Application of the Spores of the Entomopathogenic Fungus Lecanicillium Muscarium for Control of Adelgids on Conifers in the Peter the Great Botanical Garden

This article discusses the possibility of using the entomopathogenic fungus Lecanicillium muscarium R. Zare & W. Gams (Ascomycota: Hypocreales) against the fir adelgid Adelges pectinatae pectinatae (Cholodkovsky, 1888) and Siberian cedar adelgid Pineus cembrae (Cholodkovsky, 1888) on the Siberian fir Abies sibirica Ledeb., and pines Pinus sibirica Du Tour and Pinus banksiana Lamb. The blastospores of the entomopathogenic fungus L. muscarium strain G-033 VIZR, in the concentration of 5x107 spores/ml, showed a high efficiency on both of the species of adelgid. On the 17th day, the mortality of P. cembrae was 73% on P. sibirica and 61% on P. banksiana, and the mortality of the species A. pectinatae pectinatae on A. sibirica was 74%. The effect of the spore application had a prolonged effect over the next month on all treated trees. Keywords: entomopathogenic fungi, Lecanicillium muscarium, adelgid, conifers

Download Full-text

Field test of the spores of entomopathogenic fungi Lecanicillium muscarium against Adelges on conifers of the Botanical Garden of Peter the Great

Международная научно-практическая конференция «РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ» ◽

10.33952/2542-0720-15.05.2020.06 ◽

2020 ◽

Author(s):

E.A. Varfolomeeva ◽

◽

G.V. Mitina ◽

A.A. Choglokova ◽

◽

...

Keyword(s):

Field Test ◽

Entomopathogenic Fungi ◽

Pinus Banksiana ◽

High Efficiency ◽

Botanical Garden ◽

Pinus Sibirica ◽

Chemical Insecticide ◽

Peter The Great ◽

Prolonged Effect ◽

Chemical Pesticides

Adelgids are dangerous sucking pests of the conifers. Adelges pectinatae pectinatae and Pineus cembrae (Cholodkovsky, 1888) are noted throughout the Botanical Garden of Peter the Great on the conifers Abies sibirica, Pinus sibirica, and Pinus Banksiana. The application of entomopathogenic fungi that can penetrate into the galls of adelgids allows decreasing the usage of the chemical pesticides. Strain G-033 VIZR, which is effective against sucking insects and mites, was examined. Conifers infected by the adelgids were sprayed with the blastospore suspension (titer – 5x107 spores/ml). The number of Adelges galls was counted before treatment and weekly for a month. The effectiveness of spores on the 7th and 10th day was 20-44 %; the effectiveness of the chemical insecticide Actara was 52-99 %. By the end of the observations, the effectiveness of the biolpesticide reached 92-98% at all species of trees and was at the level of the chemical reference. The effect of the application of spores was registered over the next month. The ability of L. muscarium to cause mycosis was proved by isolating strain G-033 VIZR from the galls of Adelges infected by fungus. The strain G-033 VIZR of L. muscarium showed high efficiency and a prolonged effect on the Adelgids population of two species A. pectinatae pectinatae and P. cembrae.

Download Full-text

To the creation of the exhibition of Altai flora in the Polar-Alpine Botanical Garden

Bulletin of the State Nikitsky Botanical Gardens ◽

10.36305/0513-1634-2020-137-84-93 ◽

2020 ◽

pp. 84-93

Author(s):

S. I. Yudin

Keyword(s):

