黄花美冠兰的核型分析     

邓小果  莫饶  罗远华  林木龙 《福建林业科技》2009,36(4)

采用压片法研究黄花美冠兰[Eulophia flava(Lindley)Hpoker f.]的染色体数目和核型。结果表明:黄花美冠兰的染色体数目2 n=54,染色体基数为X=27,核型公式为2 n=2 x=54=28 m+18 sm+8 st。主要由中部和近中部着丝点染色体组成。核型分类为2B型。  相似文献   

烤烟气候性斑点病与植株和土壤的营养关系     

杨绍聪  张艳军  吕艳玲  段永华  张军云  费勇  饶敏  廖凯 《勤云标准版测试》2009,29(14)

针对在玉溪市烤烟生产上常发生的烤烟气候性斑点病问题,采用田间调查、采集配对样品与室内检测分析相结合的方法,以根际土壤及植株各部位叶片等为探索对象,从病害在田间分布及叶片养分变化等方面开展了研究.结果表明,在烤烟初花期气候性斑点病发生叶位以第4～7叶位(由下至上)的叶片发生较多(占83.5%);发生气候性斑点病的烟株,内因是由于植株N、Ca、Mg含量过高而K含量不足,从而提高了N/K、Mg、/K及Ca/K比值,导致N、K、Ca、Mg营养不平衡,而外因气候条件只是一个诱发因子.其根本原因是由于土壤有效氮(特别是速效的NO3与NH4+)及交换性Ca、Mg含量过高,有效K含量过低所致.  相似文献   

Molecular mapping of QTLs for gluten strength as measured by sedimentation volume and mixograph in durum wheat (Triticum turgidum L. ssp durum)     

R.M. Patil  M.D. Oak  S.A. Tamhankar  V.S. Rao   《Journal of Cereal Science》2009,49(3):378-386

Quantitative trait loci (QTLs) responsible for gluten strength measured by SDS-sedimentation volume (SV), mixograph and grain protein content (GPC) were located on the molecular linkage map of a durum wheat recombinant inbred line population. QSv.macs-1B.1 flanked by Xgwm550–Glu-B3 was the most consistent QTL for SV identified in all the environments. The same QTL was also associated with mixograph peak energy, peak time and total energy. The Glu-B1 locus was at the center of another QTL responsible for SV, while, Glu-B2 influenced SV as well as mixograph peak energy and peak time. Apart from glutenin coding loci, QTLs influencing mixing parameters and GPC were located in three other marker intervals Xwmc48.2–Xpsp3030 (4B), Xgwm573–Xbarc231.1 (7A) and Xgwm46–Xgwm540.1 (7B). A total of 26 main effect QTLs and 10 digenic epistatic interactions (QQ) for quality traits were distributed over 11 chromosomes. Out of these, seven main effect QTLs and three QQ interactions were involved in interactions with environments (QE, QQE). The results indicated that along with chromosome 1B, chromosomes 4B, 7A and 7B are also important for improvement of gluten strength and GPC in durum wheat.  相似文献   

高校产业发展与科技创新   总被引：2，自引：0，他引：2  

饶旻 《中国农学通报》2009,25(1):268-271

以高校产业发展为背景,探讨了我国高校产业发展的现状及其制约因素,提出科技创新是高校产业发展的基础、保证和动力,其中最主要的是体制创新、管理创新、机制创新和产学研有机结合。  相似文献   

4种鳗鲡同工酶的比较研究     

罗土炎  饶小珍  林岗  饶秋华  黄敏敏  龚晖 《福建农业学报》2009,24(5):421-428

以日本鳗鲡（Anguilla japonica）、澳洲鳗鲡（A．australis）、欧洲鳗鲡（A．anguilla）和美洲鳗鲡（A．rostrata）成体为试验材料,应用垂直聚丙烯酰胺凝胶电泳方法,对4种鳗鲡的眼球、肌肉、肝脏、心脏和。肾脏5种组织的8种同工酶（酯酶EST、乳酸脱氢酶LDH、苹果酸脱氢酶MDH、葡萄糖脱氢酶GCDH、葡萄糖-6-磷酸脱氢酶G6PD、醇脱氢酶ADH、超氧化物歧化酶SOD和谷氨酸脱氢酶GDH）进行比较研究。结果表明：GDH在5种组织中均没有表达,7种同工酶（EST、LDH、MDH、GCDH、G6PD、ADH、SOD）在4种鳗鲡均表现出很强的组织特异性。4种鳗鲡的同工酶谱表型非常相似,在同一组织中同工酶的存在位点、表达形态、活性等方面是类似的,但也表现出一定的种间差异性。应用酶谱差异指数D对4种鳗鲡进行聚类分析,结果提示日本鳗鲡和澳洲鳗鲡有较近的亲缘关系、而欧洲鳗鲡和美洲鳗鲡有较近的亲缘关系,这与4种鳗鲡的形态特征和生物学特征相吻合。  相似文献   

