Overview of the Turf Weed Control Market in the USA     

Peter Porpiglia  Owen Towne  Doug Houseworth 《Pest management science》1996,47(4):387-388

  相似文献   

Plant regeneration from anther culture in Canadian cultivars of flax (Linum usitatissimum L.)   总被引：1，自引：0，他引：1  

Yurong Chen  Edward O. Kenaschuk  J. Doug Procunier 《Euphytica》1998,102(2):183-189

The effect of culture of anthers at 35 °C for one to four days prior to culture at 25 °C in darkness, genotype, anther orientation on callus induction and shoot regeneration in anther culture of flax was investigated. The influence of type and concentrations of cytokinins in the regeneration medium on shoot regeneration was also investigated. The results suggested that culture of anthers at 35 °C prior to continuous culture at 25 °C in darkness did not significantly improve the percentage of anthers producing calli. However, culture of anthers at 35 °C for one day significantly increased the overall efficiency of regeneration compared to no culture temperature treatment. Genotypic effects were significant for the percentage of anthers producing calli and the overall efficiency of regeneration. Anther orientation showed no significant differences. The regeneration medium containing 4.5 μM zeatin had significantly higher percentage of calli forming shoots than the same basal medium containing 0.01 μM TDZ. The importance of these findings for flax breeding was discussed. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Errata     

Kell Kristiansen  Lars P. Christensen  Yurong Chen  Edward O. Kenaschuk  J. Doug Procunier 《Euphytica》1998,104(2):141-142

  相似文献   

Open Access Publishing          下载免费PDF全文

Doug Hare 《The Canadian veterinary journal. La revue veterinaire canadienne》2007,48(6):565-568

  相似文献   

Who did what          下载免费PDF全文

Doug Hare 《The Canadian veterinary journal. La revue veterinaire canadienne》2006,47(10):955-956

  相似文献   

饲料的粉碎(续)     

Doug Reuscher 《饲料研究》2010,(8)

<正>2.3基本工作原理在锤片式粉碎机内部,高速转动的锤片与运动速度相对较低的原料发生碰撞,就会使原料破碎,从而减小原料的粒度。随后,被加速的原料便会朝向筛片的方向运动。由于粉碎颗粒或运动角度的不  相似文献   

Xylem and soil CO2 fluxes in a Quercus pyrenaica Willd. coppice: root respiration increases with clonal size     

Roberto Salomón  María Valbuena-Carabaña  Jesús Rodríguez-Calcerrada  Doug Aubrey  MaryAnne McGuire  Robert Teskey  Luis Gil  Inés González-Doncel 《Annals of Forest Science》2015,72(8):1065-1078

  相似文献   

The Influence of Biochar on Growth of Lettuce and Potato     

Kalika P Upadhyay  Doug George  Roger S Swift  Victor Galea 《中国农业科学(英文版)》2014,(3):541-546

Pot experiments were conducted in a glasshouse to determine the growth pattern of lettuce, true potato seedlings （TPS） and single node cuttings of TPS in response to biochar. The treatments were arranged in a randomized complete block design with 5 treatments （0, 10, 30, 50 and 100 t ha^-1） ofbiochar from greenwaste with 5 replications in lettuce, 10 in TPS and 5 in single node cuttings of TPS. The observations recorded on growth parameters showed that biochar had significant effect on growth of lettuce but no consistent effect on growth of TPS and single node cuttings. Among the biochar rates, 30 t ha^-1 had the greatest influence on overall growth of lettuce. The pH and electrical conductivity increased as the biochar rates increased in all experiments. These results provide an avenue for soil management system by using biochar as an amendment in horticultural crops. However, their verification in the field is important for specific recommendations.  相似文献   

Genomic sequencing of Pleistocene cave bears     

Noonan JP  Hofreiter M  Smith D  Priest JR  Rohland N  Rabeder G  Krause J  Detter JC  Pääbo S  Rubin EM 《Science (New York, N.Y.)》2005,309(5734):597-599

Despite the greater information content of genomic DNA, ancient DNA studies have largely been limited to the amplification of mitochondrial sequences. Here we describe metagenomic libraries constructed with unamplified DNA extracted from skeletal remains of two 40,000-year-old extinct cave bears. Analysis of approximately 1 megabase of sequence from each library showed that despite significant microbial contamination, 5.8 and 1.1% of clones contained cave bear inserts, yielding 26,861 base pairs of cave bear genome sequence. Comparison of cave bear and modern bear sequences revealed the evolutionary relationship of these lineages. The metagenomic approach used here establishes the feasibility of ancient DNA genome sequencing programs.  相似文献   

A comprehensive survey of the Plasmodium life cycle by genomic, transcriptomic, and proteomic analyses     

Hall N  Karras M  Raine JD  Carlton JM  Kooij TW  Berriman M  Florens L  Janssen CS  Pain A  Christophides GK  James K  Rutherford K  Harris B  Harris D  Churcher C  Quail MA  Ormond D  Doggett J  Trueman HE  Mendoza J  Bidwell SL  Rajandream MA  Carucci DJ  Yates JR  Kafatos FC  Janse CJ  Barrell B  Turner CM  Waters AP  Sinden RE 《Science (New York, N.Y.)》2005,307(5706):82-86

  相似文献