scholarly journals Expression of adaptation potential by cultivars of highbush blueberry when introduced to Belarusian Polesia

2021 ◽  
Vol 38 ◽  
pp. 00066
Author(s):  
Tatyana V. Kurlovich

Highbush blueberry is a group of endemic species from North America. Its introduction to Belarusian Polesia is associated with transfer of cultivars of this group into an environment with a harsher climate. Adaptive capacity of highbush blueberry allowed its cultivars to adapt to the new environment, fully develop their fruits and complete their vegetation cycle. The property of the plants to fully utilize the time of their vegetation period manifested as shortening of the completion of the main phenophases due to the influence of the temperature factor. In an introduced environment the speed of the phenophases significantly depended on the peak day temperatures, which allowed the cultivars to successfully develop their fruits in an environment where they don’t receive sufficient heat during the vegetation period, as well as to complete the vegetation cycle.

2018 ◽  
Vol 27 ◽  
pp. 53-73 ◽  
Author(s):  
Alberto Sendra ◽  
Kazunori Yoshizawa ◽  
Rodrigo Lopes Ferreira

Two new oversize troglobitic species of diplurans campodeids, Pacificampadaidarabotchi Sendra, sp. n. and Pacificampanipponica Sendra, sp. n., found in three caves in two southern Japanese islands are described. It is the first record of cave-dwelling Diplurans from Japan and more specifically these are two Campodeinae of Pacificampa Chevrizov, 1978 formally known in continental Asia with three cave-dwelling species described in Russia and China near the north of the Korean peninsula. In P.daidarabotchisp. n., in addition to its oversized body, the longest ever known in campodeids family, it shows as its main differential taxonomical feature the absence of lp metanotal macrosetae. P.nipponicasp. n. is much closer to continental Pacificampa species but it shows differences in the urotergal macrosetae formula. Both Japanese species have clear troglomorphic features related with their elongated body and appendages and an increase in number and complexity of the sensorial antennal equipment with unique olfactory chemoreceptors. Two biogeographical remarks are inferred: P.nipponicasp. n., has been found in two islands that were connected during the glacial age and P.daidarabotchisp. n. lives in a single cave near another where P.nipponicasp. n. dwells which allowing to suggest a sympatric distribution; Pacificampa seems to be related with Eumesocampa, a genus from North-America, as a consequence of the Holarctic connection between Asia and America. The interests of P.daidarabotchisp. n. and P.nipponicasp. n. as endemic species in addition to their biogeographical importance should be taken into consideration to ensure better management of the three touristic caves where they dwell and especially the protection of Mejido-do cave, the only location of the large P.daidarabotchisp. n. near to an active quarry.


Author(s):  

Abstract A new distribution map is provided for Blueberry leaf mottle virus. Virus: Comoviridae: Nepovirus Hosts: Vaccinium spp. especially highbush blueberry (Vaccinium corymbosum). Information is given on the geographical distribution in NORTH AMERICA, Canada, New Brunswick, USA, Michigan, New York.


2018 ◽  
Vol 11 ◽  
pp. 00016
Author(s):  
Gulnaz Galikeeva ◽  
Olga Elizaryeva ◽  
Albert Muldashev ◽  
Natalia Tyutyunova ◽  
Natalia Maslova

Consideration is given to biometric indices and vitality structure of Oxytropis kungurensis Knjasev (Fabaceae), an endemic species of the South Urals and Central Cis-Ural Region, observed in 2015 and 2016 in the coenopopulation on the eastern shore of Lake Aushkul (Uchalinsky District, Republic of Bashkortostan, Russia). The paper reveals differences in plant biometrics and vitality according to the years of observation. Judging from 14 biometric indices out of 19 indices analyzed, middle-aged generative plants in 2015 surpass those in 2016. Indices that characterize the vitality structure are higher in 2015. The vitality type of the coenopopulation varies from prospering to depressive. Variations in biometric and vitality indices are associated with changing weather conditions during the vegetation period. In 2015, there were optimal conditions for plants to grow and develop.


1997 ◽  
Vol 75 (12) ◽  
pp. 2177-2195 ◽  
Author(s):  
P. E. Rothrock ◽  
A. A. Reznicek ◽  
L. R. Ganion

The Carex straminea complex (section Ovales) consists of five species limited to hydric communities of eastern North America. Based upon gross morphology and perigynium structure, these species are closely aligned with the Carex albolutescens complex but not the western species Carex feta. An SEM investigation of the micromorphology of achene and style epidermis from 15 species of Carex section Ovales demonstrated much interspecific variation. As a result, these data could not confirm the relationship between the C. straminea complex and the C. albolutescens complex but did support the delimitation of section Ovales. Numerical analysis showed that characters of the inflorescence and perigynium are satisfactory for separating C. straminea from Carex hormathodes, a species limited to the Atlantic coast. Likewise, characters of inflorescence, pistillate scale, and perigynium could clearly separate the geographically widespread Carex alata from the Florida endemic species Carex vexans. A fifth and relatively distinctive species, Carex suberecta, was found to have a narrow ecological preference for fens and a distribution limited to the upper Midwest, with outlying populations in western Virginia. Putative natural hybrids are documented between Carex scoparia and Carex longii and some species in the C. straminea complex. Key words: Carex, Cyperaceae, section Ovales, taxonomy, SEM, biogeography, hybrid.


