Biological Observations on the European Corn Borer in Southeastern Missouri1

Jackson, Robert D.; Peters, Don C.

doi:10.1093/jee/56.6.741

Cited by 3 publications

(3 citation statements)

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“…The problem of correlating levels of infestation with yield reduction on a single stalk basis has also been recognized by other authors (Jackson and Peters, 1963;Harris, 1962). A slightly positive relationship appears to exist between borer infestation and yield, which can be explained by the fact that the borers selected taller plants, which are high-yielding.…”

Section: Discussionmentioning

confidence: 86%

Intensity levels of stem-borers in maize and sorghum and the effect on yield under different intercropping patterns

Ogwaro

1983

Int. J. Trop. Insect Sci.

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At harvest taller plants of both sorghum and maize produced a greater grain yield, but under intercropping conditions maize always out-yielded sorghum when planted at the same time, whether the sorghum was planted in the same hill as maize, or in alternate hills, or in alternate rows. There were generally more stem-borers in sorghum than in maize, with Chilo partellus predominating. Intercropping increased the level of stem-borers in maize, while infestation was very low in pure stands of maize, and the level of borer infestation in sorghum remained the same. Borers had a considerable effect on yield of maize at Mbita Point, on the shores of Lake Victoria: an infestation level of 38-52% of internodes bored resulted in significant yield loss. Implications of these results for predicting yield reduction due to stem-borers is discussed.

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Section: Discussionmentioning

confidence: 86%

Intensity levels of stem-borers in maize and sorghum and the effect on yield under different intercropping patterns

Ogwaro

1983

Int. J. Trop. Insect Sci.

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“…Infestation at the earhead stage in terms of peduncle tunnelling did not express grain yield loss in CSH 1 . The correlative levels of infestation with yield reduction on a single stalk basis (Harris, 1962;Jackson and Peters, 1963) and a slight decrease in grains per panicle and 100 seed weight from the infested plants between second to seventh week after germination have been recognized (Alghali, 1986). Starks and Doggett (1970) observed that hybrids showed less suppression of yield in the presence of borer.…”

Section: Selection For Resistancementioning

confidence: 99%

Varietal resistance in sorghum to spotted stem borer, Chilo partellus (Swinhoe)

Singh

Rana

1989

Int. J. Trop. Insect Sci.

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The spotted stem borer, Chilo partellus (Swinhoe) is an economically important pest in many sorghum growing areas of Asia and Africa. A chronological progress made in Indian and other programmes on natural and artificial screening techniques is reviewed. Numerous germplasm accessions were evaluated and resistant sources identified and documented for various parameters of resistance such as foliar damage, "dead hearts" and stem tunnelling.Studies on the mechanisms of resistance showed predominance of tolerance, variable degrees of antibiosis and antixenosis as only a factor for oviposition. The morphological characters and biochemical factors associated with resistance are discussed. The nature of resistance is polygenic and partially dominant over susceptibility. The inheritance patterns of resistance to foliar damage and/or "dead hearts", and stem (stalk and peduncle) tunnelling damage are different and independent. Pedigree breeding with single and multiple crosses has been useful to transfer resistance in more economic background. Continuous screening for stem tunnelling over several generations improves the level of resistance. Recurrent selection was suggested alternatively with and without infestation for resistance and yield, respectively to increase the level of tolerance. The resistant sources utilized in developing commercially released high yielding varieties, hybrids and derivatives with low to moderate levels of resistance are listed. Efforts to develop cultivars with levels of resistance higher than presently grown cultivars and combining cross resistance to stem borers and shootfly are under way. Current progress has been reviewed and future strategies are suggested. Resume-Le rongeur de tige, Chilo partellus (Swinhoe) est un ravageur d'importance economique dans plusieurs regions d'Asie et Afrique, la ou le sorgho est cultive. L'article fait de point, selon 1'ordre chronologique, sur les progres recapitulation dans de Inde et diverse programes due en natural et en artificielles d'elevage techniques de criblage. Nombreux germplasm entree ont evaluate, nombre sources et stability de resistance sont identifie due quant au degats des feuilles, "dead hearts" et un creusement de tiges est documents. B. U. SINGH and B. S. RANA Etude sur la mlcanismes de resistance deplete predominance du tolerance, variable degree due antibiose et factlur pour la oviposition du antixenosis. Les traits morphologique et biocbimique factlurs associate avlc la resistance est discute's. La nature de resistance deplete polygenic et resistance etait dominante vis a vis la susceptibilite. La patterns de resistance quant au degats de feuilles, "dead hearts" et un creusement (stalk et peduncle) des tiges sont difference et independament he'rite's. Pedigre systeme du selection in singulier et multiple aux crosses est suggfre. Une selection continue pour le creusement des tiges pendant plusiers generations peut ameiiorer la resistance. Une selection frequente est sugge>e pour ameiiorer le niveau de resistance ou tolerance au tongeur...

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“…Another important feature of Table 2 is that Gainesville triops is neither entirely univoltine nor entirely bivoltine but is both. Jackson and Peters (1963) refer to this condition as heterovoltine.…”

Section: Somementioning

confidence: 99%

Geographic variation and dimorphisms in song, development, and color in a katydid; field and laboratory studies (Tettigoniidae, Orthoptera) / by James Judd Whitesell.

Whitesell¹

1974

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Biological Observations on the European Corn Borer in Southeastern Missouri1

Cited by 3 publications

References 0 publications

Intensity levels of stem-borers in maize and sorghum and the effect on yield under different intercropping patterns

Intensity levels of stem-borers in maize and sorghum and the effect on yield under different intercropping patterns

Varietal resistance in sorghum to spotted stem borer, Chilo partellus (Swinhoe)

Geographic variation and dimorphisms in song, development, and color in a katydid; field and laboratory studies (Tettigoniidae, Orthoptera) / by James Judd Whitesell.

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