The World Wheat Book: A History of Wheat Breeding

Bonjean, Alain P.; Angus, W. J.; Sági, F.

doi:10.1007/bf03543695

Cited by 100 publications

(77 citation statements)

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“…The bacterial product Cedomon was developed after evaluation of several hundred strains of P. chlororaphis. The number of evaluated genotypes per one developed effective wheat cultivar in breeding nurseries of the main cereal crops of the leading breeding companies reaches several hundreds of thousands of genotypes (Bonjean et al, 2011). It is likely that relatively low efficiency of strain MA 342 is due to very low intensity of selection compared to industrial crop breeding intensity.…”

Section: Discussionmentioning

confidence: 99%

Effects of organic seed treatment methods on spring barley seed quality, crop, productivity and disease incidence

Liatukas

Supronienė

Ruzgas

et al. 2019

Zemdirbyste-Agriculture

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Low energy electrons (electron treatment), aerated steam (thermal treatment) and a bacterial product Cedomon containing Pseudomonas chlororaphis (bacterial treatment) were selected for the trial as the most popular seed treatment methods in Western and Northern Europe. This trial was aimed to evaluate the effect of treatments on seed sanitation, crop and disease development and yield parameters. Two spring barley (Hordeum vulgare L.) cultivars 'Luokė' and 'Alisa DS' were investigated during 2014-2015 under the conditions of Central Lithuania. Low energy electron treatment was found to exert a negative effect: the mean yield decrease was 20% compared to the control. The yield reduction resulted from the inefficient seed sanitation and reduced field emergence compared to the control. Thermal treatment increased the yield by an average of 35%, viz. in 2014 by 58% and in 2015 by 13%. The yield increase was influenced by very efficient seed sanitation in the first year but not in the second year. Bacterial treatment with Cedomon increased the yield by an average of 3%. This treatment improved neither seed health nor crop stand density in 'Luokė'; however, it had a positive effect on the seeds of 'Alisa DS' in both experimental years. Improved seed health increased grain yield in 'Alisa DS', while poor seed health decreased yield in 'Luokė'. None of the seed treatment methods tested showed consistent and unquestionable results. The yield increase depended mainly on the improved seed health, thus the main strategy to produce stable yield is seed health testing of the lots intended for use in organic agriculture.Please use the following format when citing the article: Liatukas Ž., Supronienė S., Ruzgas V., Leistrumaitė A. 2019. Effects of organic seed treatment methods on spring barley seed quality, crop, productivity and disease incidence. Zemdirbyste-Agriculture, 106 (3): 241-248.

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Section: Discussionmentioning

confidence: 99%

Effects of organic seed treatment methods on spring barley seed quality, crop, productivity and disease incidence

Liatukas

Supronienė

Ruzgas

et al. 2019

Zemdirbyste-Agriculture

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“…There are a minimum of six independent sources of Stb6 in world wheat breeding: the landraces Chinese Spring, Blé Seigle and Heines Kolben, which were selected independently from landraces in the 19th century (Bonjean & Angus, 2001), and the cultivars Atlas 66 from the USA, Bezostaya 1 from Russia, and Veranopolis from Brazil. Seven further cultivars -Arina, Armada, Disponent and Poros from Europe, and Gene, Olaf and Tadinia from the USA -share no common ancestor carrying Stb6, either with each other or with the foregoing six varieties (Payne et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Presence of the Stb6 gene for resistance to septoria tritici blotch (Mycosphaerella graminicola) in cultivars used in wheat‐breeding programmes worldwide

