大麦新品种蒙啤麦6号的选育及栽培技术

蒙啤麦6号(原代号11PJ-005)为内蒙古自治区农牧业科学院作物育种与栽培研究所通过杂交育种培育的新品种,2019年9月通过非主要农作物品种登记审核。经品系鉴定、品系比较、区域试验及生产示范,均表现高产、优质、酿造品质好等特点。蒙啤麦6号属春性二棱皮大麦中熟品种,生育期66~90 d,株高56.0~84.4 cm,穗长7.1~7.5 cm,主穗粒数20~24粒/穗,千粒质量40.9~54.9 g,籽粒蛋白质含量11.7%。该品种中抗条纹病、网斑病,高感根腐病,抗倒性强,适宜在内蒙古及邻近省份春季种植。     

艾比湖流域降水与径流变化特征分析

以艾比湖流域的博尔塔拉河（博河）和精河为例,基于1961-2008年的水文气象数据,运用Mann-Kendall非参数检验、线性倾向估计、小波分析等方法,分析流域内2条河流的变化趋势及周期特征,得到以下结论：（1）48年来,艾比湖流域博乐站和精河站降水量均呈现增加的趋势,其中,博乐站的线性倾向斜率为8.54mm/10年;精河站的线性倾向斜率为12.74mm/10年。（2）博河和精河年径流量均呈现极显著的增加趋势,其Z值分别为2.42和2.45,两者均通过а=0.05显著性检验。（3）艾比湖流域年降水量序列的小波系数等值线分布比较密集,存在明显的小波系数高低值中心震荡。两站年降水量在48年的时间序列中存在多个周期。（4）流域内2条河流均有明显的周期性变化,尤其以年代际周期最为显著。在每个周期中径流量又经历了几次＂丰枯＂交替。（5）博河和精河2条河流径流量与降水量的相关系数分别为0.564和0.490,均通过a=0.01的R显著性检验,表明降水是流域径流量的重要补给源之一。     

In Vitro Evaluation of Liquid‐stored Buffalo Semen at 5°C Diluted in Soya Lecithin Based Extender (Bioxcell®), Tris‐Citric Egg Yolk,Skim Milk and Egg Yolk‐Citrate Extenders

This study was designed to compare the quality of liquid‐stored buffalo bull spermatozoa in soya lecithin based extender Bioxcell^® (BIOX), milk (MILK), tris‐citric egg yolk (TEY) and egg yolk‐citrate (EYC) extender at 5°C. Semen was collected from five Nili‐Ravi buffalo (Bubalus bubalis) bulls of 6–7 years of age with artificial vagina over a period of 3 weeks (two consecutive ejaculates once in a week). Semen ejaculates having more than 60% motility were pooled, split into four aliquots, diluted (37°C; 10 × 10⁶ motile spermatozoa/ml), cooled from 37 to 5°C in 2 h (0.275°C/min) and stored for 5 days. Sperm motility, viability, plasma membrane integrity (PMI) and normal acrosomal ridge were studied at first, third and fifth day of storage. Higher values of progressive sperm motility (%), sperm viability (%), sperm PMI (%) and normal apical ridge (%) were observed in BIOX, MILK and TEY extenders at first, third and fifth day of storage than EYC extender. Progressive sperm motility, sperm viability and sperm PMI in BIOX^® extender were not different from MILK and TEY extenders at 1st and third day storage period. However, at fifth day of storage, the values for these parameters remained significantly higher (p < 0.05) in BIOX^® compared with MILK, TEY and EYC extenders. At fifth day of storage, the semen quality parameters for Bioxcell^® were comparable to those with MILK and TEY extenders at third day of storage. In conclusion, motility, viability and PMI of buffalo bull spermatozoa remained similar in Bioxcell^®, milk and TEY extender at first and third days of storage at 5°C. Yet, the values for the aforementioned parameters in Bioxcell^® were higher compared with milk, TEY and EYC extender at fifth day of storage at 5°C.     

