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13篇 您的检索式:作者名="Robert Conner"
    题名 作者 年代 出处 被引量
1The Stripe Rust Resistance Gene Yr10 Encodes an Evolutionary-Conserved and Unique CC-NBS-LRR Sequence in Wheat显示文摘对用一条基于地图的克隆途径从摩洛人小麦(Triticum aestivum L.) 孤立的条纹锈的第一棵幼苗或所有阶段抵抗(R) R 基因作为 Yr10 被识别。这基因的克隆 4B 编码一高度,进化保存和唯一的 CCNBSLRR 定序。克隆 4E, Yr10 的一个相当或相同的事物,而是缺乏的抄写开始地点(TSS ) 和通常认为的 TATA 盒子和 CAAT 盒子,是可能的非表示的 pseudogene。克隆 4B 和 4E 是 84% 在 intron 和 LRR 领域相同、分叉。基因 silencing 和 transgenesis 与无毒害、剧毒的条纹锈尽力表明 Yr10 功能的差别与接种一起被使用。Yr10 CCNBSLRR 顺序在在小麦的已知的 CCNBSLRR R 基因之中是唯一的,但是高度保存相当或相同的事物(E = 0.0 ) 包括 Hordeum vulgare 和 Brachypodium distachyon 在 Aegilops tauschii 和另外的 monocots 被识别。相关序列也在玉米的 genomic 数据库被识别,米饭,并且在里面蜀黍。这是在有在它的本国的主人的有限相同,但是与在为条纹锈是主人或非主人的相关 monocots 的众多的相应 R 基因的植物的 CCNBSLRR 抵抗基因的第一份报告。这些结果越过种类代表基因进化和分散的一个唯一的例子。Wei Liu Michele Frick Rene Huel Cory L. Nykiforuk Xiaomin Wang Denis A. Gaudet Francois Eudes Robert L. Conner Alan Kuzyk Zhensheng Kang Andre Laroche 2014Molecular Plant2014,7,12:21
2硬粒小麦品种Waskana和Waskowa对禾谷孢囊线虫(Heterodera filipjevi和H.avenae)的抗性显示文摘禾谷孢囊线虫(cereal cyst nematode,CCN)是一类重要的土传小麦病原线虫,危害我国小麦的主要是燕麦孢囊线虫(Heterodera avenae)和菲利普孢囊线虫(H.filipjevi)。我国对这些病原线虫的抗性资源十分缺乏,寻找新抗源是当前抗性育种的重要工作。本研究通过3年的田间病圃和温室接种鉴定,发现加拿大的硬粒小麦品种Waskana和Waskowa对H.filipjevi(河南许昌群体,Hfc-1致病型)和H.avenae(河南荥阳群体,Ha43致病型)都表现很强的抗性,单株孢囊数显著少于感病的普通小麦品种矮抗58、石4185和温麦19。显微观察可见,虽然2种线虫的幼虫都能够侵入Waskana和Waskowa的根组织内,但是根内的线虫数量显著少于感病对照普通小麦品种,最终在根系上形成的可见孢囊数量也较少。Waskana和Waskowa对2种病原线虫的抗性为我国抗CCN小麦品种选育提供了有较高利用价值的新抗源。根据南澳大利亚研究所的土传病害检测服务系统对土壤中病原线虫的分子检测结果,抗CCN品种Waskana和Waskowa根际土壤中的线虫虫卵量低于感病小麦品种,因此种植后可能降低土壤中禾谷孢囊线虫危害的风险。高秀 崔磊 李洪连 王晓鸣 唐文华 Robert L. CONNER 林小虎 李洪杰 2012作物学报2012,38,4:7
3Quasistatic and dynamic deformation of tungsten reinforced Zr 57 Nb 5 Al 10 Cu 15.4 Ni 12.6 bulk metallic glass matrix composites显示文摘Haein Choi-Yim Robert D Conner Frigyes Szuecs William L Johnson 2001Scripta Materialia2001,,9:1
4Morphological characterization of fungi associated with the ascochyta blight complex and pathogenic variability of Mycosphaerella pinodes on field pea crops in central Alberta显示文摘Field pea crops in central Alberta were surveyed for ascochyta blight from 2011 to 2012 and fungal isolates were recovered from foliar lesions on selected plants. Cultural and microscopic characterization of the 275 isolates obtained revealed that 272 were of Mycosphaerella pinodes and three were of Phoma medicaginis var. pinodella. Ascochyta pisi or Phoma koolunga were not identified. Isolates of M. pinodes were divided into two groups,GI and GII, based on visual assessment of culture characteristics. GI isolates(light to dark, mostly gray colony color; pycnidial distribution radial and concentric; conidia10.5–14.5 × 4.2–6.2 μm most with one septum, occasionally two, constricted at the septum;spore mass light buff to flesh color) were predominant(83%), while GII isolates(dark to gray colony color; pycnidia abundant; conidia 8–16 × 3.5–6.2 μm most with 1 septum, constricted at the septum; spore mass light buff to flesh color) were less common(17%). The cultures of GII isolates were similar to recent descriptions of A. pisi, but they differed in spore color. In a host differential study, 13 pathotypes of M. pinodes were identified from 110 single-spore isolates. Pathotype I was predominant(88 isolates) and virulent on all nine differential genotypes. The other pathotypes(pathotypes II–XIII) were rare(1–6 isolates of each).Comparison of the present results with earlier studies suggests that pathotype I has been prevalent for many years, and that its aggressiveness on the host differentials has increased over time. Emphasis should be placed on breeding for resistance to M. pinodes in field pea cultivars intended for deployment in central Alberta.Hafiz Ahmed Kan-Fa Chang Sheau-Fang Hwang Heting Fu Qixing Zhou Stephen Strelkov Robert Conner Bruce Gossen 2015The Crop Journal2015,3,1:1
