Wheat Breeding: Current Status and Bottlenecks

Bedö, Z.; Láng, László

doi:10.1007/978-3-319-23494-6_3

Cited by 20 publications

(12 citation statements)

References 73 publications

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“…In other cases, recombination in the hybrids between chromosomes of the cultivated species and the CWR is supressed or reduced, which makes introgression more difficult (Bedő and Láng, 2015). In this way, in wheat the gene Ph1 suppresses pairing and recombination of wheat and alien chromosomes; however, in plants that are nullisomic for the Ph1 gene, or in ph1b mutant stocks, homoelogous wheat and alien chromosomes can pair and recombine, which facilitates introgression from CWR in the cultivated wheat (Friebe et al, 2012).…”

Section: Interspecific Hybridization and Backcrossingmentioning

confidence: 99%

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Introgressiomics: a new approach for using crop wild relatives in breeding for adaptation to climate change

et al. 2017

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The need to boost agricultural production in the coming decades in a climate change scenario requires new approaches for the development of new crop varieties that are more resilient and more efficient in the use of resources. Crop wild relatives (CWRs) are a source of variation for many traits of interest in breeding, in particular tolerance to abiotic and biotic stresses. However, their potential in plant breeding has largely remained unexploited. CWRs can make an effective contribution to broadening the genetic base of crops and to introgressing traits of interest, but their direct use by breeders in breeding programs is usually not feasible due to the presence of undesirable traits in CWRs (linkage drag) and frequent breeding barriers with the crop. Here we call for a new approach, which we tentatively call 'introgressiomics', which consists of mass scale development of plant materials and populations with introgressions from CWRs into the genetic background of crops. Introgressiomics is a form of

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Section: Interspecific Hybridization and Backcrossingmentioning

confidence: 99%

Section: The Introgressiomics Approachmentioning

confidence: 99%

Introgressiomics: a new approach for using crop wild relatives in breeding for adaptation to climate change

et al. 2017

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“…However, the lack of sufficient genetic diversity in germplasm collections of bread wheat challenges geneticists' and breeders' efforts to respond to the increasing global demand for food security [Abberton et al, 2016]. In order to meet the future challenges of sustainable wheat production, utilization of the genetic variation in wild relatives to develop new germplasm in pre-breeding programs may be an efficient approach for wheat breeders [Bedő and Láng, 2015]. Agriculturally useful genes have already been transferred into wheat from the related genera Secale , Dasypyrum , Thinopyrum , Agropyron , and Aegilops , and consequently have increased its genetic diversity and reliability of production [Friebe et al, 1996;Khlestkina, 2014;Dempewolf et al, 2017].…”

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confidence: 99%

Characterization of New Wheat-<b><i>Dasypyrum breviaristatum</i></b> Introgression Lines with Superior Gene(s) for Spike Length and Stripe Rust Resistance

Wang

Yü

et al. 2018

Cytogenet Genome Res

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Dasypyrum breviaristatum (genome V^bV^b) contains potentially important traits for commercial wheat production. Chromosome 2V^b of D. breviaristatum carries several desirable agronomic characters, including long spike length as well as enhanced resistance to stripe rust, which are expressed in a common wheat background. In this study, wheat-D. breviaristatum 2V^b deletion lines were produced and identified by fluorescence in situ hybridization (FISH), and 74 molecular markers specific to D. breviaristatum chromosome 2V^b were physically localized in 4 distinct chromosomal regions. New wheat-D. breviaristatum 2V^b translocation lines were also characterized by FISH. The breakpoint of the translocation T3AS.3AL-2V^bS was determined by physically mapped molecular markers. Field evaluation revealed that genes affecting plant height and spike length are located on fraction length (FL) 0.65-1.00 of 2V^bS, while the stripe rust resistance gene(s) are located on FL 0.40-1.00 of D. breviaristatum chromosome 2V^bL. The newly characterized wheat-Dasypyrum chromosomal introgressions are of potential value for the improvement of the yield and disease resistance of wheat.

