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White, Donald G. Toman, Joseph, Jr 2011-05-07T11:59:10Z 2011-05-07T11:59:10Z 10000-01-01 1991 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). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9136751.pdf: 2477928 bytes, checksum: edf23242583d9b445d038b658b99718e (MD5) Previous issue date: 1991 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:35:09Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:13:44-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9136751 (UMI)AAI9136751 http://hdl.handle.net/2142/19173 eng Copyright 1991 Toman, Joseph, Jr Agriculture, Agronomy Agriculture, Plant Pathology Inheritance of resistance to anthracnose stalk rot of corn text Crop Sciences Plant Pathology University of Illinois at Urbana-Champaign Dissertation Ph.D.