Article 3315

Title of the article

FEATURES PADUS RACEMOSA L. PLANTS ADAPTATION IN DIFFERENT CLIMATIC CONDITIONS 

Authors

Kuznetsova Tat'yana Alekseevna, Candidate of biological sciences, associate professor, sub-department of chemistry and biotechnology, Saint-Petersburg State University of Trade and Economics (50 Novorossiyskaya street, Saint-Petersburg, Russia), tano_lovely@mail.ru
Sorokopudov Vladimir Nikolaevich, Doctor of agricultural sciences, professor, All-Russian Selection-Technological Institute of Horticulture and Nursery (4 Zagoryevskaya street, Moscow, Russia), sorokopudov2015@yandex.ru
Yushin Yuriy Vladimirovich, Senior lecturer, Belgorod State Agricultural University named after V. Y. Gorin (26 Kirova street, Maisky village, Belgorod region, Russia), sorokopudov2015@yandex.ru

Index UDK

58.056; 581.821

Abstract

Background. Comparison of anatomical parameters and the water regime of plants in different climatic conditions reveals mechanisms of plant adaptation to drought. The purpose of the article is to identify anatomical and physiological parameters of drought resistance of Padus racemosa L. Xeromorphic signs allow to identify the most drought-resistant varieties and species of plants that can be used in selection. This contributes to maintaining yields in areas with dry vegetation periods.
Materials and methods. The objects of study were Padus racemosa plants (2001), plantings that grow in gardens of Belgorod and in the parkland of Saint-Petersburg. The authors investigated leaves that were collected from annual increment, taking into account the age of plants and the morphological address at flowering phenophases. The study of the epidermis was conducted using a Levenhuk 320 light microscope, a Levenhuk C310 NG video camera, A MOB-1-15×У4,2 eyepiece micrometer, a Quanta 200 3D scanning electron microscope. The researchers counted the number of stomata per surface unit of the epidermis, calculated the degree of openness of the stomata (%) and the coefficient of tortuosity of anticlinal walls, determined the main area of the epidermal cells and stomata. Investigation of the water regime was carried out according to the procedure of the Nikitsky botanical garden.
Results. In drought conditions in Belgorod, leaves are formed with a larger percentage of bound water, than in conditions of excessive moisture in St. Petersburg. In terms of Belgorod, leaves have xeromorphic signs such as thickened cuticular layers, the epidermis, a greater number of stomata, the coefficient of tortuosity of anticlinal walls. In St. Petersburg great losses of moisture in the six-hour wilting are caused by papilliform outgrowths from the main cells of the epidermis.
Conclusions. The study allowed to reveal the most informative xeromorphic signs of leaf tissues, which makes it possible to find ways to adapt plants to a lack of moisture.

Key words

Padus racemosa (Ehrh.) Agardh., adaptation, epidermis, stomata, water scarcity, water content, transpiration, gas exchange.

Download PDF
References

1. Antsiferov A. V. Khozyaystvenno-biologicheskaya otsenka sortov i otbornykh form cheremukhi v usloviyakh Tsentral'no-chernozemnogo regiona: avtoref. dis. kand. s.-kh. nauk [Economic and biological assessment of breeds and choice varieties of bird cherry in conditions of the Central chernozem zone: author’s abstract of dissertation to apply for the degree of the candidate of agricultural sciences]. Michurinsk, 2004, 26 p.
2. Rezanova T. A., Bezmenova M. D., Sorokopudov V. N. Nauchnye vedomosti Belgorodskogo gosudarstvennogo universiteta. Estestvennye nauki [Scientific bulletin of Belgorod State University. Natural sciences]. 2010, iss. 12, no. 15 (86), pp. 66–72.
3. Kuznetsova T. A. Nauchnye vedomosti BelGU. Ser. Estestvennye nauki [Scientific bulletin of Belgorod State University. Natural sciences]. 2015, iss. 31, no. 9 (206), pp. 29–37.
4. Men'shakova M. Yu. Ontogenez i izmenchivost' anatomicheskoy struktury list'ev vidov semeystva Ericaceae juss. v raznykh ekosistemakh boreal'noy zony i subarktiki: avtoref. dis. kand. biol. nauk [Ontogeny and variability of the anatomic structure of Ericaceae juss. species in various ecosystems of the boreal region and the subarctic: author’s abstract of dissertation to apply for the degree of the candidate of biological sciences]. Petrozavodsk, 2006, 21 p.
5. Patent 2455818 Russian Federation, MPK A01P7/00. Sposob otsenki funktsional'noy aktivnosti pel'tatnykh zhelezok [Method of assessment of functional activity of peltate glandules]. Sorokopudov V. N., Kuznetsova T. A., Chekanov N. A., Burmenko Yu. N.; appl. and patentee Belgorod State University. No. 2010154009/13, bull. no. 20, 12 p.
6. Vasil'ev B. R. Stroenie lista drevesnykh rasteniy razlichnykh klimaticheskikh zon [Ligneous plants’ leaf structure in various climatic zones]. Leningrad: Izd-vo Leningradskogo universiteta, 1988, 208 p.
7. Sytnik K. M., Musatenko L. I., Bogdanova T. L. Fiziologiya lista [Leaf physiology]. Kiev:Naukova dumka, 1978, 392 p.

 

Дата создания: 19.01.2016 15:26
Дата обновления: 26.01.2016 13:55