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为解决大百合种子胚后熟引起的休眠问题,以云南哀牢山自然保护区大百合种子为试验材料,采用不同激素结合变温层积处理的方法对大百合种子进行研究。结果表明,在大百合种子变温层积90天后加入6-BA 50 mg/L浸泡24 h 能促进胚生长,胚率为45.873%(层积120 天后)、萌发率45.33%(从第1粒种子萌发开始30天后统计萌发率),发芽时间较空白对照提前6天,同样层积条件下加入6-BA 20 mg/L的胚率为23.008%,萌发率为30.33%,加入SNP 13.9 mg/L 的胚率为27.163%,萌发率为31.33%;空白对照胚率为16.741%,萌发率为26.67%。综合胚率、萌发率和发芽时间筛选出层积90 天后加入6-BA50 mg/L浸泡24 h有利于大百合种子胚后熟并促进种子萌发。 相似文献
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花生种子包衣技术推广应用的效果 总被引:1,自引:0,他引:1
种子包衣是种子加工珠采化和发展,种子通过丸衣化:(1)可防止病虫危害,提高出苗率,促进幼苗健壮生长;(2)促进花生生长发育,增产效果显著;(3)省种省工,增加收入,利于良种产业化发展。 相似文献
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肉苁蓉种子休眠与萌发特性的初步研究 总被引:10,自引:2,他引:10
为深入了解肉苁蓉(Cistanche deserticola)的寄生生长特性,对其种子的休眠及萌发特性进行了研究。采用整体透明法观察了种胚的发育情况;TTC法测定了种子活力;物理方法(水泡、变温、层积等)和化学方法(激素、独脚金酚化学合成类似物GR24、中草药、白刺根、寄主梭梭根的浸提液等)分别对种子进行萌发诱导处理,观察促进萌发情况。结果表明,肉苁蓉种子较小,千粒重仅为0.096g,成熟的种子胚发育不完全,萌发前后始终处于球形胚阶段。具有活力的种子占25.3%。采用室温水处理30d,并以GA3(0.5μg/ml)培养种子,在恒温25℃条件下,萌发率最高,可这16.7%。部分中草药、白刺根的浸提液对肉苁蓉种子萌发有一定的促进作用,但GR24、寄主梭梭根浸提液对肉苁蓉种子萌发没有促进作用。试验结果证实,肉苁蓉种子存在休眠现象,种子萌发的启动,除了需要有较长时间的后熟过程,必须有来自寄主根系的某种萌发刺激信号。肉苁蓉种子的休眠及萌发特性和非寄生植物及一些寄生植物有很大不同。 相似文献
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花生种子高倍繁殖技术山东省菜西市望城中心种子站(266601)孙旭亮花生生产用种量大,种子繁殖系数低。为了加快花生良种的推广进程,我站于1992~1995年进行了高倍繁殖试验。试验表明,采用此项技术,花生每公顷用种量较常规播种节省90~112千克,平... 相似文献
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万寿菊水培营养液的调试 总被引:8,自引:0,他引:8
在万寿菊水培过程中,变化(NH4)2SO4,Ca(NO3)2和啤酒的含量对水培营养液进行调试,配制了六种不同配方的营养液进行大(小)花万寿菊的水培试验,研究了(NH4)2SO4,Ca(NO3)2和啤酒的含量对大(小)花万寿菊水培的影响。结果表明,含有0.23g/L(NH4)2SO4,1.68g/LCa(NO3)2和14ml啤酒的营养液配方5最有利于大(小)花万寿菊的生长。 相似文献
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种子包衣是种子加工珠采化和发展,种子通过丸衣化:(1)可防止病虫危害,提高出苗率,促进幼苗健壮生长;(2)促进花生生长发育,增产效果显著;(3)省种省工,增加收入,利于良种产业化发展。 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
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