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Известия СПбЛТА
Article . 2019 . Peer-reviewed
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Известия СПбЛТА
Article . 2019
Data sources: Datacite
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Diagnostics of genus Pinus representatives resistance to periodical temperature increases during winter-spring period

Диагностика устойчивости представителей рода Pinus к периодическим повышениям температуры в зимне-весенний период
Authors: C.Р. Кузьмин;

Diagnostics of genus Pinus representatives resistance to periodical temperature increases during winter-spring period

Abstract

Работа посвящена изучению внутривидовых различий представителей рода Pinus (Pinus sylvestris, Pinus sibirica иPinuskoraiensis) по устойчивости к повышению температуры в зимневесенний период. В качестве объектов исследования были взяты искусственные насаждения деревьев этих видов различного происхождения. Для изучения перехода деревьев в состояние покоя и выхода из него был использован метод регистрации кривых термоиндуцированных изменений нулевого уровня флуоресценции, определено содержание хлорофиллов и абсцизовой кислоты в хвое. При рассмотрении внутривидовых отличий выявлено, что в географических культурах Красноярского края нарастание фотосинтетической активности в период выхода из состояния зимнего покоя у северных климатипов (по сравнению с южными) происходит быстрее. Выявлены достоверные различия между богучанским и балгазинским климатипами сосны обыкновенной (р0,001) ермаковским и шегарским сосны сибирской (р 0,01) облученским и чугуевским сосны корейской (р0,01). В хвое северных климатипов, эволюционно сформировавшихся в более холодных районах, в ранневесенний период содержание фотосинтетических пигментов выше, чем у растений южных климатипов, что в совокупности с меньшей глубиной покоя свидетельствует о более высокой потенциальной готовности северных растений к возобновлению фотосинтетической активности. Количество абсцизовой кислоты, как индикатора покоя в предзимний период, в хвое растений южных климатипов заметно преобладает над ее содержанием в северных климатипах у всех исследованных видов. Таким образом, можно констатировать, что представители южных климатипов всех трех видов рода Pinus имеют большую глубину зимнего покоя и большую устойчивость к периодическим повышениям температуры в зимневесенний период по сравнению с северными климатипами, и для целей лесоразведения в период существенного изменения климата в будущем целесообразно использовать посевной и посадочный материал южных климатипов, что позволит минимизировать потери посадочного материала в зимний период от физиологического иссушения. The research addresses intraspecific differences between some species of genus Pinus (Pinus sylvestris, Pinus sibirica and Рinus koraiensis) in resistance to temperature increase during winterspring period. The objects of the research are artificial plantations of these species of different origin. For the study of trees dormant period activation and breaking the method of curves registration of thermal induced changes of zero fluorescence level was used, also chlorophylls and abscisic acid percentage in needles was determined. After analysis of intraspecific differences, it was revealed that in the provenance trial of Krasnoyarsk krai northern climatypes (in comparison with southern) have higher speed of photosynthetic activity increase during winter dormancy breaking. Significant differences were revealed between Scots pine climatypes: boguchany and balgazyn (p0.001) Siberian stone pine climatypes: ermakovskoe and shegarsky (p0.01) and Korean stone pine climatypes: obluchye and chuguevka (p 0.01). In the needles of northern climatypes, which were evolutionary formed in colder regions, in early spring period the percentage of photosynthetic pigments is higher than in plants of southern climatypes. Along with smaller dormancy depth, it indicates high potential readiness of northern plants to renewal of photosynthetic activity. The amount of abscisic acid, as dormancy indicator in close to winter period, is clear higher in the needles of southern climatypes than in northern ones for all studied species. As a result it could be concluded, that representatives of southern climatypes of all three species of genus Pinus have bigger winter dormancy depth and higher resistance to periodical temperature increases. In future for forest cultivation in period of essential climate change, it could be advisable to use seed and plant material from southern climatypes for minimization of plant material losses during winter period from physiological dehydration.

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Keywords

географические культуры, climate change, winter dormancy, флуоресценция, chlorophyll, fluorescence, хлорофилл, Pinus, изменение климата, зимний покой, provenance trial

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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Average
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