Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum

Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum (http://www.molecularstation.com/forum/)
-   ميدان فارسى. Persian Molecular Biology (http://www.molecularstation.com/forum/persian-molecular-biology/)
-   -   سلام.میشه fulltext این مقاله رو برام پیدا کنین (http://www.molecularstation.com/forum/persian-molecular-biology/47963-fulltext.html)

mahsaasghari 01-01-2009 08:28 AM

سلام.میشه fulltext این مقاله رو برام پیدا کنین
 
RAPD analysis of genetic variation among propanil-resistant and -susceptible Echinochloa crus-galli populations in Arkansas
Authors: Rutledge, Jeff, Talbert, Ronald E., Sneller, Clay H.
Article ID:10.1043/0043-1745(2000)048<0669:RAOGVA>2.0.CO;2

Journal: Weed Science Issn: 0043-1745 Volume: 48 Issue: 6 Pages: 669-674

The full abstract of this article is available for free:

Abstract

Abstract: The extensive use of propanil for weed control in Oryza sativa over the past 30 yr has led to the development of propanil-resistant Echinochloa crus-galli. This problem was first identified in one Arkansas county in 1990. Since that time, 171 resistant populations have been identified in 20 counties. Random amplified polymorphic DNA (RAPD) analysis was used to assess genetic variation among populations of propanil-resistant and -susceptible E. crus-galli in Arkansas and to elucidate the origin of resistance and its dispersal. Sixteen E. crus-galli populations from seven Arkansas counties and one population from Mississippi were analyzed using 13 primers, which amplified a total of 159 repeatable fragments. Genetic distance was calculated among the populations, and the populations were clustered. The analysis revealed two distinct clusters with an average between-cluster genetic distance of 0.436 and average within-cluster distances of 0.012 and 0.029. These clusters may represent different Echinochloa species. Each cluster contained at least one resistant population and populations from different regions of the state. In addition, several resistant populations from different regions of the state were genetically nearly identical. Thus, it is likely that resistant biotypes have spread in Arkansas by seed dispersal and by independent mutation events. This suggests that there are multiple origins of the resistance, and simple control of weed seed dispersal will not stop the spread of resistance.

Nomenclature: Propanil; Echinochloa crus-galli (L.) Beauv. ECHCG, barnyardgrass; Oryza sativa L., rice.

mostafaxp 01-24-2010 03:12 PM

Re: سلام.میشه fulltext این مقاله رو برام پیدا کنین
 
یادم بنداز برات پیدا می کنم
[Only registered and activated users can see links. Click Here To Register...]


All times are GMT. The time now is 07:27 AM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 - 2012 Molecular Station | All Rights Reserved

Page generated in 0.09266 seconds with 11 queries