{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/19173"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/19173","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Inheritance of resistance to anthracnose stalk rot of corn","abstract":"Inheritance of resistance to anthracnose stalk rot (ASR) of corn (Zea mays L.), caused by Colletotrichum graminicola was studied in eight crosses involving two resistant inbred lines DW1035 ((MP305 x FRB73$\\sp{\\lbrack 5\\rbrack }$)$\\sb{\\rm S8}$) and DW890 ((MP305 x FRB73$\\sp{\\lbrack 5\\rbrack }$)$\\sb{\\rm S8}$), and four susceptible inbred lines FRB73, B84, FRMo17, and C103. In 1987, the crosses consisted of the parental lines, F$\\sb1$, F$\\sb2$, and both backcross generations. In 1988 and 1989 the study included F$\\sb3$ and backcross selfed lines. Individual observed stalk rot reactions within a particular generation were classified as resistant or susceptible by discriminant analysis. Expected stalk rot distributions were determined using a partitioning method for a single, dominant gene hypothesis. The observed distributions were compared for goodness-of-fit to the expected distributions using a chi-square test for homogeneity. Support exists with the FRB73 x DW1035 and B84 x DW890 crosses for a single, dominant gene for ASR resistance, but environmental stresses in 1988 and 1989 significantly hindered the ability to obtain conclusive evidence, especially in the B84 x DW1035 population. The data also suggest differences between the resistant inbred lines DW1035 and DW890. Use of FRMo17 and C103 as susceptible parents to interpret the inheritance of a stalk rot with DW1035 and DW890 were complicated by the inability to distinguish the resistant and susceptible parents as two distinct classes.","abstract_html":"Inheritance of resistance to anthracnose stalk rot (ASR) of corn (Zea mays L.), caused by Colletotrichum graminicola was studied in eight crosses involving two resistant inbred lines DW1035 ((MP305 x FRB73$\\sp{\\lbrack 5\\rbrack }$)$\\sb{\\rm S8}$) and DW890 ((MP305 x FRB73$\\sp{\\lbrack 5\\rbrack }$)$\\sb{\\rm S8}$), and four susceptible inbred lines FRB73, B84, FRMo17, and C103. In 1987, the crosses consisted of the parental lines, F$\\sb1$, F$\\sb2$, and both backcross generations. In 1988 and 1989 the study included F$\\sb3$ and backcross selfed lines. Individual observed stalk rot reactions within a particular generation were classified as resistant or susceptible by discriminant analysis. Expected stalk rot distributions were determined using a partitioning method for a single, dominant gene hypothesis. The observed distributions were compared for goodness-of-fit to the expected distributions using a chi-square test for homogeneity. Support exists with the FRB73 x DW1035 and B84 x DW890 crosses for a single, dominant gene for ASR resistance, but environmental stresses in 1988 and 1989 significantly hindered the ability to obtain conclusive evidence, especially in the B84 x DW1035 population. The data also suggest differences between the resistant inbred lines DW1035 and DW890. Use of FRMo17 and C103 as susceptible parents to interpret the inheritance of a stalk rot with DW1035 and DW890 were complicated by the inability to distinguish the resistant and susceptible parents as two distinct classes.","abstract_has_math":true,"creators":["Toman, Joseph, Jr"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Plant Pathology","degree_department":null,"school":null,"contributors":["White, Donald G."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T11:59:10Z","date_published":"2011-05-07T11:59:10Z","updated_at":"2026-07-22T22:25:12Z","subjects":["Agriculture, Agronomy","Agriculture, Plant Pathology"],"languages":["eng"],"rights":["Copyright 1991 Toman, Joseph, Jr"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9136751","(UMI)AAI9136751"],"render_values":[{"text":"AAI9136751","href":null,"code":true},{"text":"(UMI)AAI9136751","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/19173","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["White, Donald G."]},{"key":"dc:creator","label":"Author","values":["Toman, Joseph, Jr"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T11:59:10Z","10000-01-01","1991"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Plant Pathology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Agriculture, Agronomy","Agriculture, Plant Pathology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1991 Toman, Joseph, Jr"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9136751","(UMI)AAI9136751","http://hdl.handle.net/2142/19173"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Inheritance of resistance to anthracnose stalk rot (ASR) of corn (Zea mays L.), caused by Colletotrichum graminicola was studied in eight crosses involving two resistant inbred lines DW1035 ((MP305 x FRB73$\\sp{\\lbrack 5\\rbrack }$)$\\sb{\\rm S8}$) and DW890 ((MP305 x FRB73$\\sp{\\lbrack 5\\rbrack }$)$\\sb{\\rm S8}$), and four susceptible inbred lines FRB73, B84, FRMo17, and C103. In 1987, the crosses consisted of the parental lines, F$\\sb1$, F$\\sb2$, and both backcross generations. In 1988 and 1989 the study included F$\\sb3$ and backcross selfed lines. Individual observed stalk rot reactions within a particular generation were classified as resistant or susceptible by discriminant analysis. Expected stalk rot distributions were determined using a partitioning method for a single, dominant gene hypothesis. The observed distributions were compared for goodness-of-fit to the expected distributions using a chi-square test for homogeneity. Support exists with the FRB73 x DW1035 and B84 x DW890 crosses for a single, dominant gene for ASR resistance, but environmental stresses in 1988 and 1989 significantly hindered the ability to obtain conclusive evidence, especially in the B84 x DW1035 population. The data also suggest differences between the resistant inbred lines DW1035 and DW890. Use of FRMo17 and C103 as susceptible parents to interpret the inheritance of a stalk rot with DW1035 and DW890 were complicated by the inability to distinguish the resistant and susceptible parents as two distinct classes.","Made available in DSpace on 2011-05-07T11:59:10Z (GMT). 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In 1987, the crosses consisted of the parental lines, F$\\sb1$, F$\\sb2$, and both backcross generations. In 1988 and 1989 the study included F$\\sb3$ and backcross selfed lines. Individual observed stalk rot reactions within a particular generation were classified as resistant or susceptible by discriminant analysis. Expected stalk rot distributions were determined using a partitioning method for a single, dominant gene hypothesis. The observed distributions were compared for goodness-of-fit to the expected distributions using a chi-square test for homogeneity. Support exists with the FRB73 x DW1035 and B84 x DW890 crosses for a single, dominant gene for ASR resistance, but environmental stresses in 1988 and 1989 significantly hindered the ability to obtain conclusive evidence, especially in the B84 x DW1035 population. The data also suggest differences between the resistant inbred lines DW1035 and DW890. Use of FRMo17 and C103 as susceptible parents to interpret the inheritance of a stalk rot with DW1035 and DW890 were complicated by the inability to distinguish the resistant and susceptible parents as two distinct classes.","Made available in DSpace on 2011-05-07T11:59:10Z (GMT). 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