5A comparison of animal color measurements using a commercially available digital color sensor and photograph analysis显示文摘An animal's pelage,feather,or skin color can serve a variety of functions,so it is important to have multiple standardized methods for measuring color.One of the most common and reliable methods for measuring animal coloration is the use of standardized digital photographs of animals.New tech no logy in the form of a commercially available handheld digital color sensor could provide an alter native to photography-based animal color measurements.To determine whether a digital color sensor could be used to measure animal coloration,we tested the ability of a digital color sensor to measure coloration of mammalian,avian,and lepidopteran museums specimens.We compared results from the sensor to measurements taken using traditional photography methods.Our study yielded significant differences between photography-based and digital color sensor measurements of brightness(light to dark)and colors along the green to red spectrum.There was no difference between photographs and the digital color sensor measurements for colors along the blue to yellow spectrum.The average difference in recorded color(AE)by the 2 methods was above the threshold at which humans can perceive a difference.There were sign讦icant correlations between the sensor and photographs for all measurements indicating that the sensor is an effective animal coloration measuring tool.However,the sensor's small aperture and narrow light spectrum range designed for human-vision limit its value for ecological research.We discuss the conditions in which a digital color sensor can be an effective tool for measuring animal coloration in both laboratory settings and in the field.Alex D.Potash Daniel U.Greene Gabrielle A.Foursa Verity L.Mathis L.Mike Conner Robert A.McCleery 2020Current Zoology2020,66,6:1
6Aphanomyces euteiches: A Threat to Canadian Field Pea Production显示文摘豌豆(Pisum sativum var. arvense L.)是世界上重要的豆科作物。豌豆籽粒蛋白质含量很高,并能提高土壤中有效氮的含量。由一种土传卵菌根腐丝囊霉(Aphanomyces euteiches Drechs.)引起的Aphanomyces根腐病(ARR),在包括加拿大在内的许多地区对豌豆生产构成严重威胁,在潮湿的土壤条件下引起严重的根损伤、萎蔫,造成大幅度减产。在有利于病害发生的条件下,由于病原体卵孢子的寿命长,在豌豆任何生长阶段都可以侵染豌豆植株,传统病害防控措施(如作物轮作和拌种处理)不能完全防治病害的危害。培育部分抗病或耐病豌豆品种可能是分析豌豆中根腐丝囊霉变异性和生理转化性、提高病害防治效果的有效途径。因此,检测抗病数量性状基因座(QTL)对豌豆育种计划至关重要。本文对根腐丝囊霉的致病特点、ARR防控措施以及部分与抗性相关的QTL进行了综述。Longfei Wu Kan-Fa Chang Robert L. Conner Stephen Strelkov Rudolph Fredua-Agyeman Sheau-Fang Hwang David Feindel 2018Engineering2018,4,4:1
7Microwave radiation * s influence on sorption and competitive sorption in zeolites显示文摘Turner D Michael Laurence L Robert Conner W Curtis 2000AICHE Journal2000,46,4:1
8Scfipta Materialia显示文摘Choi-Yim Haein Conner Robert D Szuecs Frigyes 200145:10392001,45,:1
9Diffusion of cyclohexane and alkylcyclohexanes in silicalite-1 显示文摘Magalhaes Fernao D Laurence Robert L Conner Curtis W 1998J Phys Chem1998,102,13:1
10Microwave radiation * s influence on sorption and competitive sorption in zeolites显示文摘Turner D Michael Laurence L Robert Conner W Curtis 2000AICHE Journal2000,46,4:1
11Adult bobcat(Lynx rufus)habitat selection in a longleaf pine savanna显示文摘Background:Pine savannas are primarily managed with frequent prescribed fire(≤3 years)to promote diversity of flora and fauna,and to maintain open,park-like conditions needed by species such as the endangered red-cockaded woodpecker(Picoides borealis).However,a knowledge gap exists in our understanding of bobcat(Lynx rufus)habitat selection in longleaf pine savannas and research is warranted to direct our future management decisions.Methods:We examined bobcat habitat selection in a pine savanna managed with frequent fires at two spatial scales(i.e.,study area boundary[hereafter,landscape scale])and annual area of use[95%kernel density;local scale],and assessed effects of prescribed fire on bobcat habitat selection.Specifically,we monitored 45 bobcats(16 males and 29 females)during 2001–2007.Results:We found differential habitat selection by sex.At the landscape scale,female bobcats were closer to mixed pine-hardwoods,young pine,and secondary roads,but farther from mature pine and hardwoods stands relative to males.We found no difference in selection of agriculture,shrub-scrub,and primary roads between sexes.At the annual area of use scale,female bobcats were closer to secondary roads,but farther from agriculture