春季制种产量一般3600~3750kg/hm^2,最高产量达4658kg/hm^2。现就其制种技术要点总结如下: 相似文献
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肃州区位于甘肃省河西走廊西端,光照资源丰富,具备良种生产必需的自然条件,已成为全国重点玉米制种基地。本公司本着提高产量、农民增收、稳定基地为出发点,年玉米制种面积2000hm^2,平均产量达6750kg/hm^2以上。现将玉米制种高产栽培技术总结如下: 相似文献
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该品种系中国水稻所育成的优质籼型高产组合,全生育期比汕优63短5天。分蘖中等,植株形态好,熟相好,中肥稳产,一般单产9000kg/hm^2左右,抗倒伏能力一般。米质优良,长宽比3:1以上。制种较容易,但是产量超过3000kg/hm^2易倒伏。 相似文献
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Ⅱ优航1号亲本特性及其高产制种技术 总被引:2,自引:0,他引:2
Ⅱ优航1号是福建省农科院水稻研究所利用航天育种技术创造的新恢复系航1号与不育系Ⅱ-32 A配组而成的三系籼型中晚稻新组合,于2004年12月通过福建省农作物品种审定委员会审定(闽审稻2004003).2005年通过国家农作物品种审定委员会审定(国审稻2005023).该组合2004年夏季制种,平均产量4.4 t/hm^2;2005年在福建省沙县基地制种12.3 hm^2,平均产量4.6 t/hm^2,高产田块达5.1 t/hm^2. 相似文献
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我县自2002年以来,连续2年制籼型杂交水稻Ⅱ优6078品种。面积逐年扩大,单产迅速提高,2003年制种面积13.1hm^2,经红河州有关专家和科技人员进行田间实产验收。并经种子入库数量核实,制种平均产量6812.1kg/hm^2,种子质量符合国家一级良种要求,其中有2.6hm^2平均产量7935.0kg/hm^2,实现制种单产的跳跃式发展。 相似文献
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介绍了运用冷冻干燥技术进行速溶蛋花汤的加工,研究了生产工艺、特点以及影响产品质量的主要因素。试验表明,采用冷冻干燥技术加工的速溶蛋花汤,具有营养丰富、风味独特、方便快捷等特点。 相似文献
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DENG Zhao-jing 《保鲜与加工》2005,(1):153-156
A new definition of inertia,i.e. the momentum is the measuring of inertia of matter, is proposed. The article through and etc., subjects, the correctness of the new notion of inertia:The monentum is the measuring of inertia has been demonstrated, and the unsolved contradictions of the traditional definition of inetia. And the mass is the measuring of inertia has been revealed. 相似文献
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香蕉是热带亚热带发展中国家重要的粮食作物和碳水化合物来源。但近年来,香蕉生产受到严重的病虫危害。大多数香蕉栽培品种是三倍体,生长周期长,而且不孕。由于没有种子,给繁殖和育种带来一定的困难。遗传转化技术的发展为香蕉品种的改良提供了一种有效的手段。香蕉的遗传转化方法有电激法、基因枪法、农杆菌介导法等。农杆菌介导法的应用是香蕉品种改良的一个重大突破。香蕉遗传转化的外植体也发展到多种,有原生质体,胚性细胞悬浮系,分生组织,以及横切薄片等。近几年,随着分子生物学的发展,出现了转化效率更高,重复性更好的香蕉遗传转化技术。如农杆菌和基因枪结合法,离心辅助农杆菌介导法、真空渗透技术等。这些新技术新方法的出现,必将推动香蕉产业高速发展。 相似文献
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Automobile comfort dynamic simulation is necessary when we predict and evaluate the comfort of a automobile or optimize performance of automobile. The nine DOF vibration model of automobile is established , which acts root mean square value of body in multiple work conditions as comfort evaluation indices. Based on the comfort simulation, the Hongyan 1160 is predicted in the way of comfort. The programmes can be used in many different automobiles . The computational result indicates that the model can simulate vibration of automobile truly. It is significant to research automobile comfort evaluation to optimize performance of automobile and comfort simulation .The computational program can be applied to optimize or simulate which has some reference value. 相似文献
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南瓜降糖功能及其系列食品加工技术 总被引:3,自引:0,他引:3
阐述了南瓜在糖尿病辅助治疗方面的功能特性,介绍了南瓜降糖主要制品南瓜全粉、南瓜脆片、南瓜果酱和南瓜肉汁的工艺流程和操作要点。 相似文献
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母猪繁殖障碍成因分析 总被引:3,自引:0,他引:3
繁殖障碍是导致母猪淘汰的最主要因素,直接造成母猪非生产天数延长,繁殖猪群生产效率降低,严重影响猪场的经济效益。本文作者对引起母猪繁殖障碍的多方面因素,包括营养因素(如饲养水平、饲料品质、断奶日龄)、环境因素(如温度、湿度、通风、光照)、疫病因素、生产技术及管理因素进行了详细阐述。 相似文献
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Applicability of molecular markers in the context of protection of new varieties of cucumber 总被引:2,自引:0,他引:2
G. P. Bernet S. Bramardi D. Calvache E. A. Carbonell M. J. Asins 《Plant Breeding》2003,122(2):146-152
The growing number of candidate varieties presented every year at each national Plant Variety Protection Office and their decreasing genetic variability forces strategies to be adopted that will reduce costs without losing rigour when deciding about the acceptance or rejection of a candidate variety. Molecular markers have been envisaged as a reliable tool to establish differences, but can molecular markers be used for assessing distinctness? A comparison between a molecular and a morphological characterization of 41 seed samples belonging to 36 cucumber varieties and including several external controls has been carried out to investigate the applicability of molecular markers in the context of distinctness, uniformity and stability (DUS) tests and the protection of new varieties. Both types of character indicate the same relationships among main groups, Dutch and Beth‐Alpha types, and Gerking and Slice types, the correlation between distance matrices being only 0.6489. Varieties considered uniform for morphological traits proved not to be so for molecular markers. Therefore, molecular characterization is not offering the same estimates of uniformity and relatedness between varieties as does morphological characterization. External controls were used to establish distinction limits with morphological and molecular dendrograms to focus on those varieties, which were suspiciously similar. The results with cucumber show that molecular identity could be used to assess any lack of distinctness and so corroborate the morphological assessment of candidate varieties. The morphological trait ‘type’ provides distinct characterization of varieties and the molecular characterization of candidate varieties could be used to design better field experiments to assess distinction within each group of morphological cucumber type. 相似文献