Evaluation of the European Union Maize Landrace Core Collection for Resistance to Sesamia nonagrioides (Lepidoptera: Noctuidae) and Ostrinia nubilalis (Lepidoptera: Crambidae)

Malvar, R. A.; Butrón, Ana; Álvarez, Ángel Carracedo; Ordás, Bernardo; Soengas, Pilar; Revilla, Pedro; Ordás, A.

doi:10.1093/jee/97.2.628

Cited by 34 publications

(35 citation statements)

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“…These results support the importance of the evaluation of new materials because they can improve the level of resistance already achieved. Similarly, Malvar et al (2004) found some corn landraces that improved stem resistance to corn borers compared to that reported by Malvar et al (1993).There was a significant and negative relationship between percentage of stem damaged and days to silking ( (Tables 1 and 3). The other hybrid (EP79 × W552) which involves the inbred EP79 developed by selection for resistance to pink stem borer, differed significantly from A661 × EP42, described as tolerant in a previous work , for stem and ear damage, but did not differ for yield under pink stem borer infestation.…”

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confidence: 55%

Searching for New Sources of Pink Stem Borer Resistance in Maize (Zea mays L.)

Butrón

Sandoya

Santiago

et al. 2005

Genet Resour Crop Evol

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The pink stem borer (Sesamia nonagrioides Lef.) is the main corn (Zea mays mays L.) pest in the Mediterranean area. Although, screening for resistance to this pest has been successful, the level of resistance shown by the most resistant varieties is not high. The objectives of the present work were: i) the evaluation for pink stem borer resistance of the non tested inbred lines, field and popcorn materials, from the collection maintained at the Misión Biológica de Galicia and ii) the study of the performance, under pink stem borer infestation, of inbreds selected for resistance to pink stem borer in hybrid combination. Forty four inbred lines non tested yet for resistant to pink stem borer along with five inbred lines previously reported as resistant to stem and ear attack, were evaluated in 2002 and 2003. In adjacent experiments, hybrids EP79 × W552, EP77 × B93, and A661 × EP42 were tested along with a resistant hybrid, MEB531-Bt, and a susceptible hybrid, INRA 260. New sources of resistance to pink stem borer have been detected among inbred lines improving the level of resistance presented by previously tested inbreds. Some of these lines were successfully developed by pedigree selection for resistance to pink stem borer.Key words: Germplasm, Maize, Resistance, Sesamia nonagrioides. 3 In Europe, stalk damage by corn borers is the largest biotic constraint for corn crops.The pink stem borer (Sesamia nonagrioides Lef.) is the main threat for corn (Zea mays mays L.) growers in the Mediterranean area (Cordero et al. 1998). Corn varieties genetically modified by the introduction of Bacillus thuringiensis (Bt) toxin genes appeared as the solution to eliminate losses caused by many lepidopteran species.Several studies, however, have demonstrated that insect can adapt to Bt toxins and pyramiding of several resistance genes could delay insect adaptation (Tabashnik 1994, Huang et al. 1999, Andow et al. 2000. That could be done by combining the partial natural resistance present among corn varieties with the total resistance of Bt-toxin genes.The search for resistant corn varieties to pink stem borer attack has been focused on inbred materials (Cartea et al. 1994) and populations (Malvar et al. 1993Malvar et al. 2004) coming mostly from United States and Europe. Although, the screening has successfully identified materials that performed significantly better than others under pink stem borer infestation, the level of resistance shown by the most resistant varieties is not high. The resistance level could be improved by recurrent selection in promising populations. In the long term, recurrent selection would probably render some progress, but new searches for resistance among inbred lines could supply parents for making more resistant hybrid than those available on the market.As part of our breeding work, inbred lines are constantly generated, and materials from other germplasm banks are requested for attending particular demands of our breeding program. These materials could supply some favorable factors agai...

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supporting

confidence: 55%

Searching for New Sources of Pink Stem Borer Resistance in Maize (Zea mays L.)

Butrón

Sandoya

Santiago

et al. 2005

Genet Resour Crop Evol

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“…Hopefully, Oroso su1 will show improved survival under cold conditions compared to su1 controls; Revilla et al (1998) indicates that Oroso can improve the ability of some su1 inbreds to germinate and survive under cold conditions. Rastrojero might be able to supply a trait missing in these hybrids: resistance to ear damage by corn borers (Malvar et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…However, Rastrojero is well adapted to the conditions of Spain's interior and could be a promising source of adaptation traits for sweetcorn in this region; it could also help to improve sweetcorn resistance to corn borers (Malvar et al, 1993(Malvar et al, , 2004. Resistance to corn borers is required in both regions since ear damage by the corn borer, the European corn borer (Ostrinia nubilalis Hubner) and the pink stem borer (Sesamia nonagrioides Lef.…”

Section: Introductionmentioning

confidence: 99%

Agronomic performance of sweetcorn populations derived from crosses between sweetcorn and field corn

Butrón

Álvarez

Revilla

et al. 2008

Span. j. agric. res.

