The World Wheat Book, Volume 2. A History of Wheat Breeding

Shewry, Peter R.

doi:10.1016/j.jcs.2011.10.001

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…The two-line hybridization is the most efficient and easiest to implement because the female can be manipulated to be either self-fertile or male sterile simple maintenance and breeding, and it is relatively inexpensive compared with the other methods (Yang et al, 1997;Zhao et al, 1999;Murai, 2001). Both cytoplasmic male sterility and thermo-photosensitive male sterility (Rajaram, 2001;Peter, 2011) have been reported in wheat. Cytoplasmic thermo-photosensitive male sterility lines are mainly used for crossbreeding, and nuclear male sterility is used to modify breeding populations via recurrent selection (Liu et al, 2002;Wang et al, 2017).…”

Section: Researchmentioning

confidence: 99%

A Sterility Induction Trait in the Genic Male Sterility Wheat Line 4110S Induced by High Temperature and its Cytological Response

et al. 2018

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Male sterility has an essential role to exploit heterosis. In particular, the development of the photo‐thermosensitive male sterility system has accelerated hybrid wheat (Triticum aestivum L.) breeding. In this study, we obtained a novel thermosensitive genic male sterility (TGMS) wheat line 4110S, where its fertility was sensitive to temperature during the later uninucleate stage and the line was completely male sterile when the average temperature exceeded ∼20°C. Phenotypic and cytological analyses detected morphologically distinct hallmarks of fertility‐to‐sterility conversion in the anther during the trinucleate stage. Delayed programmed cell death in the tapetum affected microspore development and caused defective pollen exine formation, which ultimately resulted in male sterility. The TGMS line could be used in the two‐line hybrid production systems, where it can maintain male sterility via self‐pollination at low temperatures and can be crossed with a pollen donor to produce hybrid wheat seeds at higher temperatures. Our findings provide a better understanding of the mechanisms responsible for male sterility in wheat, thereby facilitating production of hybrid wheat seed.

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Section: Researchmentioning

confidence: 99%

A Sterility Induction Trait in the Genic Male Sterility Wheat Line 4110S Induced by High Temperature and its Cytological Response

et al. 2018

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“…In this area, the average yearly rainfall is ≈400-600 mm, with unequally distributed rainfall, mostly in autumn and spring, monthly mean temperatures are from 4 to 20 °C, with extreme temperature events of −15 and 40 °C also recorded, and with more than 100 days of frost-risk every year, so winter and facultative wheat types are commonly grown. 27 The surveys were conducted by driving throughout the area and stopping when Aegilops species were detected growing in close proximity to bread wheat fields (<1 m). The surveys were conducted across the eight provinces of Castilla y León (Ávila, AV; Burgos, BU; Segovia, SG; León, LE; Palencia, PA; Salamanca, SA; Valladolid, VA and Zamora, ZA), located in the northern part of the Meseta, and in the provinces of Madrid (MA) and Guadalajara (GU, Castilla-La Mancha), located in the central part.…”

Section: Methodsmentioning

confidence: 99%

Natural hybridization between wheat (Triticum aestivum L.) and its wild relatives Aegilops geniculata Roth and Aegilops triuncialis L.

Loureiro

Escorial

Chueca

2023

Pest Management Science

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BACKGROUND: Cultivated bread wheat (Triticum aestivum L.) spontaneously hybridizes with wild/weedy related Aegilops populations, but little is known about the actual rates at which this hybridization occurs under field conditions. It is very important to provide reliable empirical data on this phenomenon in order to assess the potential crop-wild introgression, especially in the context of conducting risk assessments for the commercialization of genetically modified (GM) wheat, as gene flow from wheat to Aegilops species could transfer into the wild species genes coding for traits such as resistance to herbicides, insects, diseases or environmental stresses.RESULTS: The spontaneous hybridization rates between wheat and A. geniculata and A. triuncialis, which are very abundant in the Mediterranean area, have been estimated for the first time in the northern part of the Meseta Central, the great central plateau which includes the largest area of wheat cultivation in Spain. Hybridization rates averaged 0.12% and 0.008% for A. geniculata and A. triuncialis, respectively. Hybrids were found in 26% of A. geniculata and 5% of A. triuncialis populations, at rates that can be ≤3.6% for A. geniculata and 0.24% for A. triuncialis. CONCLUSION:The detection of Aegilops spp.-wheat hybrids in Aegilops populations indicates that gene flow can occur, although wheat is considered a crop with a low-to-medium risk for transgene escape. These data on field hybridization rates are essential for GM wheat risk assessment purposes.

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“…This pure-line selection did not entail the development of new genotypes as the improvement was only achieved by identifying and isolating the best lines already existing within the original landrace. This methodology was used by Nazareno Strampelli in Italy to release the durum wheat cultivar 'Senatore Cappelli' in 1915 from the Algerian population 'Jean Retifah' [37], by Enrique Sánchez-Monge Parellada in Spain to release the barley variety 'Albacete' from a selection within a local population, the bread wheat 'Aragón 03' selected by Manuel Gadea from a selection within the local variety 'Catalán de Monte' and the durum wheat varieties 'Andalucía 344' and 'Jerez 36' obtained in Spain by Juan Bautista Camacho from 'Manchón de Alcalá la Real' and 'Raspinegro de Alcolea', respectively [38].…”

Section: From Local Landraces To Modern Mediterranean Wheat Cultivarsmentioning

confidence: 99%

Wheat: A Crop in the Bottom of the Mediterranean Diet Pyramid

Royo¹,

Soriano²,

Álvaro³

2017

Mediterranean Identities - Environment, Society, Culture

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Wheat currently provides 18% of the daily intake of calories and 20% of proteins for humans. Since its domestication in the Fertile Crescent, wheat has been the basic staple food of the major civilizations of Europe, West Asia and North Africa. The wheatgrowing area within the Mediterranean Basin represents 27% of the arable land, and the region represents 60% of the world's growing area for durum wheat, the species used for pasta manufacturing. Many changes have occurred from the low-productive plants cultivated in prehistoric times to the modern varieties that are now grown, which ofer high productivity and quality standards. During the migration process of ancient forms of wheat from the east to the west of the Mediterranean Basin, both natural and human selections occurred, resulting in the development of local landraces characterized by their huge genetic diversity and their documented resilience to abiotic stresses. Wheat breeding activities conducted in the Mediterranean Basin during the twentieth century resulted in large genetic gains in yield and quality. New wheat varieties to be grown in the Mediterranean Basin will need to be resilient to climate change because more frequent episodes of higher temperatures and water scarcity are to be expected.

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The World Wheat Book, Volume 2. A History of Wheat Breeding

Cited by 4 publications

References 23 publications

A Sterility Induction Trait in the Genic Male Sterility Wheat Line 4110S Induced by High Temperature and its Cytological Response

A Sterility Induction Trait in the Genic Male Sterility Wheat Line 4110S Induced by High Temperature and its Cytological Response

Natural hybridization between wheat (Triticum aestivum L.) and its wild relatives Aegilops geniculata Roth and Aegilops triuncialis L.

Wheat: A Crop in the Bottom of the Mediterranean Diet Pyramid

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