2005

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Fifty‐two wheat cultivars and breeding lines, most of which have been used in breeding programmes worldwide, were tested for isolate‐specific resistance to Mycosphaerella graminicola isolate IPO323, which interacts with the Stb6 gene of wheat (first identified in cvs Flame and Hereward) via a gene‐for‐gene relationship. Twenty‐three lines were specifically resistant to this isolate. Sixteen resistant lines were crossed with Flame for a test of allelism. All progeny lines were resistant, suggesting that the 16 parental lines had Stb6, a gene allelic to it or a gene closely linked to it. In 14 lines, resistance to IPO323 was controlled by Stb6 only. An exception was Kavkaz‐K4500 L6.A.4., which has two genes for resistance to IPO323, one of which is Stb6. The microsatellite marker Xgwm369 was used to examine genetic diversity in the region of the genome containing Stb6, to which it is closely linked. Eleven alleles of Xgwm369, with amplified fragments of 10 different sizes, as well as apparent nonamplification of this marker in Bulgaria 88, were detected. Through the use of information about lines’ ancestry, combined with Xgwm369 alleles, it was shown that Stb6 entered world wheat‐breeding programmes on a minimum of six occasions, and possibly from as many as 11 sources. The presence of Stb6 in both European and Chinese landraces suggests that this gene has been present in cultivated wheat since the earliest times of agriculture.

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“…Thatcher was introduced in the early 1920s and was one of the first leaf rust-resistant varieties; Chris was introduced in the mid-1960s with earlier maturity and leaf rust resistance; Oxen was introduced in the late 1990s with early heading and resistance to leaf and stem rust. All cultivars are still grown today for breeding purposes (Bonjean & Angus, 2001). Overall, it is clear that the response of wheat to recent increases in atmospheric [CO 2 ] is greater for the older cultivars (i.e.…”

Section: Discussionmentioning

confidence: 99%

Quantitative and qualitative evaluation of selected wheat varieties released since 1903 to increasing atmospheric carbon dioxide: can yield sensitivity to carbon dioxide be a factor in wheat performance?

Ziska

Morris

Goins

2004

Global Change Biology

125

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The sensitivity of yield and quality parameters to carbon dioxide concentration [CO 2 ] was determined for individual lines of hard-red spring wheat released in 1903, 1921, 1965 and 1996. All cultivars were evaluated with respect to growth and vegetative characteristics, grain yield and nutritional quality in response to [CO 2 ] increases that corresponded roughly to the CO 2 concentrations at the beginning of the 20th century, the current [CO 2 ], and the future projected [CO 2 ] for the end of the 21st century, respectively. Leaf area ratio (cm 2 g À1 ) declined and net assimilation rate (g m 2 day À1 ) increased in response to increasing [CO 2 ] for all cultivars during early vegetative growth. By maturity, vegetative growth of all cultivars significantly increased with the increase in [CO 2 ]. Seed yield increased significantly as [CO 2 ] increased, with yield sensitivity to rising [CO 2 ] inversely proportional to the year of cultivar release. Greater [CO 2 ] yield sensitivity in older cultivars was associated with whole-plant characteristics such as increased tillering and panicle formation. Grain and flour protein, however, declined significantly with increasing [CO 2 ] and with year of release for all cultivars, although absolute values were higher for the older cultivars. Overall, these data indicate that yield response at the whole-plant level to recent and projected increases in [CO 2 ] has declined with the release of newer cultivars, as has protein content of grain and flour. However, if agronomic practice can be adapted to maximize individual plant performance, [CO 2 ] responsive characteristics of older cultivars could, potentially, be incorporated as factors in future wheat selection.

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The World Wheat Book: A History of Wheat Breeding

Cited by 100 publications

References 0 publications

Effects of organic seed treatment methods on spring barley seed quality, crop, productivity and disease incidence

Effects of organic seed treatment methods on spring barley seed quality, crop, productivity and disease incidence

Presence of the Stb6 gene for resistance to septoria tritici blotch (Mycosphaerella graminicola) in cultivars used in wheat‐breeding programmes worldwide

Quantitative and qualitative evaluation of selected wheat varieties released since 1903 to increasing atmospheric carbon dioxide: can yield sensitivity to carbon dioxide be a factor in wheat performance?

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