БИОЛОГИЯ ОПЫЛЕНИЯ
 
 JUNIPERUS EXCELSA
 
 И
 
 J. DELTOIDES
 
 (CUPRESSACEAE) НА ЮЖНОМ БЕРЕГУ КРЫМА

Корсакова, С. П.; Саркина, И. С.; Багрикова, Н А

doi:10.1134/s0006813619100077

Cited by 5 publications

(1 citation statement)

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“…Arbutus andrachne is distributed in the Eastern Mediterranean, Asia Minor, Western Transcaucasia, and the Southern Coast of the Crimea [17]. These species are characterized by low seed viability and weak natural regeneration [18][19][20][21], included in Red books of the Russian Federation [22] and the Republic of the Crimea [23]. Juniperus excelsa is characterized as a light-loving and very drought-tolerant species, but its immature individuals are sensitive to moisture, light, and temperature conditions [24].…”

Section: Introductionmentioning

confidence: 99%

Influence of abiotic factors on CO₂-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

et al. 2020

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The complex interactions among environmental factors as incident light, temperature and soil water content create the need for used physiology-based models which describe plants performance under current and changing climatic conditions. In the present work the net photosynthetic rate of Pinus pallasiana D. Don, Juniperus excelsa M.Bieb. and Arbutus andrachne L. was modeled as a function of light irradiance using the modified rectangular hyperbola model, which is capable of describing the photoinhibition by the non-rectangular hyperbola function. A comparative assessment of the adaptive response of the photosynthetic apparatus plants on the effect of abiotic factors and their strategies in maintaining an optimal water balance in accordance with environmental conditions has been performed. The parameters of light curves of photosynthesis under conditions of full sunlight, moderate shading and drought are determined. In relation to light, Pinus pallasiana is characterized by wider ecological amplitude compared to Juniperus excelsa and Arbutus andrachne. Inefficient use of low-intensity of photosynthetically active radiation by immature plants Pinus pallasiana and Juniperus excelsa indicates poor shade tolerance and inability to resume in shade-type forests. Due to the low plasticity to changes in the light regime, Arbutus andrachne L. may experience a significant lack of light in strong shading. Arbutus andrachne has the highest ability to actively rearrange water regime in accordance with its external moisture supply, which causes the highest drought resistance, and Juniperus excelsa has a slightly lower capacity. Tolerance to hydrothermal stress in Pinus pallasiana is significantly lower than in Arbutus andrachne and Juniperus excelsa.

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Section: Introductionmentioning

confidence: 99%

Influence of abiotic factors on CO₂-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

et al. 2020

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Some features of the development of the generative sphere of Juniperus deltoides in Mountain Crimea

Korenkova

2023

bpssm

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To study the biomorphological features of cone berries and seeds of Juniperus deltoides, 17 sample plots were planted. By means of one-way analysis of variance, the degree of influence of abiotic and anthropogenic factors on seed productivity and seed quality was revealed. It has been established that the development of the generative sphere of J. deltoides is largely influenced by the anthropogenic load of the growing area and the amount of precipitation in the period from March to August. The size of the cone berries of J. deltoides Crimean population is smaller than in the main part of the species range. The vast majority of cone berries contain 3 seeds. Seed parameters vary insignificantly in the range from 4.4 mm to 6.0 mm (in height); from 2.3 mm to 3.2 mm (in width) and from 2.3 mm to 2.9 mm (in thickness). The weight of seeds varies quite widely from 15.9 g to 26.9 g. It has been established that almost half (47.53 %) of all J. deltoides individuals are characterized by low seed productivity. The proportion of full-grained seeds was determined, which is 1.32-26.92 %. The correlation coefficients between the indicators of the generative sphere range from 0.45 to 0.80.

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Features of flowering phenology of the main phytocomponents Juniperus excelsa-Quercus pubescens communities at Cape Martyan in 2020

Саркина¹,

Perminova²

2021

Naučn. zap. prirod. zapov. "Mys Martʹân"

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The paper presents the results of studying the phenological development of 122 species of woody, shrubby and herbaceous plants of high juniper and pubescent oak formations in the “Cape Martyan” Protected Area in 2020. Dates variations of the beginning of flowering from the average long-term dates in one direction or another were observed in 83 species (68% of the total number of observed ones), while coincidence or similar dates were noted in 39 species (32%). The analysis of the features of the generative development of the observed plants is given.

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БИОЛОГИЯ ОПЫЛЕНИЯ JUNIPERUS EXCELSA И J. DELTOIDES (CUPRESSACEAE) НА ЮЖНОМ БЕРЕГУ КРЫМА

Cited by 5 publications

References 0 publications

Influence of abiotic factors on CO₂-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

Influence of abiotic factors on CO₂-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

Some features of the development of the generative sphere of Juniperus deltoides in Mountain Crimea

Features of flowering phenology of the main phytocomponents <i>Juniperus excelsa</i>-<i>Quercus pubescens</i> communities at Cape Martyan in 2020

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БИОЛОГИЯ ОПЫЛЕНИЯ JUNIPERUS EXCELSA И J. DELTOIDES (CUPRESSACEAE) НА ЮЖНОМ БЕРЕГУ КРЫМА

Cited by 5 publications

References 0 publications

Influence of abiotic factors on CO2-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

Influence of abiotic factors on CO2-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

Some features of the development of the generative sphere of Juniperus deltoides in Mountain Crimea

Features of flowering phenology of the main phytocomponents <i>Juniperus excelsa</i>-<i>Quercus pubescens</i> communities at Cape Martyan in 2020

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Influence of abiotic factors on CO₂-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne

Influence of abiotic factors on CO₂-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne