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backcrossing
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Helicoverpa zea
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- Author:
- Danielly AM Rios; Alexandre Specht; Vânia F Roque‐Specht; Daniel R Sosa‐Gómez; Júlia Fochezato; Juaci V Malaquias; Gislene L Gonçalves; Gilson RP Moreira
- Source:
- Pest management science 2022 v.78 no.3 pp. 955-964
- ISSN:
- 1526-498X
- Subject:
- Helicoverpa armigera; Helicoverpa zea; backcrossing; fecundity; gene flow; heterosis; immatures; introgression; pests; sex ratio; viability
- Abstract:
- ... BACKGROUND: The invasion of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) into the New World has made it possible for this pest to hybridize with a native American species, H. zea (Boddie), under natural conditions. We investigated the viability and development of hybrids of these two Helicoverpa species. We reared the parental species and evaluated crosses between H. armigera males and H ...
- DOI:
- 10.1002/ps.6705
- https://doi.org/10.1002/ps.6705
- Author:
- Fei Yang; Graham P Head; Paula A Price; José C Santiago González; David L Kerns
- Source:
- Pest management science 2020 v.76 no.11 pp. 3676-3684
- ISSN:
- 1526-498X
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; backcrossing; corn; cotton; diet; insect resistance; leaves; loci; pest management; pests; resistance management; solubilization
- Abstract:
- ... BACKGROUND: The corn earworm, Helicoverpa zea (Boddie), is a major target pest of pyramided Bt corn and cotton in the United States. Field‐evolved practical resistance to Cry1 and Cry2 proteins in H. zea has been documented in multiple locations in the United States. Understanding the genetic basis of Bt resistance is essential in developing insect resistance management (IRM) strategies for the su ...
- DOI:
- 10.1002/ps.5916
- https://doi.org/10.1002/ps.5916
3. Effects of defoliating insect resistance QTLs and a cry1Ac transgene in soybean near-isogenic lines
- Author:
- Zhu, S.; Walker, D. R.; Boerma, H. R.; All, J. N.; Parrott, W. A.
- Source:
- Theoretical and applied genetics 2008 v.116 no.4 pp. 455-463
- ISSN:
- 0040-5752
- Subject:
- Bacillus thuringiensis; Glycine max; Helicoverpa zea; Pseudoplusia includens; antibiosis; antixenosis; backcrossing; cages; crops; crystal proteins; defoliation; genetic background; insects; isogenic lines; leaves; pest management; pest resistance; quantitative trait loci; soybeans; transgenes; transgenic plants; weight loss
- Abstract:
- ... The crystal proteins coded by transgenes from Bacillus thuringiensis (Bt) have shown considerable value in providing effective insect resistance in a number of crop species, including soybean, Glycine max (L.) Merr. Additional sources of soybean insect resistance would be desirable to manage the development of tolerance/resistance to crystal proteins by defoliating insects and to sustain the deplo ...
- DOI:
- 10.1007/s00122-007-0682-2
- PubMed:
- 18064435
- https://doi.org/10.1007/s00122-007-0682-2
- Author:
- N. W. Widstrom; M. E. Snook
- Source:
- Crop science 1998 v.38 no.2 pp. 372-375
- ISSN:
- 0011-183X
- Subject:
- Helicoverpa zea; agricultural programs and projects; inheritance (genetics); pest resistance; backcrossing; genetic resistance; recurrent selection; phenolic compounds; germplasm; maternal effect; Zea mays; genotype-environment interaction; inbred lines; larvae; plant breeding; genetic variation; general combining ability; chemical constituents of plants; population; specific combining ability
- Abstract:
- ... The isolation and identification of maysin and two of its analogues, 3′-methoxymaysin and apimaysin (3′M+A), in the silks of corn, Zea mays L., has given plant breeders a new tool for reducing damage by larvae of the corn earworm, Helicoverpa zea (Boddie). This study was initiated to examine the inheritance of these compounds so that a logical course for developing germplasm with high concentratio ...
- DOI:
- 10.2135/cropsci1998.0011183X003800020017x
- https://doi.org/10.2135/cropsci1998.0011183X003800020017x
- Author:
- J. B. Hartman; D. A. St. Clair
- Source:
- Crop science 1998 v.38 no.6 pp. 1501-1508
- ISSN:
- 0011-183X
- Subject:
- Solanum pennellii var. pennellii; Solanum lycopersicum var. lycopersicum; Spodoptera exigua; Helicoverpa zea; Macrosiphum euphorbiae; pest resistance; agronomic traits; inbred lines; genetic variation; genetic resistance; cultivars; bioassays; ova; genotype-environment interaction; genetic improvement; gene interaction; crop yield; introgression; backcrossing; selfing; population; California
- Abstract:
- ... Insect resistant accessions of wild Lycopersicon species were identified long ago, yet insect resistance has not been successfully introgressed into tomato cultivars. The effectiveness of the inbred backcross method for introgressing resistance to beet armyworm (Spodoptera exigua Hübner), tomato fruitworm (Helicoverpa zea Boddie), and potato aphid (Macrosiphum euphorbiae Thomas) from the resistant ...
- DOI:
- 10.2135/cropsci1998.0011183X003800060016x
- https://doi.org/10.2135/cropsci1998.0011183X003800060016x
- Author:
- Laster, M.L.; Sheng, C.F.
