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为探究植物生长调节剂对苦瓜种子萌芽及幼苗生长的影响,用不同浓度的赤霉素(GA3),2,4-D,6-BA浸种处理苦瓜种子,观察种子萌发及幼苗生长,测定发芽率、发芽势、发芽指数及苗高.结果表明,不同药剂浸种对苦瓜种子的萌发及苗势均有影响.赤霉素浸种对苦瓜种子萌芽及苗势促进效果显著,其中以300 mg/L的赤霉素最佳;低浓度的6-BA和适当浓度的2,4-D对苦瓜种子的萌芽及幼苗生长有促进作用,高浓度均表现抑制效果. 相似文献
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赤霉素对法国薰衣草种子发芽及幼苗生长的影响 总被引:6,自引:1,他引:5
研究了赤霉素不同浓度及不同浸种时间对法国薰衣草种子发芽和幼苗生长的影响.结果表明,适当赤霉素处理,能缩短发芽时间,提高种子发芽率、发芽指数、活力指数,能明显促进幼苗的生长,其中以300mg/L浸种6 h效果最好. 相似文献
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不同药剂处理对石栗种子发芽率及苗木质量的影响 总被引:2,自引:0,他引:2
在恒温条件下(24。C),利用一定浓度的赤霉素、硝酸钾、GGR、ABT1对石栗干种进行浸种催芽播种在沙床上,以干种直接播种的为对照,研究了不同药剂处理对石栗发芽率及幼苗地径、根系生长、生物量分配以及生理质量指标的影响。结果表明:以200mg/L赤霉素溶液浸泡时间为24h的种子,其发芽率最高,可达到54%;其次为2000mg/L的硝酸钾溶液浸泡时间为24h的种子,发芽率达到32%,与对照相比,都达显著差异。根据生长指标和生理指标测定出用100mg/L的GGR6#溶液浸泡24小时的种子生长的幼苗苗木质量较好,其次200mg/L的赤霉素溶液浸泡24h的处理;苗木质量最差的是用2000mg/L的硝酸钾溶液浸泡24h的处理。 相似文献
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探讨了4种药剂浸种处理对烟草种子活力及幼苗生长的影响.以云烟203和MS云烟85种子为材料,研究不同浓度油菜素内酯(BR)、赤霉素(GA)、水杨酸(SA)和氯化钙(CaCl2)浸种处理后对发芽、幼苗生长以及保护酶活性与丙二醛(MDA)含量的影响.结果表明,四种药剂最佳的浸种浓度分别为1.0 mg/L BR,50 mg/L GA,120 mg/L SA,10 mg/LCaCl2,均显著提高了烟草种子的发芽势、发芽率与发芽指数,降低平均发芽时间和MDA含量.以1.0 mg/L BR和50mg/L GA浸种对促进种子萌发和幼苗生长效果最为明显. 相似文献
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植物生长调节剂对藿香种子发芽及幼苗生长的影响 总被引:1,自引:0,他引:1
本文分析了不同浓度的赤霉素(GA3)、6-苄氨基嘌呤(6-BA)及激动素(Kinetin)对藿香种子发芽与幼苗生长的影响.结果表明:适宜浓度的GA3和6-BA均可提高藿香种子的发芽率、促进幼苗的早期生长;浓度为300 mg/L的GA3的处理效果最佳,能显著地提高发芽率及促进幼苗生长,但是最终发芽率不到50%,因此,需要探索更有效的打破藿香种子休眠和提高发芽率的方法. 相似文献
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低温及赤霉素处理丝棉木种子对其发芽力的影响 总被引:1,自引:0,他引:1
以丝棉木种子为材料,采用不同浓度赤霉素处理,结合低温层积,对丝棉木种子发芽进行试验研究.结果表明:赤霉素处理能极显著提高丝棉木种子发芽率、发芽势和发芽指数.经过低温处理30 d的丝棉木种子,播种前用赤霉素浓度150mg/L浸泡24 h可有效提高种子的发芽力;未经低温处理的丝棉木种子,播种前用赤霉素浓度3 000 mg/L浸泡24 h,可有效提高种子的发芽力,从而取代低温层积处理的过程. 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