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The adaptation of sweetcorn (Zea mays L.) to Spanish growing conditions needs to be improved, something that could be achieved by incorporating traits from field corn populations. The aim of the present study was to analyse the performance of sweetcorn populations carrying the genes sugary1 (su1) or shrunken2 (sh2), as well as sugary enhancer double mutants (su1 se1), produced by crosses between sweetcorn donor populations and the Spanish field corn populations Lazcano, Oroso and Rastrojero. The three field corn populations plus the su1, su1 se1 and sh2 populations derived from them, as well as the su1, su1 se1, and sh2 donor populations used in the crosses with the field corn populations, were evaluated for their agronomic performance. Several hybrids were used as controls. Assessments were made in Zaragoza (NE Spain) and Pontevedra (NW Spain) over two years. The ability of the field corn populations to improve the sweetcorn varieties was not greatly affected by the sweetcorn mutant involved. The field corn populations chosen as donors for improving sweetcorn must depend on the growing conditions in mind. Sweetcorn populations derived Oroso would appear to be the most favourable for northern Spain, while those derived from Rastrojero would appear to be the most suitable for inland Spain, although other field corn populations are still to be examined.Additional key words: maize, shrunken, sugary, sugary enhancer. Resumen Evaluación agronómica de poblaciones dulces de maíz derivadas de cruzamientos entre maíz dulce y maíz granoLa adaptación del maíz dulce (Zea mays L.) a las condiciones españolas debe ser mejorada y esto se puede realizar mediante la incorporación de factores de adaptación de las poblaciones locales. El objetivo del presente estudio fue evaluar el resultado de las poblaciones de maíz dulce sugary1 (su1), sugary enhancer (su1 se1), y shrunken2 (sh2) derivadas de las poblaciones de maíz grano Lazcano, Oroso y Rastrojero. Las tres poblaciones originales junto con las su1, su1 se1 y sh2 convertidas y las tres poblaciones utilizadas como donantes de los genes su1, su1 se1, y sh2, fueron evaluadas para comportamiento agronómico, utilizando varios híbridos como testigos. Los ensayos se realizaron en dos localidades españolas (Zaragoza y Pontevedra) durante dos años. La capacidad de las poblaciones de maíz grano para mejorar el maíz dulce no se vio en gran medida afectada por el tipo de mutante incorporado. Las poblaciones de maíz grano utilizadas como donantes dependen de las condiciones de crecimiento, siendo Oroso la más favorable para el Norte de España. Las poblaciones de maíz dulce derivadas de Rastrojero parecen ser las más convenientes para la España interior, no obstante pueden explorarse otro tipo de poblaciones de maíz grano.Palabras clave adicionales: maíz, shrunken, sugary, sugary enhancer.

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“…Practical breeding research using landraces has been carried out in several crops, e.g. rice (Hargrove and Cabanilla 1979), maize (Malvar et al 2004), legumes (Isemura et al 2001, Zhang et al 2009) as well as wheat. For bread wheat (Triticum aestivum L.) the importance of landraces is more critical than for other crops because it does not have a direct wild ancestor with the same genomic constitution due to its hybrid origin (Kihara 1944, McFadden andSears 1946).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the genetic diversity of an Afghan wheat collection based on morphological variation, HMW glutenin subunit polymorphisms, and AFLP

et al. 2009

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To reveal the genetic properties of an Afghan wheat collection maintained in Kyoto University, variations in morphological character and HMW glutenin subunit composition were investigated in 410 Afghan wheat accessions together with 65 accessions of Iranian and Pakistani wheat. The majority of the samples had primitive morphological characteristics, namely, tall plant height and lax spikes with a spelt head. The most frequent combination of HMW glutenin subunit was Glu-A1c (encoding subunit null), Glu-B1b (7 + 8), and Glu-D1a (2 + 12). Alleles preferable for modern breeding such as Glu-B1c and Glu-D1d were rare in our samples. Consequently, we concluded that the Afghan wheat accessions investigated in this study have genetic characteristics typical of landraces. As for their genetic diversity, the level of variation in the HMW glutenin subunit in Afghanistan was found to be equal to or lower than that in the neighboring countries. The largest variation was observed in Western Iran and Pakistan. AFLP analysis using 91 representative accessions also showed a comparatively low level of diversity in Afghanistan. These results suggest that a decrease in genetic diversity has occurred in Afghanistan. A novel HMW glutenin subunit (2.8) was found in this study, indicating the potential usefulness of Afghan landraces for wheat breeding.

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Evaluation of the European Union Maize Landrace Core Collection for Resistance to Sesamia nonagrioides (Lepidoptera: Noctuidae) and Ostrinia nubilalis (Lepidoptera: Crambidae)

Cited by 34 publications

References 16 publications

Searching for New Sources of Pink Stem Borer Resistance in Maize (Zea mays L.)

Searching for New Sources of Pink Stem Borer Resistance in Maize (Zea mays L.)

Agronomic performance of sweetcorn populations derived from crosses between sweetcorn and field corn

Evaluation of the genetic diversity of an Afghan wheat collection based on morphological variation, HMW glutenin subunit polymorphisms, and AFLP

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