Characterization and early detection of tan spot disease in wheat in vivo with chlorophyll fluorescence imaging

Plant growth is affected by various factors. The resistance of the plant to withstand various biotic and abiotic stress factors plays a vital role for its growth and development. In this study, we have characterized the resistance of various wheat cultivars to tan spot disease by the application of imaging techniques (such as: digital photography, chlorophyll fluorescence) under controlled conditions. The increase of the F0 chlorophyll fluorescence indicates the production of free chlorophylls, which may be involved in the defense reaction against the pathogen. The fluorescence data revealed changes of the photosynthetic apparatus at an early stage before the appearance of visual symptoms appeared, which could be used as an easily measurable markers of the infection

Effect of copper on shoot and root regeneration in wheat, triticale, rape and tobacco tissue cultures

CuSO4 (0.1-100 mu M) significantly enhanced shoot regeneration from calli of wheat and triticale and of tobacco leaf disc cultures. In cultures of wheat and triticale, CuSO4 also stimulated root formation. When equal concentrations of CuSO4 were applied in different media, it was found that the components of the basal media had only modifying effects. CuSO4 pretreatment promoted plant survival when regenerated wheat plants were transferred directly to potting soil. In contrast with CuSO4, AgNO3, which also stimulated shoot regeneration, inhibited rooting in wheat and triticale. In Brassica napus callus cultures, AgNO3 strongly increased morphogenesis, whereas CuSO4 had no significant effect

Stripe rust reaction and yield response of winter cereals in bio - versus conventional farming

In 2014, was an extremely early and heavy yellow rust (Puccinia striiformis var. striiformis) epidemic in Hungary. Significant differences were among locations, years and genotypes in the severity of infection. Ratio of the resistant and moderately resistant genotypes was higher under bio environment. The yellow rust epidemic caused significant yield decreasing in the tested winter cereals

Fertile wheat (Triticum aestivum L.) regenerants from protoplasts of embryogenic suspension culture

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