UMH 1200, a Breeding Line within the Muchamiel Tomato Type Resistant to Three Viruses

García‐Martínez, Santiago; Grau, Adrián; Alonso, Aránzazu; Rubio, Fernando; Valero, Manuel; Ruiz, José L.

doi:10.21273/hortsci.46.7.1054

Cited by 10 publications

(9 citation statements)

References 6 publications

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“…For titratable acidity (TA), the differences depend on the year: in 2014 in favor of UMH1209 and in 2015 in favor of 'Pera294' (4% and 17%, respectively) (Table 2). Similar results have been obtained previously with 'Muchamiel' (García- Martínez et al, 2011), 'De la pera' (García-Martínez et al, 2012), and cherry (García-Martínez et al, 2020) breeding lines with homozygous TYLCV resistance, obtained in the School of Engineering of Orihuela, Miguel Hern andez University tomato breeding program. These decreases are due to the introgressed genes themselves and/or to the linkage drag associated with the Ty-1 gene, which confers resistance to TYLCV (Rubio et al, 2016).…”

Section: Description and Performancesupporting

confidence: 89%

UMH1209 and UMH1155: New ‘Moruno Pera’ Tomato Breeding Lines Resistant to Virus

García‐Martínez¹,

Grau²,

Alonso³

et al. 2020

horts

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Section: Description and Performancesupporting

confidence: 89%

UMH1209 and UMH1155: New ‘Moruno Pera’ Tomato Breeding Lines Resistant to Virus

García‐Martínez¹,

Grau²,

Alonso³

et al. 2020

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“…In Spain, for example, with this aim of local and cultural adaptation, new improved materials have been developed from landraces in tomatoes (Casals et al, 2010; Garcia-Martínez et al, 2011), beans (Bosch et al, 1998; Almirall et al, 2010; Ferreira et al, 2012), onions (Simó et al, 2012), and eggplants (Prohens et al, 2009). It would be difficult to argue that these cultivars should not be considered landraces because they have been obtained using breeding techniques like directed crossings and/or self-fertilization followed by selection.…”

Section: Landraces the New Generationmentioning

confidence: 99%

Toward an Evolved Concept of Landrace

Casañas¹,

Simó²,

Casals³

et al. 2017

Front. Plant Sci.

180

124

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The term “landrace” has generally been defined as a cultivated, genetically heterogeneous variety that has evolved in a certain ecogeographical area and is therefore adapted to the edaphic and climatic conditions and to its traditional management and uses. Despite being considered by many to be inalterable, landraces have been and are in a constant state of evolution as a result of natural and artificial selection. Many landraces have disappeared from cultivation but are preserved in gene banks. Using modern selection and breeding technology tools to shape these preserved landraces together with the ones that are still cultivated is a further step in their evolution in order to preserve their agricultural significance. Adapting historical landraces to present agricultural conditions using cutting-edge breeding technology represents a challenging opportunity to use them in a modern sustainable agriculture, as an immediate return on the investment is highly unlikely. Consequently, we propose a more inclusive definition of landraces, namely that they consist of cultivated varieties that have evolved and may continue evolving, using conventional or modern breeding techniques, in traditional or new agricultural environments within a defined ecogeographical area and under the influence of the local human culture. This includes adaptation of landraces to new management systems and the unconscious or conscious selection made by farmers or breeders using available technology. In this respect, a mixed selection system might be established in which farmers and other social agents develop evolved landraces from the variability generated by public entities.

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“…This breeding line allows farmers to obtain an acceptable harvest with intense virus incidence conditions. However, important yield decreases (ranging between 50% and 75%) have been reported for UMH 1200 with low virus incidence conditions (García-Martínez et al, 2011). This result is due to the introgressed genes and/or to the linkage drag, as previously has been reported in processing tomatoes (Tanksley et al, 1998).…”

mentioning

confidence: 72%

“…However, the incidence of several viruses as Tomato mosaic virus (ToMV), Tomato spotted wilt virus (TSWV), and Tomato yellow leaf curl virus (TYLCV) can make the Muchamiel (and other) landraces cultivation nonviable in many areas, especially in open field (Pic o et al, 2002). The Miguel Hernández University breeding program for the introgression of virus into Spanish landraces has resulted in the release of the UMH 1200 breeding line, homozygous for Tm-2 a , Ty-1, and Sw-5 genes (García-Martínez et al, 2011). This breeding line allows farmers to obtain an acceptable harvest with intense virus incidence conditions.…”

mentioning

confidence: 99%