- Source:
- Journal of economic entomology 1995 v.88 no.5 pp. 1288-1291
- ISSN:
- 0022-0493
- Subject:
- Helicoverpa zea; backcrossing; oviposition; fecundity; Helicoverpa armigera; interspecific hybridization; biological development; Mississippi; China
- Abstract:
- ... Interspecific crosses between Helicoverpa armigera (Hubner) from China and H. zea (Boddie) were evaluated for sterility. Reciprocal crosses through 2 inbred generations and backcrosses through 4 generations were evaluated. Although few matings were obtained for some crosses, all crosses mated and produced offspring. Sterility was not detected in any cross. ...
- DOI:
- 10.1093/jee/88.5.1288
- https://doi.org/10.1093/jee/88.5.1288
- Author:
- Kennedy, G.G.; Farrar, R.R. Jr.; Barbour, J.D.
- Source:
- Entomologia experimentalis et applicata 1994 v.71 no.3 pp. 211-226
- ISSN:
- 0013-8703
- Subject:
- Campoletis sonorensis; Cardiochiles nigriceps; Cotesia congregata; Cotesia marginiventris; Helicoverpa zea; Heliothis virescens; Manduca quinquemaculata; Manduca sexta; Solanum habrochaites; Telenomus; Trichogramma; backcrossing; cultivars; eggs; genotype; hybrids; insects; larvae; parasitism; parasitoids; pest resistance; progeny; tomatoes; wild relatives
- Abstract:
- ... Populations of Helicoverpa (= Heliothis) zea (Boddie), Heliothis virescens (F.), Manduca sexta (L.) and M. quinquemaculata (Haw.) and their egg and larval parasitoids were sampled in field plots of the: insect-resistant wild tomato, Lycopersicon hirsutum f. glabratum C. H. Mull, accession PI 134417; susceptible commercial tomato cultivar ‘Better Boy' F₁ hybrid; and selected, moderately resistant b ...
- DOI:
- 10.1111/j.1570-7458.1994.tb01788.x
- https://doi.org/10.1111/j.1570-7458.1994.tb01788.x
- Author:
- Wiseman, B.R.; Bondari, K.
- Source:
- Entomologia experimentalis et applicata 1995 v.77 no.3 pp. 315-321
- ISSN:
- 0013-8703
- Subject:
- Helicoverpa zea; Zea mays; additive gene effects; antibacterial properties; backcrossing; corn; cotton; crop production; epistasis; fecundity; field crops; genetic variance; grain sorghum; host plants; inheritance (genetics); insect pests; insect resistance; larvae; models; parents; peanuts; progeny; recessive genes; soybeans; styles (flowers); United States
- Abstract:
- ... The corn earworm, Helicoverpa zea (Boddie), is a perennial economic pest of field crops in the United States. Maize, Zea mays L., is the major host crop promoting the build-up of devastating corn earworm populations that limit full production of cotton, soybean, peanut, and grain sorghum. Resistance to the corn earworm in maize and in particular sweet maize, would provide an environmentally safe, ...
- DOI:
- 10.1111/j.1570-7458.1995.tb02329.x
- https://doi.org/10.1111/j.1570-7458.1995.tb02329.x
- Author:
- Laster, M.L.; Hardee, D.D.
- Source:
- Journal of economic entomology 1995 v.88 no.1 pp. 77-80
- ISSN:
- 0022-0493
- Subject:
- Helicoverpa zea; Helicoverpa armigera; interspecific hybridization; backcrossing; oviposition; fecundity; larvae; biological development; pupae; weight
- Abstract:
- ... Inbred crosses through three generations and reciprocal backcrosses through five generations using Helicoverpa zea (Boddie) from Stoneville, MS, and H. armigera (Boddie) from Tashkent, Russia were studied for backcross sterility. A high percentage of mated females reproducing indicated a high degree of genetic compatibility between the two species. No indication of backcross sterility was detected ...
- DOI:
- 10.1093/jee/88.1.77
- https://doi.org/10.1093/jee/88.1.77
- Author:
- Tingle, F.C.; Mitchell, E.R.; Baumhover, A.H.
- Source:
- Journal of chemical ecology 1978 v.4 no.4 pp. 471-479
- ISSN:
- 0098-0331
- Subject:
- Heliothis subflexa; Heliothis virescens; Helicoverpa zea; sex pheromones; sex attractants; trapping; pheromone traps; backcrossing; hybrids; mating behavior; olfactometry; wind tunnels; nocturnal activity
- Abstract:
- ... Electric grid traps baited with Heliothis subflexa (Guenée), H. virescens (F.), or H. zea (Boddie) females captured conspecific males with few exceptions.Heliothis subflexa females reduced the attraction ofH. virescens and H. zea males when used as bait simultaneously with females of either of these two species. Backcrosses were made with H. virescens males and female hybrids from a cross between ...
- Handle:
- 10113/23301
- DOI:
- 10.1007/BF00989503
- https://doi.org/10.1007/BF00989503
- Author:
- N. W. Widstrom; W. W. McMillian
- Source:
- Crop science 1973 v.13 no.4 pp. 459-461
- ISSN:
- 0011-183X
- Subject:
- Helicoverpa zea; Zea mays; backcrossing; dent corn; epistasis; heritability; inbreeding; progeny; sweetcorn
- Abstract:
- ... Eleven sweet and 11 dent maize, Zea mays L., inbreds were tested for the types of genetic effects which condition resistance to ear-feeding injury by the corn earworm, Heliothis zea (Boddie). Parental, F₁, F₂, and backcross populations were rated to obtain generation means. Variability among means was partitioned by least squares procedures into portions attributable to additive, dominance, and ep ...
- DOI:
- 10.2135/cropsci1973.0011183X001300040019x
- https://doi.org/10.2135/cropsci1973.0011183X001300040019x