Lesnoy Vestnik / Forestry BulletinLesnoy Vestnik / Forestry BulletinЛесной вестник / Forestry Bulletin2542-1468Eco-Vector70646510.18698/2542-1468-2025-3-5-16Biological and technological aspects of forestryБиологические и технологические аспекты лесного хозяйстваResearch ArticleComparative assessment of pigment composition in Karelian birch (Betula pendula var. carelica Merckl.) and Silver birch (Betula pendula Roth) leavesСравнительная оценка пигментного состава листьев березы карельской (Betula pendula var. carelica Merckl.) и березы повислой (Betula pendula Roth)BesschetnovaNatal’ya N.БессчетноваНаталья Николаевна
Russian Federation

Dr. Sci. (Agriculture), Associate Professor, Dean of the Faculty of Forestry

д-р с.-х. наук, доцент, декан факультета лесного хозяйства

besschetnova1966@mail.ruBesschetnovVladimir P.БессчетновВладимир Петрович
Russian Federation

Dr. Sci. (Biology), Professor, Head of the Department of Forest Crops

д-р биол. наук, профессор, зав. кафедрой лесных культур

lesfak@bk.ruBabayevRamis N.БабаевРамис Натигович
Russian Federation

Cand. Sci. (Agriculture), Deputy Director General of the Union of Forest Owners

кандидат с.-х. наук, заместитель генерального директора

lp-ram17@yandex.ruBabayevArtem N.БабаевАртем Натигович
Russian Federation

Consultant of the Forest Protection Sector

консультант сектора защиты леса

beedoed@mail.ruNizhny Novgorod State Agrotechnological University named after L.Y. FlorentyevФГБОУ ВО «Нижегородский государственный агротехнологический университет имени Л.Я. Флорентьева»Union of Forest Owners of the Nizhny Novgorod regionСоюз лесовладельцев Нижегородской областиMinistry of Forestry and Protection of Wildlife of the Nizhny Novgorod regionМинистерство лесного хозяйства и охраны объектов животного мира Нижегородской области150620252935162004202620042026Copyright ©; 2025, Besschetnova N.N., Besschetnov V.P., Babayev R.N., Babayev A.N.Copyright ©; 2025, Бессчетнова Н.Н., Бессчетнов В.П., Бабаев Р.Н., Бабаев А.Н.2025Besschetnova N.N., Besschetnov V.P., Babayev R.N., Babayev A.N.Бессчетнова Н.Н., Бессчетнов В.П., Бабаев Р.Н., Бабаев А.Н.https://creativecommons.org/licenses/by/4.0https://journals.eco-vector.com/2542-1468/article/view/706465

The pigment composition in the leaves of two Birch (Betula L.) congeners, namely Silver birch (Betula pendula Roth) and Karelian birch (Betula pendula var. carelica Merckl.), have been studied. The principle of the only logical difference is observed, as well as the basic requirements for its formulation during experiments. Field full-scale methods of collecting the source material from the fixation of morphometric parameters of the leaf apparatus in the laboratory were applied. It was found that the average values of each studied plant have minor differences in the total pigment content, they are for Karelian birch 2,346 ± 0,04 mg/g and for Silver birch 2,508 ± 0,04 mg/g. A slight advantage of the content of plastid pigments in the native species relative to the introduced one was noted. The predominance of chlorophyll b over chlorophyll a was found in both plants, which in turn is explained by the high density of crown closure in plantations of natural and artificial origin. The differences between the studied representatives of the genus birch in the content and ratio of plastid pigments were recorded and their significance was confirmed by the results of two-factor dispersion analysis. There was a significant influence of differences in the affiliation of the compared samples to the typical form and variety of birch with decorative wood texture on the formation of phenotypic variability, which reached 15,33 ± 0,47 % (according to the Plokhinsky method) and 21,92 ± 0,43 % (according to the Snedekor algorithm). It is proved that the phenotypic differences of the studied genus birch in the content and ratio of plastid pigments are genotypically determined and justified by the fact of their close growth against the background of homogeneous forest conditions. At the same time, there is a strong influence of unorganized factors, which in some cases were predominant and reached 59,86 %.

Представлены результаты исследования пигментного состава листьев представителей рода Береза (Betula L.): березы повислой (Betula pendula Roth) и березы карельской (Betula pendula var. carelica Merckl.). Установлены незначительные различия средних значений суммарного содержания пигментов каждого исследованного растения. Выявлено незначительное преимущество содержания пластидных пигментов у аборигенного вида по сравнению с интродуцированным. Определено преобладание хлорофилла b над хлорофиллом a у обоих растений. Зафиксированы различия изученных представителей рода Береза по содержанию и соотношению пластидных пигментов, подтверждена их существенность. Отмечено достоверное влияние различий в принадлежности сравниваемых образцов к типичной форме и разновидности березы с декоративной текстурой древесины на формирование фенотипической изменчивости. Доказаны обусловленность генотипическая фенотипических различий изученных представителей рода Береза по содержанию и соотношению пластидных пигментов и фактическая обоснованность их близкого произрастания в однородных лесных условиях. Указано сильное влияние неорганизованных факторов, иногда имеющих преобладающий характер.

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