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Journal of Botany MINISTRY OF EDUCATION, CULTURE AND RESERCH "ALEXANDRU CIUBOTARU" NATIONAL BOTANICAL GARDEN (INSTITUTE) JOURNAL OF BOTANY VOL. X NR. 2 (17) Chisinau, 2018 2 JOURNAL OF BOTANY VOL. X, NR. 2 (17), 2018 FOUNDER OF THE “JOURNAL OF BOTANY”: "ALEXANDRU CIUBOTARU" NATIONAL BOTANICAL GARDEN (INSTITUTE) According to the decision of Supreme Council for Sciences and Technological Development of ASM and National Council for Accreditation and Attestation, nr. 169 of 21.12.2017 on the approval of the assessment and Classification of scientific journals, “Journal of Botany” was granted the status of scientific publication of “C” Category. EDITORIAL BOARD OF THE “JOURNAL OF BOTANY” Teleuță Alexandru, Ph. D., editor – in- chef, National Botanical Garden (Institute) Roșca Ion, Ph. D., associate editor, National Botanical Garden (Institute) Cutcovschi-Muștuc Alina, Ph. D., secretary, National Botanical Garden (Institute) Members: Duca Gheorghe, academician of the ASM, President of the Academy of Science of Moldova Bucațel Vasile, Ph. D., National Botanical Garden (Institute) Ciorchină Nina, Ph. D., National Botanical Garden (Institute) Comanici Ion, university professor, National Botanical Garden (Institute) Colțun Maricica, Ph. D., National Botanical Garden (Institute) Cristea Vasile, university professor, Botanical Garden „Alexandru Borza” of the „Babeș-Bolyai” University, Cluj-Napoca, România Dediu Ion, corresponding member of the ASM, Institute of Geography and Ecology of the ASM Ghendov Veaceslav, Ph. D., National Botanical Garden (Institute) Grati Vasile, university professor, Tiraspol State University Lech Wojciech Szajdak, Proff Dr. hab., Institute for Agricultural and Forest Environment, Polish Academy of Sciences Manic Ștefan, Dr. hab., National Botanical Garden (Institute) Palancean Alexei, Dr. hab., National Botanical Garden (Institute) Postolache Gheorghe, Dr. hab., National Botanical Garden (Institute) Sârbu Anca, university professor, Botanical Garden „D. Brîndza”, Bucharest, România Șalaru Victor, university professor, Moldova State University Sîrbu Tatiana, Ph. D.,National Botanical Garden (Institute) Tănase Cătălin, university professor, Botanical Garden „A. Fătu” of the „Al. I. Cuza” University, Iași, România Toma Constantin, academician of the Romanian Academi university professor, „Al. I. Cuza” University, Iași, România Țîmbalî Valentina, Ph. D., National Botanical Garden (Institute) Zaimenco Natalia, university professor, „M.M. Grishko” National Botanical Garden of National Academy of Science of Ukraine Edition supported by the National Botanical Garden (Institute) MD – 2002, Padurii str. 18, Chisinau, Republic of Moldova tel./fax: (+373 22) 52-38-98; 55-04-43 www.gradinabotanica.asm.md e-mail: [email protected] JOURNAL OF BOTANY VOL. X, NR. 2 (17), 2018 3 CONTENTS I. Structural and functional diversity of plant organisms 1. Cuza P. The use of experimental botanical methods to determine the resistance of pedunculate oak and downy oak to heat stress ............................................................................ 5 2. Trofim M., Ciorchină N., Mîrza Al., Tabăra M. The influence of external factors on the development of in vitro cultured blackberry pants under ex vitro conditions ............................... 14 II. Conservation of biological diversity 3. Cantemir V. The genus Myosotis L. (Boraginaceae Juss.) in the flora of Bessarabia .................. 21 4. Manic Șt. The family Boletaceae in the mycobiota of the Republic of Moldova................... 27 5. Pînzaru P., Cantemir V. Floristic notes in Bessarabia no. 165-200 ......................................... 32 6. Tofan-Dorofeev E. The economic value of Rosoideae (Rosaceae Adans.) from the flora of the Republic of Moldova .................................................................................................................. 42 III. Introduction of plants and sustainable use of plant resources 7. Mîrza Al. The agrotechnics of the cultivation of hybrid berries ............................................ 46 8. Sfeclă I. Fenoritmica unor knifofii (Kniphofia Moench.) în condițiile Republicii Moldova .... 51 9. Soloshenko V. Taxonomic composition of the Ribes L. in the collecting plantations in Ukrainian botanic institutions ........................................................................................................ 64 10. Țîmbalî V. The introduction of the representatives of the genusBegonia L. (Fam. Begoniaceae C. A. Agardh) in the greenhouses of the “Alexandru Ciubotaru” National Botanical Garden (Institute) ....................................................................................................... 69 11. Ţîmbalî V., Toderaş N., Harea D., Rogacico S. Introduction of succulent plants in the “Alexandru Ciubotaru” National Botanical Garden (Institute) .......................................................................... 72 IV. Landscape architecture, ecological education 12. Cojocaru O. Actual concerns in the adoption of sustainable agricultural systems in the central plateau from Republic of Moldova ................................................................................... 80 13. Doiko N.M., Drahan N.V., Mordatenko I.L. The vegetation of historically landscaped areas plain beam type in the dendrological park „Alexandria” NAS of Ukraine ............................... 85 14. Dica A., Sfeclă I. Şabarov D., Slivca V. The analysis of flower markets in Chisinau................ 90 15. Ursul S.Trasee de observare a păsărilor în rezervaţia cultural-naturală „Orheiul Vechi”.... 95 16. Scobioală E. Turismul și ariile protejate din SUA......................................................................... 100 4 JOURNAL OF BOTANY VOL. X, NR. 2 (17), 2018 Scientific chronic 17. Sfeclă I., Țîmbalî V., Roșca I. An aniversar pentru doamna doctor Tatiana Sîrbu ...................... 103 18 Comanici I., Roşca I. Dendrologul Vasile Bucaţel la cea de-a 60-a aniversare ......................... 105 19. Roșca I. Laudatio Ion Toderaș ........................................................................................................ 107 20. Roșca I. Doctorul habilitat, profesorul Gheorghe Postolache. Lauriat al Premiului Academiei de Științe a Moldovei în Domeniul Biologie și Ecologie "Alexandru Ciubotaru" ........................................................................................................................................ 108 In memoriam Comanici I. Academicianul Vladimir A. Rîbin – 125 ani de la naştere ................................................... 110 Cantemir V., Manic Şt., Pînzaru P. Botanistul Afanasie Istrati - 80 ani de la naştere ............................ 114 JOURNAL OF BOTANY VOL. X, NR. 2 (17), 2018 5 I. STRUCTURAL AND FUNCTIONAL DIVERSITY OF PLANT ORGANISMS CZU: 631.524.85 : 582.632.2(478) THE USE OF EXPERIMENTAL BOTANICAL METHODS TO DETERMINE THE RESISTANCE OF PEDUNCULATE OAK AND DOWNY OAK TO HEAT STRESS Petru Cuza Moldova State University Abstract. The leaves of pedunculate oak (Quercus robur L.) and downy oak (Q. pubescens Willd.) were subjected to heat shock at various high temperatures. The damage caused by the heat shock to the cellular structures of the leaves was determined using the electrolyte leakage technique. In the investigated species, it was observed a sigmoidal increase of the electrolyte leakage from leaf tissues, depending on the applied temperatures. Downy oak leaves, as compared with pedunculate oak leaves, have shown increased resistance to high temperatures, suggesting that heat tolerance in downy oak is higher than in pedunculate oak. The obtained results have shown that the electrolyte leakage method can be successfully applied to determine the differences in the heat tolerance in plant species that grow under different environmental conditions, but also those that grow in similar environmental conditions. The experiments on heat shock fractionation allowed the estimation of the effect of the value of the first dose on the induction of the adaptive capacity of the pedunculate oak leaves after different periods from its application. The state of the leaves depended on three components that characterized the fractionation effect: the value of the first part of the heat dose (1), the value of the second part of the heat dose (2), the length of the period between the two heat doses (3). The summary effect of the heat dose fractionation results from the balance between the damage processes and the recovery processes. Following the treatment with moderate doses of heat shock, the processes of induction of adaptation dominated, which led to an increase in the heat tolerance of leaves after the application of the first heat dose. After the application of the high doses, degradation processes prevailed over recovery and adaptation, which led to a decrease in the heat tolerance of leaves. The obtained results suggest that the method of heat shock fractionation allows the estimation of the initial heat tolerance and the adaptability of leaves. The specific manifestation of the processes that control the initial and adaptive heat tolerance, due to variations in seasonal temperatures, determines the survival of plants in arid conditions. Key words: Quercus robur, Q. pubescens, leaves, electrolyte leakage, heat tolerance. INTRODUCTION In the course of evolution, plants have adapted, through various genetic and physiological mechanisms, to specific environmental conditions of the habitat they live in [1]. Plant species are not spread on Earth sporadically and randomly,
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