Institutul de Genetică, Fiziologie şi Protecţie a Plantelor

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Subject: search.filters.subject.maize seeds

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    Chlorophyll index in maize plants grown from seeds treated with reglalg and hypothermic shock
    (CEP USM, 2024) Caus, Maria
    The article presents the results of studies of the influence of the use of the biostimulator Reglalg and negative temperature stress (NTS) on the chlorophyll index of maize plants grown in field conditions at the experimental area of the Institute of Genetics, Physiology & Plant Protection, MSU. Growing maize from seeds treated before sowing with Reglalg and then subjected to temperature treatment at -4°C for 16 hours showed that the use of Reglalg reduces the negative effect of NTS and contributes to an increase in the chlorophyll index of leaves in the early period of plant growth.
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    EVALUAREA REZISTENȚEI DIFERITOR HIBRIZI DE PORUMB LA STRESUL DE TEMPERATURĂ NEGATIVĂ ÎN STADIU DE GERMINARE A SEMINȚELOR
    (CEP USM, 2024) Cauș, Maria; Borozan, Panteleimon
    The main objective of the study was to determine the constitutive resistance of 14maize hybrids to negative temperature stress. To achieve the proposed objective, the seedsf the experimental variants were exposed to hypothermic stress, being incubated at negative temperature of -4°C for 16 hours in the climatic chamber RUMED TYPE 3401 (RFG) with the accuracy of maintaining the temperature ± 0.1ºC. At the same time, control seeds were incubated at a temperature of +4°C. Then control and experimental seeds were germinated at an optimal temperature of +26°C for 5 days, followed by determination of the final percentage of germinaton. Pretreatment of maize seeds with negative temperature stress made it possible to identify and evaluate the primary stress resistance of each hybrid. Depending on the degree of constitutive frost resistance of each hybrid, the distribution and classification of the studied hybrids into 3 groups was carried out, including hybrids with high, medium and low frost resistance.