Mohammad Reza Amirjani

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Drought stress is considered as an effective parameter in decreasing crop production. Present study was investigated to understand the effect of drought stress on wheat (Triticum aestivum) seedlings under controlled condition. The seeds of wheat were subjected to five levels of water potential. 0 MPa (as control) and -2, -4, -6 and -8 MPa (as treatments)(More)
Dark-grown leaves of three different species, maize, wheat, pea and a pea mutant (lip1) have been used to study protochlorophyllide (Pchlide) spectral forms. As a comparison also pea epicotyls were used. Different native forms of Pchlide were identified using the variation in the spectral properties of the plant material and the second derivatives of the 77(More)
Dark-grown leaves of maize (Zea mays), wheat (Triticum aestivum), wild-type pea (Pisum sativum) and its light-independent photomorphogenesis mutant (lip1) have different proportions of protochlorophyllide (Pchlide) forms as revealed by low-temperature fluorescence emission spectra. Four discrete spectral forms of Pchlide, with emission peaks around 633,(More)
Abstract: This study summarized recent results on POR and plastid development in order to find an explanation for the existence of Pchlide spectral forms. This review has summarized many researches about the Pchlide spectral forms and their phototransformability in different higher plants which have been published. Chlorophyll (Chl) is the most important(More)
Etiolated leaves of three different species, maize, wheat, and pea, as well as a pea mutant (lip1) were used to compare the excitation spectra of protochlorophyllide (Pchlide) in the red region. The species used have different composition of short-wavelength and long-wavelength Pchlide forms. The relation between different forms was furthermore changed(More)
In the present investigation Catharanthus roseus, an important herb used in traditional as well as modern medicine, exposed to water deficit stress and possible changes in chlorophyll contents, photosynthesis rate, transpiration rate, growth parameters as well as total alkaloid content and vincristine and vinblastine levels were studied. Seedlings subjected(More)
In this study the effect of responses of Catharanthus roseus to NaCl stress has been explored. Periwinkle plants were exposed to different concentrations of salt and the effect of treatment on germination, growth parameter and antioxidative defense system investigated. Seeds were presoaked in solutions with different salinity after sterilization.(More)
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