牛环形泰勒虫病二温式PCR诊断方法的建立及初步应用

为建立特异、敏感、快速的二温式PCR诊断方法,根据牛环形泰勒虫裂殖子表面抗原(tams1)基因,设计了一对特异性引物,扩增出大小为154bp基因片段,经克隆、测序分析,与已知基因序列的相似性为96%。用建立的牛环形泰勒虫病二温式PCR诊断方法,对从新疆牛环形泰勒虫病流行地区采集的50份全血样品进行诊断,阳性率为88%,而血涂片检出的阳性率只有58%。经试验验证,该方法具有特异性高、敏感性强、重复性和稳定性好等优点。表明本试验所建立的二温式PCR诊断方法可用于牛环形泰勒虫病的临床诊断、隐性感染检测和流行病学调查。     

通辽市果树调查报告

通辽市现有果树总面积１．２４２９万ｈｍ＾２,已结果的占５５％,以苹果和梨占绝对优势。在树种和品种结构及管理上,都存在一些问题,本文对此进行阐述,提出了改进意见。     

羊踯躅嫩茎离体培养和植株再生

本研究以羊踯躅嫩茎为外植体,应用均匀设计法筛选其最适合的嫩茎基部直接再生芽苗和生根培养基.结果表明,最适合羊踯躅嫩茎基部直接再生芽苗的诱导培养基为:1/4DR+ 2ip3.75 mg/L+IAA 0.03 mg/L+KT 1.30 mg/L,诱导率为99.8％;生根培养基为:1/4DR+ZT 0.06 mg/L+ NAA 0.02 mg/L,生根率达99.0％以上.以再生植株茎节为材料进行快繁的结果表明,在28 d的培养周期内,每段增殖倍数平均达5以上.成功建立了羊踯躅的离体培养和植株再生体系,所建立的植株再生体系可以满足羊踯躅工厂化育苗的需要.     

AORTO-CARDIAC FISTULAS IN SEVEN HORSES

This report describes the history, clinical, electrocardiographic and echocardiographic findings, treatment, outcome, and post-mortem findings in seven horses with aorto-cardiac fistula. Affected horses included 5 stallions, one gelding and one mare; 2 each of the Thoroughbred, Arabian and Standardbred breeds and one Thoroughbred-cross with a mean ± s.d. age of 12 ± 4 years, range 6–18 years. The presenting sings were acute distress (four horses), exercise intolerance (two horses) and the lesion was detected during a routine examination in one horse. Five horses had monomorphic ventricular tachycardia on admission and one other had a history of this arrhythmia. Five horses had a characteristic continuous murmur loudes in the right fourth intercostal space. Echocardiography (six horuses) and/or post-mortem examination (four horses) revealed the horses had aorto-cardiac fistulas arising from the right aortic sinus in all five horses in which the site was recorded. Two horses had ruptured aneurysmall dilatations of the aortic wall at this site. Fistulas extended into the right ventricle in four horses; the right atrium in two horses, the left ventricle in one horse, and five horses had dissecting tracts in the septal myocardium. Horses survived for periods ranging from 24th to 4 years. Aorto-cardiac fistula should be considered in the differential diagnosis for horses presenting with acute distress, bounding arterial pulse, a right-sided continuous murmur and/or monomorphic ventricular tachycardia, particularly in middle-aged or older stallions. Echocardiography is the technique of choice for confirming the diagnosis and demonstrating accompanying cardiac changes.     

EFFECT OF SODIUM DIATRIZOATE ON THE IN VITRO GROWTH OF THREE COMMON CANINE URINARY BACTERIAL SPECIES

The mean concentration of diatrizoate in urine specimens of eight dogs collected 20 minutes after intravenous injection of 2.2 ml/kg of sodium and meglumine diatrizoate (iodine concentration, 288 mg/ml) was 80 mg/ml (iodine concentration, 48 mg/ml). The mean concentration plus 1 SD was 111 mg/ml (iodine concentration, 66 mg/ml), and the mean concentration plus 2 SD was 142 mg/ml (iodine concentration, 85 mg/ml). The presence of diatrizoate at a concentration of 142 mg/ml did not inhibit in vitro bacterial growth of any of ten randomly selected canine urinary isolates of Escherichia coli or any of ten randomly selected urinary isolates of Staphylococcus aureus. In vitro bacterial growth of all ten randomly selected urinary bacterial isolates of Proteus mirabilis was significantly inhibited by a diatrizoate concentration of 80 mg/ml. Bacterial growth was progressively inhibited by increased diatrizoate concentrations.     

焉耆地区几种混交林对黄斑星天牛的抗虫性研究

在新疆焉耆县的黄斑星天牛危害区域营造了4种混交试验林,以观测研究不同混交林(纯林)对黄斑星天牛的抗性。结果表明:多树种混交林比纯林对黄斑星天牛危害的抗性强;在几种混交林中新疆杨与箭杆杨混交林抗虫性较好。