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633.111:575 (3) |
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Общая генетика. Общая цитогенетика. Иммуногенетика. Эволюционное учение. Видообразование. Филогенез (430) |
![]() SAŞCO, Elena. Efectele genetice implicate în răspunsul grăului comun la filtratul de cultură Drechslera sorokiniana (SACC.) subram. In: Genetica, fiziologia şi ameliorarea plantelor, Ed. 7 , 4-5 octombrie 2021, Chişinău. Chişinău: "Print-Caro" SRL, 2021, Ediția 7, pp. 272-275. ISBN 978-9975-56-912-5. DOI: https://doi.org/10.53040/gppb7.2021.71 |
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Genetica, fiziologia şi ameliorarea plantelor Ediția 7, 2021 |
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Conferința "Genetica, fiziologia şi ameliorarea plantelor" 7 , Chişinău, Moldova, 4-5 octombrie 2021 | |||||||
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DOI:https://doi.org/10.53040/gppb7.2021.71 | |||||||
CZU: 633.111:575 | |||||||
Pag. 272-275 | |||||||
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Rezumat | |||||||
Helminthosporiosis caused by the fungus Drechslera sorokiniana (Sacc.) causes significant crop and quality losses to Triticum aestivum L. in agroecological conditions with extreme humidity. Increasing the resistance is considered the most cost-effective and sustainable approach to disease control. The aim of this study was to determine the genetic effects involved in the inheritance of resistance, using the ge-netic model of character reproduction in descendants of wheat. Generations F1, F2, BCP1 and BCP2, de-scended from the mutual crossing of the parents Basarabeanca / Moldova 30 and Moldova 30 / Moldova 3 (P1 and P2) were evaluated for the response of callus characters to the action of D. sorokiniana culture filtrate on the medium Murashige Skoog. Fungal metabolites have decreased the effects of gene actions and epistatic interactions, but also their variance. The phenomenon corresponds to the decrease of callus indices. A great importance for the heredity of the character of the surface of the callus manifested the epistatic effects of additive-dominant (ad) type. In the case of callus biomass comparable to the mean val-ues were the a actions, but also the ad and dd epistatic effects. The predominant involvement of epistatic effects indicates the need for resistance selections to helminthosporiosis in late generations of wheat. |
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Cuvinte-cheie Triticum aestivum L., heritability, gene effects, F1 and F2 hybrid, reciprocal hybrids, Drechslera sorokiniana culture filtrate, frequency of callus, callus surface area and biomass. |
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