Cold-hardening of winter triticale (X Triticosecale Wittm.) results in increased resistance to pink snow mould Microdochium nivale (Fr., Samuels and Hallett) and genotype-dependent chlorophyll fluorescence modulations

• Autorzy: Golebiowska G. , Wedzony M.
• Języki publikacji: EN

Abstrakty

EN

The resistance of triticale (x Triticosecale Wittm.) to infection of snow mould Microdochium nivale (Fr., Samuels & Hallett) was examined under different temperature pre-treatment regimes. The results of laboratory ‘‘cold chamber’’ resistance tests correlated with the breeders’ report from field experiments. Studied genotypes differed substantially in their resistance to infection. Two cultivars: ‘Magnat’ (susceptible) and ‘Hewo’ (relatively resistant) were further studied as a plant model to test the role of pre-hardening and cold-hardening induction of resistance expression. Both model cultivars were susceptible to M. nivale infection without cold pre-treatment and gained genotype-depended level of resistance after 4 weeks treatment at 4°C, moreover the resistance grew gradually. Simultaneously to the resistance tests, the measurements of chlorophyll fluorescence parameters were taken. The results showed that higher vitality index Rfd of coldhardened triticale seedlings correlated with increased pink snow mould resistance while differences in other parameters of fluorescence were not distinctly significant. Establishment of Rfd in 4 weeks hardened triticale seedlings could be used for a large scale screening of breeding material in order to select potentially resistant genotypes. Such analyses have not been reported for triticale before.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2009
• Tom: 31
• Numer: 6
• Opis fizyczny: p.1219-1227,fig.,ref.

Twórcy

autor

Golebiowska G.

• Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland
• Pedagogical University of Krakow, Podchorazych 2, 30-084 Krakow, Poland

autor

Wedzony M.

• Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland
• Pedagogical University of Krakow, Podchorazych 2, 30-084 Krakow, Poland

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