景宁木兰濒危原因初探   总被引：2，自引：0，他引：2  

刘饶  徐端妙  潘智慧  刘日林  严锋 《河北农业科学》2009,13(6):31-32

调查了景宁木兰的种群数量、开花物候、花部性状、花粉流及授粉方式,总结了景宁木兰的花期和花器官构造等特征,分析了景宁木兰濒危的原因,并提出采取人工授粉等措施,以提高景宁木兰的结果率.  相似文献   

文心兰品种变异RAPD分子检测技术的建立及应用   总被引：2，自引：0，他引：2  

罗远华  莫饶  蔡林宏  邓小果  李江渝  黄明忠 《热带农业科学》2009,29(7):28-31,42

通过对DNA提取方法的改良,随机引物的选择、RAPD反应条件的筛选,建立文心兰品种变异RAPD分子标记检测技术。利用该技术对3个母本园品种和1个试管苗品种进行RAPD检测,结果是品种“黄金2号”和“黄金3号”未发现变异;7个引物对品种“新奇士”共扩增出63条清晰带,3个样品带型发生变化,样品变异率为10％;14个引物对“黄金2号”试管苗共扩增出119条清晰带,9个样品带型发生变化,样品变异率为9．4％。结果表明,该技术能有效用于文心兰品种的变异检测。  相似文献   

优质、高产杂交稻新组合泸优5648特征特性及栽培技术     

饶溶晖 《福建稻麦科技》2006,24(2):38-39

泸优5648系福建省南平市农科所用泸香90A与自选恢复系南恢5648配组选育而成的优质、高产的杂交稻新组合,具有广泛的推广潜力和应用价值.该组合2003年参加品比试验和多点试种,同年在福建省第二届优质稻品种(组合)招标评选中中标;2004年参加福建省中稻优质组区试,表现突出,2005年续试与生产试验同步进行,2006年通过福建省农作物品种审定委员会审定(闽审稻2006015).  相似文献   

Chilled Storage of Pangasianodon hypophthalmus Fillets Coated with Plant Oil Incorporated Alginate Gels: Effect of Clove Leaf,Clove Bud,Rosemary and Thyme Oils     

B. Madhusudana Rao  D. Jesmi  P. Viji 《Journal Of Aquatic Food Product Technology》2017,26(6):744-755

Essential oil incorporated alginate coating provides a novel way to improve the safety and shelf life of pangasius (Pangasianodon hypophthalmus) fillet. Oils from the leaves and buds of clove, flowering tops of rosemary, and dried seeds of thyme were incorporated separately in alginate coating. All the plant oils showed antibacterial activity, but the zone of inhibition was relatively larger for thyme oil. Alginate coating was performed using sodium alginate (1.5%), glycerol (10%), and calcium chloride (2%) and plant oil at 1% (v/v). The coated fillets were stored under chilled conditions and samples were analyzed for bacteriological, chemical, sensory, color, and texture parameters. Psychrotrophic counts crossed 7 log cfu/g by the 13^th day and 15^th day of chilled storage in control and plant oil treated fillets, respectively. The peroxide value of treated fillets was relatively low. Texture profile analysis indicated that plant oil incorporated alginate coating reduced the rate of loss of texture (softening) during chilled storage. Plant essential oil incorporated alginate gels were relatively better compared to control fillets in preserving pangasius fillet quality during chilled storage, and incorporation of thyme oil was relatively better compared to clove leaf oil, clove bud oil, and rosemary oils.  相似文献   

Effect of Curculigo orchioides rhizomes on sexual behaviour of male rats   总被引：1，自引：0，他引：1  

Chauhan NS  Rao ChV  Dixit VK 《Fitoterapia》2007,78(7-8):530-534

The rhizomes of Curculigo orchioides have been traditionally used as aphrodisiac. In the present study ethanolic extract of rhizomes was evaluated for its effect on sexual behavior in rats. Administration of 100 mg/kg of extract change significantly the sexual behavior as assessed by determining parameters such as penile erection, mating performance, mount frequency and mount latency. Moreover a pronounced anabolic and spermatogenic effect was evidenced by weight gains of reproductive organs. The treatment also markedly affected sexual behavior of animals as reflected in reduction of mount latency, an increase in mount frequency and enhanced attractability towards female. Penile erection index was also incremented in treated group.  相似文献