and shrub-scrub relative to males.We found no difference in selection of mature pine,mixed pine-hardwoods,hardwoods,young pine,and primary roads between sexes.Bobcats primarily selected for stands burned≤1.1 years post-fire.Conclusions:Our results show that bobcats exploit a broad range of habitat types in pine landscapes managed with frequent fire and commonly use recently burned stands(≤1.1 year post-fire),suggesting prey in many areas of this system are at risk of bobcat predation.Additionally,we suggest land managers consider scale of selection by bobcats when developing habitat management strategies.Andrew R.Little L.Mike Conner Michael J.Chamberlain Nathan P.Nibbelink Robert J.Warren 2018Ecological Processes2018,7,1:0
12Eastern wild turkey nest site selection in two frequently burned pine savannas显示文摘Introduction:Reproductive success is a critical factor affecting avian demographics and can be influenced by many factors including nesting chronology,predation risk,and fine-scale nest site selection.Methods:We modeled the relative influences of habitat-related covariates at six spatial scales(nest site:15-,40-,80-,120-,160-,and 200-m radii)on Eastern wild turkey(Meleagris gallopavo silvestris)nest site selection in two pine savannas managed by frequent prescribed fire(≤3 years)in southwestern Georgia during 2011-2013.Results:Nest site(15-m scale)habitat metrics(mean visual obstruction[cm]and canopy closure[%])had the greatest influence on nest site selection relative to covariates measured at larger spatial scales.Scaled odds ratios suggested that nests were 26.8% more likely to occur for every 10 cm increase in mean vegetation height with a range of 7.5 to 150.0 cm and 18.5% less likely to occur for every 10% increase in canopy closure with a range from 0.0 to 97.8%.Total ground cover,canopy closure,edge density,and percent land cover type(e.g.,mature pine,mixed pine/hardwood,shrub/scrub)had minimal influence on nest site selection.Conclusions:Management of pine savannas for turkey nest sites should focus on creating early-successional vegetation to conceal nests from potential predators.Additionally,we suggest that future studies consider evaluating the influence of spatial scale on turkey nest site selection.Andrew R.Little Nathan P.Nibbelink Michael J.Chamberlain LMike Conner Robert J.Warren 2016Ecological Processes2016,5,1:0
13Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches显示文摘Aphanomyces root rot(ARR) of field pea(Pisum sativum), caused by Aphanomyces euteiches, can cause severe root damage, wilting, and large yield losses under wet soil conditions. To identify ways to manage this disease, the effect of A. euteiches inoculum density on field pea was studied under greenhouse and field conditions in 2015 and 2016. Increases in inoculum density reduced seedling emergence, root nodulation, and plant vigor, and resulted in increased root rot severity in both field and greenhouse tests. Seed treatments with the fungicides Apron Advance(thiabendazole + fludioxonil + metalaxyl) + Vibrance(difenoconazole + metalaxylM + sedaxane), INTEGO Solo(ethaboxam), BAS 516F(boscalid + pyraclostrobin), BAS 720F(metalaxyl + pyraclostrobin + fluxapyroxad), and BAS 516F + BAS 720F(3:1) were evaluated for their efficacy against ARR. All seed treatments except Apron Advance + Vibrance reduced root rot severity under controlled conditions. BAS 516F, BAS 720F and INTEGO Solo improved plant vigor and all treatments reduced seedling blight to varying degrees under greenhouse conditions, but not in the field. A collection of 22 pea genotypes was evaluated for resistance to root rot in field plot experiments. Line 00–2067 showed the least severe root rot symptoms,whereas ‘Spring D' showed the lowest reduction in yield. The results suggest that there may be an opportunity to combine partial host resistance and fungicidal seed treatments to adequately manage ARR of field pea.Longfei Wu Kan-Fa Chang Sheau-Fang Hwang Robert Conner Rudolph Fredua-Agyeman David Feindel Stephen E.Strelkov 2019The Crop Journal2019,7,1:0
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