東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Beyond biotypes: Aphis glycines (Hem...

Varenhorst, Adam Jerry.

FindBook

Google Book

Amazon

博客來

Beyond biotypes: Aphis glycines (Hemiptera: Aphididae) biology and the durability of aphid-resistant soybean.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Beyond biotypes: Aphis glycines (Hemiptera: Aphididae) biology and the durability of aphid-resistant soybean./
作者:	Varenhorst, Adam Jerry.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
面頁冊數:	147 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
Contained By:	Dissertation Abstracts International76-11B(E).
標題:	Entomology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3711937
ISBN:	9781321884296

Beyond biotypes: Aphis glycines (Hemiptera: Aphididae) biology and the durability of aphid-resistant soybean.
Varenhorst, Adam Jerry.

Beyond biotypes: Aphis glycines (Hemiptera: Aphididae) biology and the durability of aphid-resistant soybean. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 147 p.

Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.

Thesis (Ph.D.)--Iowa State University, 2015.

In North America, Aphis glycines, is capable of reducing soybean yields by as much as 40%. The management of A. glycines has relied heavily on the use of broad-spectrum insecticides that can be detrimental to both the pest and natural enemies that are present in soybean at the time of application. An alternative management strategy for A. glycines is the use of aphid-resistant soybean that contain Rag genes. The presence of three virulent A. glycines biotypes (i.e., able to overcome aphid-resistance genes) in the US however raises the question about the durability and practicality of Rag genes. Here I examined the potential interactions that may be occurring between both virulent and avirulent A. glycines on soybean, and whether fitness costs exist for virulent biotypes. I also evaluated whether the use of an interspersed refuge strategy for resistant and susceptible soybean would manage A. glycines populations, and determined their impact on natural enemies present in soybean. Our results demonstrate that a virulent A. glycines biotype is capable of obviating the resistance gene in soybean; therefore, making the plant a suitable host for both an avirulent and virulent biotype. This effect occurs in the absence of the virulent biotype for up to a period of five days. Fitness costs were present for all virulent biotypes that have been discovered. An interspersed refuge strategy reduces A. glycines populations, and has minimal impacts on natural enemies present in soybean. Future research will need to investigate the mechanism responsible for the obviation of resistance effect. Work should also be conducted to determine the durability of Rag genes when a refuge in a bag approach is used.

ISBN: 9781321884296Subjects--Topical Terms:

615844
Entomology.

Beyond biotypes: Aphis glycines (Hemiptera: Aphididae) biology and the durability of aphid-resistant soybean.
LDR:02679nmm a2200301 4500 001 2121109
005 20170724102948.5
008 180830s2015 ||||||||||||||||| ||eng d
020 $a 9781321884296
035 $a (MiAaPQ)AAI3711937
035 $a AAI3711937
040 $a MiAaPQ $c MiAaPQ
100 1 $a Varenhorst, Adam Jerry. $3 3283103
245 1 0 $a Beyond biotypes: Aphis glycines (Hemiptera: Aphididae) biology and the durability of aphid-resistant soybean.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2015
300 $a 147 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
500 $a Adviser: Matthew E. O'Neal.
502 $a Thesis (Ph.D.)--Iowa State University, 2015.
520 $a In North America, Aphis glycines, is capable of reducing soybean yields by as much as 40%. The management of A. glycines has relied heavily on the use of broad-spectrum insecticides that can be detrimental to both the pest and natural enemies that are present in soybean at the time of application. An alternative management strategy for A. glycines is the use of aphid-resistant soybean that contain Rag genes. The presence of three virulent A. glycines biotypes (i.e., able to overcome aphid-resistance genes) in the US however raises the question about the durability and practicality of Rag genes. Here I examined the potential interactions that may be occurring between both virulent and avirulent A. glycines on soybean, and whether fitness costs exist for virulent biotypes. I also evaluated whether the use of an interspersed refuge strategy for resistant and susceptible soybean would manage A. glycines populations, and determined their impact on natural enemies present in soybean. Our results demonstrate that a virulent A. glycines biotype is capable of obviating the resistance gene in soybean; therefore, making the plant a suitable host for both an avirulent and virulent biotype. This effect occurs in the absence of the virulent biotype for up to a period of five days. Fitness costs were present for all virulent biotypes that have been discovered. An interspersed refuge strategy reduces A. glycines populations, and has minimal impacts on natural enemies present in soybean. Future research will need to investigate the mechanism responsible for the obviation of resistance effect. Work should also be conducted to determine the durability of Rag genes when a refuge in a bag approach is used.
590 $a School code: 0097.
650 4 $a Entomology. $3 615844
650 4 $a Agriculture. $3 518588
650 4 $a Ecology. $3 516476
690 $a 0353
690 $a 0473
690 $a 0329
710 2 $a Iowa State University. $b Entomology. $3 1669158
773 0 $t Dissertation Abstracts International $g 76-11B(E).
790 $a 0097
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3711937