Effect of 7DS-7DL-7Ae#1L AND 2AL-2AS-2MV#1 combinations of translocations on productivity and grain quality of spring bread wheat

Autor: Alexander Evgenievich Druzhin, Sergey Nikolaevich Sibikeev, Olga Aleksandrovna Baranova
Rok vydání: 2022
Předmět:
Zdroj: The Agrarian Scientific Journal. :34-38
ISSN: 2587-9944
2313-8432
DOI: 10.28983/asj.y2022i10pp34-38
Popis: The Lr19/Sr25 genes in 7DS-7DL-7Ae#1L translocation (from Thinopyrum ponticum Podp) and Lr37/Sr38/Yr17/Cre5/Rkn3 (from Aegilops ventricosa Tausch) attract the attention of bread wheat breeders by their resistance to leaf and stem rust pathogens, as well as a positive effect on agronomical important traits. However, the combination of these translocations is poorly understood. In the presented study, agronomic performance these translocations were studied on a spring bread wheat line L42= Dobrynya/Trident*3//Dobrynya during 2017-2021. The presence of a combination of Lr19/Sr25 and Lr37/Sr38 genes in 7DS-7DL-7Ae#1L and 2AL-2AS-2mV#1 translocations was found in the L42 line with the help of DNA markers - Gb and VENTRIUP-LN2. This combination of translocations determines the resistance to the saratov population of leaf and stem rust pathogens, and also has a differentiated reaction to the pathotypes of these pathogens from other regions of Russia. It was revealed that in the L42 line, the germination - heading period, on average over the years of study, was significantly shorter than that of the standard cultivar Favorit, but did not significantly differ in this trait from the cultivar-recipient Dobrynya. The L42 line did not significantly differ from the Favorit and Dobrynya cultivars in terms of plant height and lodging resistance. By weight of 1000 grains, the L42 line significantly exceeded the Favorite cultivar, but was inferior to the Dobrynya cultivar. In terms of grain productivity on average for 2017-2022, the L42 line was inferior to the Favorit and Dobrynya cultivars, but significantly only to the latter. The study of the L42 line in terms of the quality of flour and bread showed that it was significantly inferior in terms of the gluten content than Dobrynya cultivar, but not significantly superior to the Favorite cultivar. According to SDS indicators, the gluten strength according to the units of the IDK-3 device, the elasticity of the dough (P), the L42 line significantly differed only from the Favorit cultivar, and did not differ from the Dobrynya cultivar. There were no differences between the cultivar and L42 for the ratio of the elasticity of the dough to the extensibility (P/L). In terms of the strength of flour (W) and the volume of bread, the L42 line was significantly superior to the standard Favorite cultivar, but significantly inferior to the cultivar-recipient Dobrynya. There were no significant differences between the L42 line and the Favorite and Dobrynya cultivar, according to the porosity of bread.
Databáze: OpenAIRE
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