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

Pathogenic characterization, distrib...

Engle, Jessica S.

FindBook

Google Book

Amazon

博客來

Pathogenic characterization, distribution in Ohio and wheat genotype reactions to Stagonospora nodorum and Pyrenophora tritici-repentis.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Pathogenic characterization, distribution in Ohio and wheat genotype reactions to Stagonospora nodorum and Pyrenophora tritici-repentis./
作者:	Engle, Jessica S.
面頁冊數:	216 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2355.
Contained By:	Dissertation Abstracts International66-05B.
標題:	Agriculture, Plant Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3176430
ISBN:	9780542159695

Pathogenic characterization, distribution in Ohio and wheat genotype reactions to Stagonospora nodorum and Pyrenophora tritici-repentis.
Engle, Jessica S.

Pathogenic characterization, distribution in Ohio and wheat genotype reactions to Stagonospora nodorum and Pyrenophora tritici-repentis. - 216 p.

Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2355.

Thesis (Ph.D.)--The Ohio State University, 2005.

Two fungal pathogens, Stagonospora nodorum and Pyrenophora tritici-repentis infect wheat leaves, the spike and impact seed quality. Both fungi produce host specific phytotoxins that elicit distinct lesion types. The distribution and pathogenic characterization of these pathogens was determined in seven wheat growing regions of Ohio. Both pathogens were recovered from wheat flag leaves from all seven regions, but S. nodorum was most prevalent. There was an association between S. nodorum isolate aggressiveness and region of the state. Isolates from North Eastern Ohio were less aggressive than those from the remaining 6 regions, while isolates from Central North West Ohio were more aggressive. P. tritici-repentis exists in the U.S. as a population of races, with the most common being races 1--4. These races are characterized by the toxin(s) produced causing specific reactions on a differential set of wheat cultivars and lines. Isolates of P. tritici-repentis in Ohio were determined to be races 1, 2 and rarely race 3, representing 60%, 35% and 5% of the population, respectively. Seedling reactions of 15 wheat cultivars and one breeding line to races 1 and 2 of P. tritici-repentis indicated that some cultivars were more susceptible to race 2 than race 1. This same set of cultivars was inoculated with isolates of S. nodorum producing either predominately phytotoxins SnTox1 or SnTox2. Most genotypes were more sensitive to S. nodorum isolate producing predominately SnTox2. Spike and flag leaf reactions to S. nodorum of 13 wheat cultivars were examined in the greenhouse and field. Cultivar Coker 9663 was identified as having moderately high resistance to both leaf blotch and glume blotch. Seed harvested from field plots were examined for pathogen infestation. S. nodorum was the predominant pathogen on seed obtained from both inoculated and noninoculated field plots. P. tritici-repentis and Bipolaris sorikiniana were also present on seed from non-inoculated plots. This same set of cultivars was examined for P. tritici-repentis resistance in the greenhouse and field. The resistance levels to P. tritici-repentis of the 13 cultivars varied in the field with no significant differences detected among Cultivar reactions. Two greenhouse experiments examined the response of wheat cultivars to P. tritici-repentis on adult flag leaves. (Abstract shortened by UMI.)

ISBN: 9780542159695Subjects--Topical Terms:

1028950
Agriculture, Plant Pathology.

Pathogenic characterization, distribution in Ohio and wheat genotype reactions to Stagonospora nodorum and Pyrenophora tritici-repentis.
LDR:03347nmm 2200277 4500 001 1823490
005 20061130142502.5
008 130610s2005 eng d
020 $a 9780542159695
035 $a (UnM)AAI3176430
035 $a AAI3176430
040 $a UnM $c UnM
100 1 $a Engle, Jessica S. $3 1912595
245 1 0 $a Pathogenic characterization, distribution in Ohio and wheat genotype reactions to Stagonospora nodorum and Pyrenophora tritici-repentis.
300 $a 216 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-05, Section: B, page: 2355.
500 $a Adviser: Patrick E. Lipps.
502 $a Thesis (Ph.D.)--The Ohio State University, 2005.
520 $a Two fungal pathogens, Stagonospora nodorum and Pyrenophora tritici-repentis infect wheat leaves, the spike and impact seed quality. Both fungi produce host specific phytotoxins that elicit distinct lesion types. The distribution and pathogenic characterization of these pathogens was determined in seven wheat growing regions of Ohio. Both pathogens were recovered from wheat flag leaves from all seven regions, but S. nodorum was most prevalent. There was an association between S. nodorum isolate aggressiveness and region of the state. Isolates from North Eastern Ohio were less aggressive than those from the remaining 6 regions, while isolates from Central North West Ohio were more aggressive. P. tritici-repentis exists in the U.S. as a population of races, with the most common being races 1--4. These races are characterized by the toxin(s) produced causing specific reactions on a differential set of wheat cultivars and lines. Isolates of P. tritici-repentis in Ohio were determined to be races 1, 2 and rarely race 3, representing 60%, 35% and 5% of the population, respectively. Seedling reactions of 15 wheat cultivars and one breeding line to races 1 and 2 of P. tritici-repentis indicated that some cultivars were more susceptible to race 2 than race 1. This same set of cultivars was inoculated with isolates of S. nodorum producing either predominately phytotoxins SnTox1 or SnTox2. Most genotypes were more sensitive to S. nodorum isolate producing predominately SnTox2. Spike and flag leaf reactions to S. nodorum of 13 wheat cultivars were examined in the greenhouse and field. Cultivar Coker 9663 was identified as having moderately high resistance to both leaf blotch and glume blotch. Seed harvested from field plots were examined for pathogen infestation. S. nodorum was the predominant pathogen on seed obtained from both inoculated and noninoculated field plots. P. tritici-repentis and Bipolaris sorikiniana were also present on seed from non-inoculated plots. This same set of cultivars was examined for P. tritici-repentis resistance in the greenhouse and field. The resistance levels to P. tritici-repentis of the 13 cultivars varied in the field with no significant differences detected among Cultivar reactions. Two greenhouse experiments examined the response of wheat cultivars to P. tritici-repentis on adult flag leaves. (Abstract shortened by UMI.)
590 $a School code: 0168.
650 4 $a Agriculture, Plant Pathology. $3 1028950
650 4 $a Agriculture, Plant Culture. $3 1018669
690 $a 0480
690 $a 0479
710 2 0 $a The Ohio State University. $3 718944
773 0 $t Dissertation Abstracts International $g 66-05B.
790 1 0 $a Lipps, Patrick E., $e advisor
790 $a 0168
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3176430