Paleobiology ◽  
1989 ◽  
Vol 15 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Martin A. Buzas ◽  
Stephen J. Culver

Several very large, taxonomically standardized data sets have been compiled and utilized to investigate biogeographic and evolutionary patterns of continental margin benthic foraminifera. Mean partial species durations for 87 frequently occurring and 180 rarely occurring species on the Atlantic continental margin of North America are the same, namely 21 m.y. The global fossil record of these species indicates no center or centers of origin and indicates very rapid dispersal. The Miocene had the greatest number of first occurrences with 46%, followed by the Pleistocene, Pliocene and Oligocene with approximately 13% each. The remaining 14% first occur in the Eocene, Paleocene, and Cretaceous. Species with a wide geographic distribution often exhibit longer species durations than those with narrow geographic ranges. The vast majority of endemic species (150 of 175) occur rarely and have no fossil record.


Phytotaxa ◽  
2020 ◽  
Vol 447 (1) ◽  
pp. 1-15 ◽  
Author(s):  
WESLEY M. KNAPP ◽  
DERICK B. POINDEXTER ◽  
ALAN S. WEAKLEY

Marshallia grandiflora (Asteraceae, Helenieae, Marshalliinae) is recognized as the 53rd extinct species to North America, and an endemic species of the Blue Ridge physiographic province of North Carolina. A new name, Marshallia pulchra, is provided for the more broadly ranging species that has been confounded with and generally considered conspecific with M. grandiflora. Morphologic and biogeographic data clearly separates two species within the previous concept of M. grandiflora. Marshallia grandiflora and M. pulchra are compared with their sister species, M. legrandii. Cytological data is given for M. legrandii, including the first report of B-chromosomes in the genus.


Zootaxa ◽  
2020 ◽  
Vol 4819 (2) ◽  
pp. 349-363
Author(s):  
P. PAQUIN ◽  
N. DUPÉRRÉ ◽  
D.J. BUCKLE ◽  
D. UBICK

The genus Oaphantes is known from the West Coast of North America. Here we revise the genus which now includes three species, two of which are new: O. cryophilus n. sp. and O. prometheus n. sp. All Members of the genus Oaphantes show affinities for cave habitats. Oaphantes pallidulus is known from caves of the Coast Ranges of California and also from epigean records. Oaphantes cryophilus n. sp. is restricted to caves in the southern limit of its distribution in the Sierra Nevada Mountains of California, but in the north it is known from epigean records in Oregon, Washington and British Columbia. Oaphantes prometheus n. sp. is an eyeless troglobite endemic to a single cave in the Sierra Nevada of California. The distribution and relationships of the three species suggest an evolutive scenario likely due to climatic variations and affinities for colder conditions.


1986 ◽  
Vol 64 (3) ◽  
pp. 637-639 ◽  
Author(s):  
D. K. Cone ◽  
A. O. Dechtiar

Gyrodactylus katharineri Malmberg, 1964, G. lotae Gussev, 1953, and G. lucii Kulakovskaya, 1952 are reported for the first time from North American host fishes (Cyprinus carpio, Lota lota, and Esox lucius, respectively). The new material is described. Gyrodactylus katharineri is an introduced species that apparently arrived along with host shipments brought to North America from Europe during the last century. Gyrodactylus mizellei Kritsky and Leiby, 1971 may be a synonym of G. katharineri. Gyrodactylus lotae and G. lucii are endemic species with natural ranges that extend throughout freshwaters of Eurasia and North America.


1971 ◽  
Vol 2 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Walter L. Friedrich ◽  
Ole E. Heie

AbstractA fossil specimen of Longistigma caryae (Harris) has been found in tuff from Iceland, locality: Hrútagíl i Mókollsdal in northwestern Iceland, age: Upper Miocene or Lower Pliocene. In the present time the species lives exclusively in the region of the Eastern Deciduous Forests of North America on several genera of deciduous trees, a.o. Carya and Fagus. The find certifies paleobotanical evidence indicating that Iceland once belonged in the region of deciduous forests with a flora more like the modern eastern North American flora than any other modern flora region. The recent aphid fauna of Iceland contains only palaearctic, holarctic, cosmopolitic, and endemic species and species common with Greenland and arctic Canada.


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