The flexibility of wheat and barley genomes under salinity stress and honeycomb evaluation

., C.G. Ipsilandis; ., B. Vafias; Greveniotis, Vasileios; ., L. Giakalis; Deligeorgidis, P. N.

doi:10.1556/crc.39.2011.1.4

Cited by 1 publication

(2 citation statements)

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“…Various studies have shown the plasticity (flexibility) of the genome (Cullis 1990;Rasmusson & Philips 1997;Brunner et al 2005;Lolle et al 2005, Fasoula & Boerma 2007Ipsilandis et al 2011). Under this consideration, Fasoula and Fasoula (2000) analysed the concept of nonstop selection as a very important procedure of extensive testing, concluding that the breeder will gain fundamental knowledge on some important issues: whether the selection for agronomic traits within advanced generations of selfing is feasible, whether a heritable variation is constantly being created and also, whether cultivars deteriorate with time because they are not constantly being improved.…”

Section: Genotypesmentioning

confidence: 99%

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A breeding concept to improve the performance of locally cultivated bread wheat (Triticum aestivum L.) cultivars

Greveniotis¹,

Zotis²,

Sioki³

et al. 2020

CZECH J GENET PLANT

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The objective of this study was to explore the internal variability in six established F7 commercial wheat cultivars for breeding purposes. They are sown traditionally in the region of Western Macedonia, Greece. Spikes of the six cultivars were sown in 2008 in separate rows. A head to row selection scheme was applied for two growing periods in order to select lines within the cultivars, based on various traits such as: the total spike number, the spike weight per row, the 1000-kernel weight and the specific weight . The final selection was based on the specific weight and the four best rows from each cultivar were selected. All selected lines were tested in a field trial with a randomised complete block design (RCB). The original seed of the cultivars were used as controls. Statistically significant differences were found for all the studied traits. The line selections differed from the original cultivars, sometimes highly significantly. In conclusion, commercial cultivars that are sown traditionally for many years may contain exploitable variability, which reveals, that the continuous selection within cultivars is necessary to avoid cultivar deterioration and to improve the yield and other traits. The results indicate a degeneration of grain yield from 8% to 20%. Although eye-selection restricts off-types, our results mainly indicate new variability and cultivar performance deterioration under extreme biotic and abiotic stress.

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Section: Genotypesmentioning

confidence: 99%

“…(Fasoulas 1988). In bread wheat and barley (Hordeum vulgare L.) under salinity stress, Ipsilandis et al (2011) found internal variability in the commercial cultivars for drought tolerance as a result of the flexibility of the genomes of the two species, but the genetic mechanism for such a behaviour was undefined.…”

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confidence: 99%