Botanical Garden ◽

Plant Introduction ◽

Northern Taiga ◽

Ex Situ ◽

Seasonal Development ◽

High Mountain ◽

Pinus Sibirica ◽

Altai Mountains ◽

Introduced Plants ◽

Pinus Sibirica Du Tour

The preconditions for creating an exposition on the botanical and geographical site "Altai" of the Polar-Alpine Botanical Garden of the KSC RAS, represented by cenotic elements characteristic of the forests of the Altai mountains: dark-coniferous, light-coniferous and black taiga. Such expositions in botanical gardens are one of the forms of preserving the biodiversity of introduced plants ex situ. The condition, structure, species composition of the created plantings for this period - the completion of the first stage of work ("Creating a tree tier") is described. Preliminary results of plant introduction the main tree species ( Abies sibirica Ledeb., Picea obovata Ledeb., Larix sibirica Ledeb., Pinus sibirica Du Tour, Pinus sylvestris L., Tilia cordata Mill ., Populus tremula L.) forests of the Altai mountains. The condition of coniferous plants is characterized as normal: they show climate and soil resilience, have a natural rhythm of development here, go through all stages and phases of ontomorphogenesis. A comparative analysis of the rhythms of seasonal development of plants of herbaceous species characteristic of the most contrasting ecotypes of the Altai mountains (foothill and high-mountain) showed that the conditions of the Northern taiga of the Khibiny mountains of the Kola Peninsula are more consistent with plants of high-altitude habitats (high-mountain ecotype). Features of growth and development of plants of Altai species ex situ indicate successful adaptation of most of these species to the conditions of the Kola Arctic.

Download Full-text

Comparative characteristics and germination of Pinus sibirica seeds collected from places of natural growth and in the St. Petersburg Botanical garden of Peter the Great

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/316/1/012017 ◽

2019 ◽

Vol 316 ◽

pp. 012017

Author(s):

A Karamysheva ◽

L Trofimuk ◽

N Priyatkin ◽

M Arkhipov ◽

P Sshukina

Keyword(s):

Botanical Garden ◽

Pinus Sibirica ◽

Natural Growth ◽

Peter The Great

Download Full-text

Distribution of the genetic diversity of the Siberian stone pine, Pinus sibirica Du Tour, along the latitudinal and longitudinal profiles

Russian Journal of Genetics ◽

10.1134/s102279541405010x ◽

2014 ◽

Vol 50 (5) ◽

pp. 467-482 ◽

Cited By ~ 5

Author(s):

E. A. Petrova ◽

S. N. Goroshkevich ◽

M. M. Belokon ◽

Yu. S. Belokon ◽

D. V. Politov

Keyword(s):

Genetic Diversity ◽

Pinus Sibirica ◽

Stone Pine ◽

Siberian Stone Pine ◽

Siberian Stone ◽

Longitudinal Profiles ◽

Pinus Sibirica Du Tour

Download Full-text

Формирование кроны кедра сибирского за 12-летний период после декапитации (пригородная зона г. Красноярска)

Наукові праці Лісівничої академії наук України ◽

10.15421/412107 ◽

2021 ◽

pp. 89-97

Author(s):

Dmitriy Grishlov ◽

Natalia Bratilova ◽

Rimma Matveeva ◽

Olga Butorova

Keyword(s):

Pinus Sibirica ◽

Pinus Sibirica Du Tour

Показаны особенности формирования кроны кедра сибирского (Pinus sibirica Du Tour) после декапитации, произрастающего на плантации «Метеостанция» в Учебно-опытном лесхозе Караульного лесничества в условиях юга Средней Сибири. Объектом исследований являлась 54-летняя плантация кедра сибирского, выращенная из семян, заготовленных в 1964 г. в Лениногорском лесхозе (Республика Казахстан). Декапитация проведена у деревьев 42-летнего возраста в 2005 г. с оставлением ствола высотой 1,4-1,7 м. Верхняя часть кроны удалена на 50,0-66,7%. В 2017 г. деревья достигли высоты 5,6-9,1 м. Количество лидирующих побегов, заменивших центральный, составило 3-7 шт., длина которых за 12-летний период достигла 4,0-7,6 м. Деревья с диаметром ствола 12-18 см имели по 3-4, с диаметром 20-26 см – по 6-7 шт. лидирующих побега. Установлено, что уровень изменчивости высоты деревьев низкий; прироста побегов, диаметра ствола – средний, количества лидирующих побегов – высокий. Наибольшей высотой (9,1 м) отличалось дерево № 4-98, превосходя другие особи на 8,3-62,5%. Сопоставлено количество боковых ветвей, образовавшихся на лидирующих побегах за 5 лет (2013-2017 гг.). Отмечено, что их средний прирост за исследуемый период находился в пределах 23,6-45,5 см. Между диаметром ствола и числом лидирующих побегов коэффициент корреляции (r) равен 0,619; числом лидирующих побегов и количеством сформированных боковых ветвей спустя 7-12 лет после декапитации – 0,770, диаметром ствола при обрезке и высотой деревьев после 12 лет декапитации – 0,738.

Download Full-text