scholarly journals Response of maize inbred lines to two European corn borer (Ostrinia nubilalis) strains in Canada

2005 ◽  
Vol 72 (2) ◽  
pp. 69-76
Author(s):  
M. Hudon ◽  
R.E. Pitblado ◽  
R.I. Hamilton ◽  
G. Bourgeois ◽  
S. Kuzir ◽  
...  
Keyword(s):  
Plant Height ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Genetic Resistance ◽  
Inbred Lines ◽  
Height Ratio ◽  
Corn Borer ◽  
Maize Germplasm ◽  
Maize Inbred Lines ◽  
Total Plant

In 1986 and 1987, six maize inbred lines (CM47, A619, F2, CM107, CM7, and A654) were evaluated at four locations across Ontario and Quebec for their resistance to artificially infested univoltine and lst generation bivoltine strains of the European corn borer, Ostrinia nubilalis. Three criteria were used: leaf feeding, total plant damage at harvest and length of tunnels/plant height ratio. Substantial interactions in borer damage measurements were observed between locations and years, but inbred reaction was relatively consistent. For all criteria, the univoltine strain often caused significantly more damage than the bivoltine borer. In general, A619 had the greatest resistance-tolerance with good standability until harvest. Wherever possible, evaluation of genetic resistance in maize germplasm should be conducted using the univoltine borer strain.

INFLUENCE OF RESISTANT AND SUSCEPTIBLE MAIZE INBRED LINES ON THE BIOLOGY OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), AFTER NATURAL OVERWINTERING CONDITIONS IN SOUTHWESTERN QUEBEC

1977 ◽  
Vol 109 (7) ◽  
pp. 931-942 ◽  
Author(s):  
M. Hudon ◽  
M. S. Chiang
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Inbred Lines ◽  
Corn Borer ◽  
Additional Information ◽  
Maize Inbred Lines ◽  
Pupal Parasitism ◽  
Lepidoptera Pyralidae ◽  
Biological Characters ◽  
Insect Resistant

AbstractForty exotic maize inbred lines from 10 countries with known resistance or susceptibility to the European corn borer, Ostrinia nubilalis (Hübner), were used to study the effect of plant resistance on borer survival from natural overwintering conditions and particularly the fecundity of the female moth during the following summer. Also, additional information was obtained on different biological characters of the insect. Resistant and susceptible lines were grouped according to their leaf feeding ratings (antibiosis), per cent borer survival at pollination time or at harvest (tolerance). Each specimen observed was kept on the same plant tissue until pupation. The number of eggs and egg masses/female was significantly higher only when lines are grouped according to their leaf feeding ratings. No significant differences were obtained in most biological characters of borers fed on resistant or susceptible maize lines: spring pupation, pupal parasitism, mortality and weight, moth emergence and sex ratio.

scholarly journals Yield reductions in grain maize associated with the presence of European corn borer and Gibberella stalk rot in Québec

2005 ◽  
Vol 73 (3) ◽  
pp. 101-110 ◽  
Author(s):  
M. Hudon ◽  
G. Bourgeois ◽  
G. Boivin ◽  
D. Chez
Keyword(s):  
European Corn Borer ◽  
Gibberella Zeae ◽  
Height Ratio ◽  
Tunnel Length ◽  
Corn Borer ◽  
Stalk Rot ◽  
Plant Damage ◽  
Lepidoptera Pyralidae ◽  
Total Plant ◽  
The Impact

The impact of European corn borer (Ostrinia nubilalis) [Lepidoptera: Pyralidae] infestation and stalk rot infection caused by Gibberella zeae on yield of eight grain maize (Zea mays) inbreds, two commercial and six experimental hybrids was evaluated from 1975 to 1980. Three criteria were used: leaf feeding, total plant damage at harvest and tunnel length/plant height ratio. For most criteria, the cultivars were significantly different and the artificial European corn borer infestation had an effect almost every year. Although G. zeae can have a signifiant effect on plant damage at harvest and yield of grain maize, no consistent link was found between stalk rot and European corn borer.

THE SEVERITY OF STALK ROT OF GRAIN CORN IN RELATION TO INFESTATIONS OF A BIVOLTINE STRAIN OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE)

1983 ◽  
Vol 115 (9) ◽  
pp. 1235-1237
Author(s):  
W. H. Foott ◽  
P. R. Timmins
Keyword(s):  
Zea Mays ◽  
Fusarium Graminearum ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Direct Relationship ◽  
Inbred Lines ◽  
Gibberella Zeae ◽  
Corn Borer ◽  
Stalk Rot ◽  
Lepidoptera Pyralidae

Corn lodging due to bent or broken stalks results mostly from feeding by the European corn borer, Ostrinia nubilalis (Hübner), and from stalk rot infections. Stalk rot of corn (Zea mays L.) is caused in southwestern Ontario mainly by Gibberella zeae (Schw.) Petch (Fusarium graminearum Schwabe), which attacks roots during the summer and invades the bases of the stems as the plants mature (Gates and Mortimore 1972). Several studies in the U.S.A. reported an association between the rot and the borer. Christensen and Schneider (1950) recorded severest stalk rot with highest borer infestation and found that inbred lines usually free from rot became susceptible when infested by the borer. Chiang and Wilcoxson (1961) reported a higher incidence of rot in plants artificially inoculated with Fusarium graminearum and borer larvae than in those inoculated with F. graminearum alone. A recent study in Iowa (Jarvis et al. 1982) showed that the greatest stalk rot damage occurred in high borer infestations. Carson and Hooker (1981), however, were unable to relate the incidence and severity of rot to corn borer infestation. In their 3-year study, the least rot occurred in the year of severest borer infestation. Since observations in corn fields in southwestern Ontario also indicated that there might not be a direct relationship between severity of stalk rot and severity of corn borer infestation, further studies were undertaken.

Adaptation of maize lines and hybrids to abiotic/biotic stresses

2006 ◽  
Vol 54 (4) ◽  
pp. 397-403 ◽  
Author(s):  
P. Pepó ◽  
Z. Bódi
Keyword(s):  
European Corn Borer ◽  
Resistant Cell ◽  
Inbred Lines ◽  
Selective Medium ◽  
Western Corn Rootworm ◽  
Natural Conditions ◽  
Corn Borer ◽  
Biotic Stresses ◽  
Maize Inbred Lines ◽  
Tolerant Line

The resistance of maize inbred lines and their hybrids to Western Corn Rootworm was investigated in a 4 × 4 full diallel system. The most tolerant line against WCR larvae was the inbred line P26. Four maize inbred lines and their 12 normal and reciprocal crosses were investigated for resistance to Fusarium ssp. and European Corn Borer under natural conditions in four replications in 1998-2000. The highest GCA values were found for the inbred lines P26 and P50. Studies were also made to determine the optimum concentration of imidazolinone in the selective medium for the detection of resistant cell lines originating from homozygous genotypes produced by irradiation.

Dynamics of Nosema pyrausta in natural populations of the European corn borer, Ostrinia nubilalis: A six-year study

BioControl ◽  
2006 ◽  
Vol 51 (5) ◽  
pp. 627-642 ◽  
Author(s):  
Leslie C. Lewis ◽  
Douglas V. Sumerford ◽  
Lori A. Bing ◽  
Robert D. Gunnarson
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Natural Populations ◽  
Corn Borer
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