2. Articole

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Start date: 2024Subject: search.filters.subject.seeds

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    The role of the flag leaf in the formation of the yield of winter wheat plants (Triticum aestivum L.) grown from seeds treated with the biostimulant reglalg [Articol]
    (CEP USM, 2025) Platcovschii, Nicolai; Dascaliuc, Alexandru
    The effect of treating seeds of hexaploid wheat Moldova 5, Missia and Kuyalnik with the biostimulator (BS) Reglagl on the activity of the flag leaf photosystem II (PS-2) and the yield during the period of formation and ripening of grain in the ear was studied. The experiments were conducted during 2015 -2018 at the Experimental Field of the Institute of Genetics, Physiology and Plant Protection, MSU. The duration of the grain formation and maturation phases in Moldova 5 plants was 26 days, and in Missia and Kuialnik plants - 33 days. The application of BS Reglagl contributed to extending the duration of grain formation and maturation by 1-3 days. In the control variants, the harvest was 3.76 - 4.20 t/h, and in the experimental ones - 3.81 - 4.73 t/h. The efficiency of seed treatment with BS Reglagl varied depending on the variety and the climatic conditions of the year.
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    Effect of X-ray radiation on the viability of European beech seeds
    (CEP USM, 2024-10-07) Elisovetcaia, Dina; Ivanova, Raisa; Fedorenco, Elena
    Fagus sylvatica seeds from the "Plaiul Fagului" Natural Reserve, Republic of Moldova (PF-23) were treated in peeled (without pericarp) and unpeeled (with pericarp) form with X-ray doses from 25 to 425 Gy. No linear dependence of the viability of both peeled and unpeeled seeds on the radiation dose was established using the hydrogen peroxide test (HP). The use of the Indigo-carmine test (IC) made it possible to reveal a linear dependence of the viability of beech seeds (with pericarp) on the irradiation dose of X-rays. X-ray treatment in doses from 50 to 300 Gy reduced seed viability in the range from 39.53 to 48.84% (limit 50%); X-rays treatment above 600 Gy reduced seed viability by 67.44% or more.