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“…However, occasionally the phenomenon of selective chromosome elimination of the donor parent may occur, complicating the introgression of fragments of CWR (Dwivedi et al, 2008). In other cases, recombination in the hybrids between chromosomes of the cultivated species and the CWR is supressed or reduced, which makes introgression more difficult (Bedő and Láng, 2015).…”

Section: Peruvianummentioning

confidence: 99%

“…Another successful example of alien gene introgression was the introduction of the Lr19 leaf rust resistance allele, from Thinopyrum ponticum to wheat (Sharma and Knott, 1966). This gene not only confers rust resistance to wheat, but also increases yield, biomass and grain number (Bedő and Láng, 2015 (Zamir, 2001;Gur and Zamir, 2004). Sets of ILs with overlapping fragments of different size can be exploited for different purposes, including for the analysis of the genetic basis for traits of (Zamir, 2001;Alseekh et al, 2013;Guerrero et al, 2016).…”

Section: The Introgressiomics Approachmentioning

confidence: 99%

Genetics and Genomics of Cultivated Eggplants and Wild Relatives

Gramazio¹

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"Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less." Maria Salomea Skłodowska-Curie AgradecimientosAunque parezcan mucho menos, ya siete son los años que llevo en el COMAV. Los años pasan volando cuando el ambiente de trabajo es estimulante, constructivo, apasionante, gratificante, motivador, intrigante, creativo, integrador, cooperativo, productivo, positivo, divertido…, familiar.Todo empezó aquella tarde del 10 de noviembre del 2010, cuando Lola Raigón, a quien va mi eterna gratitud, me presentó la persona que iba a cambiar mi vida, Jaime Prohens.Jaime, la admiración, el respeto y la gratitud que siento por ti no se pueden expresar en unas pocas frases. Eres la persona que más me ha enseñado, motivado y animado en estos años. Has conseguido sacar de mí unas cualidades que ni siquiera había imaginado tener. Tu inteligencia, sabiduría, humildad, paciencia, hacen de ti un verdadero líder. Gracias por estar pendiente en cada momento, espero colaborar contigo durante muchos años más. Eres un ejemplo a seguir y fuente de inspiración y guía para mi y muchas personas.Mi formación doctoral no sería completa si no hubiera sido por tí, Santi. Intelligente, simpatíco, caótico, siempre de buen humor y "runner".Gracias por todo el conocimiento, las buenas ideas, las clases de Génomica, las risas y los videos "frikis" que has compartido conmigo. Gracias por alegrar nuestros días.Mariola, aunque burocráticamente no has podido ser mi co-directora, te agradezco el apoyo, motivación y alegría de estos años. Aunque ahora pasamos todo el día en los despachos, echo de menos los primeros años de laboratorio, cuando pasábamos horas y horas hablando de lo que fuera. Junto a Jaime y Santi, eres un pilar de "Los Berenjen@s".Gracias a mi "hermano mayor" Javi, por los muchos momentos de amistad pasados juntos, por tu inteligencia, por compartir tus experiencias, por tu buen gusto musical, tu escepticismo, por ser un gran amigo."Los Berenjen@s" se han ido multiplicando y muchas son las entradas que hemos recolectado en estos años alrededor del mundo. Me hubiera gustado escribir algo sobre cada uno de vosotros, pero necesitaría otro capítulo de tesis, así que os agradeceré de forma conjuntas.Gracias Abou, Adriana, Agustín, Alba E., Alba L., Alessio, Andrea, Arantxa, Arunika, Bianca, Brice, Camil, Carolina, Celia, Celine, Cristina, Dani, David, Dionís, Dora, Edgar, Elena C., Elena R., Elisa, Francesco, Giulio, Gloria, Ioana, Irene, Isa, Juan, Juan Pablo, Judith, Lahiru, Lara, Laura, Loles, Maria, Marieta, Michael, Muditha, Nacho, Nadia, Nirasha, Noelia, Orsi, Pelin, Prashant, Ramses, Ranil, Rory, Silia, Sorin, Trong, por haber aportado vuestro granito de arena para la realización de esta tesis y de colaboraciones varias. Todos, los que todavía estáis por aquí y los que se han ido, habéis dejado una huella en el laboratorio y en mí (Pido disculpa si se me ha olvidado alguien, sois muchos los que se han pasado por el labo).Gracias también a todos mis compañeros del COMAV,...

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Wheat Breeding: Current Status and Bottlenecks

Cited by 20 publications

References 73 publications

Introgressiomics: a new approach for using crop wild relatives in breeding for adaptation to climate change

Introgressiomics: a new approach for using crop wild relatives in breeding for adaptation to climate change

Characterization of New Wheat-<b><i>Dasypyrum breviaristatum</i></b> Introgression Lines with Superior Gene(s) for Spike Length and Stripe Rust Resistance

Genetics and Genomics of Cultivated Eggplants and Wild Relatives

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