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对珍汕97A(野败质)、7627A(滇一质)为母本,粳型广亲和品种热研1号为父本,采用选株连续回交,结合不育性的选择,育成了不育度高,不育性较为稳定,开花习性良好,农艺性状基本一致,且分别带有野败质和滇一质的粳型广亲和不育系热研1号A(野)和热研1号A(滇)。通过该两份不育系与不同类型的籼型材料(非恢复系、恢复系、广亲和恢复系)的测配,发现籼型广亲和恢复系对其育性恢复度较高,而籼型强恢复系对其仅表 相似文献
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以珍汕97A(野败质)为母本,粳型广亲和品种02428、热研1号为父本,采用成对连续回交,结合不育性的选择,育成了不育度高,不育性较为稳定,农艺性状一致,带有野败质的粳型广亲和不育系02428A和热研1号A.将它们与不同类型的籼型材料(普通籼型品种、恢复系、广亲和恢复系)的测配,可见02428A/籼配组F1平均表现穗大粒多而穗数较少;热研1号A/籼配组F1综合农艺性状良好.进一步分析参试籼型父本对该两个广亲和不育系的育性恢复度,发现恢复系密阳46、IR26(强恢珍汕97A)对其仅表现部分恢复.要使该类配组方式籼粳杂种F1结实率正常,父本仍宜选用广亲和恢复系. 相似文献
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4种常见的不同质源籼型不育系与7份粳型(偏粳型)广亲和或广亲和恢复系间的不完全双列杂交试验表明,三系法籼粳杂种F1的平均株高,单株穗数,抽穗天数,剑叶长及主要穗总粒数等均存较高的对照优势,协青早A和珍汕97A参与籼粳配组,其杂种在综合性状上通常较D297A和II-32A所配杂种要优越;选用感光性弱和配合力强的广谱型广亲和恢复系(如H64)进行籼粳配组,其杂种可以克服植株超高,生育期超长,结实率偏低 相似文献
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以珍汕97A(野败质)为母本,粳型广亲和品种02428、热研1号为父本,采用成对连续回交,结合不育性的选择,育成了不育度高,不育性较为稳定,农艺性状一致,带有野败质的粳型广亲和不育系02428A和热研1号A。将它们与不同类型的灿型材料(普通灿型品种、恢复系、广亲和恢复系)的测配,可见02428A/灿配组F1平均表现穗大粒多而穗数较少;热研1号A/灿配组F1综合农艺性状良好。进一步分析参试灿型父本对该两个广亲和不育系的育性恢复度,发现恢复系密阳46、IR26(强恢珍汕97A)对其仅表现部分恢复。要使该类配组方式灿粳杂种F1结实率正常父本仍宜选用广亲和恢复系。 相似文献
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汕优广12汕优广12是广西农学院水稻研究室用野败型珍汕97A 为母本,广12为父本配组而成的杂交组合。广12是从IR8//日本粳/台湾籼/IR24//IR1317杂交后代的第34株系选育而成,属籼粳交后代。该组合株型紧凑,根系发达,茎杆粗壮,株高110厘米左右。主茎叶片数15~16张,叶片厚,开张角度小,整个 相似文献
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利用同质恢材料,选择具有广亲和基因的粳稻品种02428与之杂交,采用系谱法进行连续多代选择正常结实株,育成了偏籼型的广亲和同质恢复系T136、T137等。通过对当选材料的亲缘关系分析,利用籼型同质恢复材料(系)与粳型广亲和系杂交,可以将广亲和基因与恢复基因聚合于一体,从而选育出广杂和恢复系,为三系法籼粳亚种杂种优势利用探索出新的途径。 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