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据广西农业科学网有关消息,1月13日,专家组对广西农业科学院园艺研究所和广西聚然康乐农业开发有限公司共同承担的广西重点研发项目"番荔枝优良品系‘凤梨释迦’新品种繁育与高效栽培技术研究示范"进行现场查定验收。近年来,广西开始引种凤梨释迦番荔枝,并在南宁市、崇左市、北海市和百色市等地逐步扩大生产。 相似文献
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莲雾、凤梨释迦(番荔技)、火龙果、三叶桃、茂谷柑(默科特桔橙)和软枝杨桃等40个在世界闻名的台湾名优水果。如今已全部在福建漳州引种成功,并开花结果。 相似文献
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在设施大棚内,研究不同浓度赤霉素对凤梨释迦番荔枝生长和叶绿素荧光特性的影响。结果表明,不同浓度赤霉素对凤梨释迦番荔枝枝梢生长的影响较小,对花的生长的影响较大。花的生长以8.0mg·L-1赤霉素处理的效果最好,6.0mg·L-1赤霉素处理的效果次之。赤霉素显著影响凤梨释迦番荔枝的叶绿素荧光特性,4.0mg·L-1赤霉素处理Yield和qP最高,qN和NPQ最低。叶片的光响应曲线的变化规律一致,同一光照强度下,各个处理的ETR和Yield接近,白天的ETR和Yield高于晚上,且各个处理之间的ETR和Yield差异大于晚上。在凤梨释迦番荔枝生产上,4.0~8.0mg·L-1赤霉素为比较适宜的浓度。 相似文献
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【目的】研究两个番荔枝品种的花粉特性和授粉亲和性,为番荔枝的栽培和杂交育种提供理论依据。【方法】以广西大学果树育种基地的番荔枝为试材,对非洲骄傲和凤梨释迦的花粉进行电镜扫描;自交和正反交授粉,调查坐果率、荧光显微压片观察花粉萌发及生长动态。【结果】(1)非洲骄傲和凤梨释迦的花粉均为辐射对称型,外壁均为穴状纹孔,形状较为相似;赤道面观近椭圆形,极面观近圆形。(2)两个番荔枝品种自交和杂交后花粉在柱头上都能萌发,但品种间存在萌发速度的差异。授粉后1h,花粉管都开始萌发,但数量有差异,凤梨释迦的两个组合已经大量萌发,而非洲骄傲的则在14h才大量萌发。授粉24h,四个组合花粉管均进入子房。凤梨释迦的两个组合在48h后达到胚囊。【结论】非洲骄傲和凤梨释迦两个番荔枝品种的花粉形态相似,自交和杂交均有较好的亲和性。 相似文献
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为探讨设施栽培下,福建省凤梨释迦冬果生产的最佳修剪时期,分别于2018、2019年不同时期对凤梨释迦植株进行修剪,观测、统计和调查修剪期对其开花性状及果实性状的影响。结果表明,不同修剪期之间新稍萌发差异不显著,结果枝平均花量、授粉量、座果数和座果率差异较大。始花期时长以8月1日修剪的最短,8月15日修剪的最长。修剪的果实成熟期以6月15日最短,8月15日的最长。8月修剪的单果重、果纵径、果横径、果形指数较大。6-8月为福建省凤梨释迦冬果生产的修剪期,以7月15日到8月15日之间为最佳修剪期。 相似文献
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青枣、杨桃、葡萄柚、番石榴和凤梨释迦(番荔枝)等台湾水果,在上海超市原本只是零星销售,今年上市量大增,价格明显下降。许多消费者纷纷挑选购买,有的消费者则直接从网上订购。 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2%的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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