Sprouting Ability and Seasonal Changes of Sugar Concentrations in Rhizomes of Calystegia sepium and Roots of Convolvulus arvensis

2015 ◽  
Vol 122 (3) ◽  
pp. 133-140 ◽  
Author(s):  
Leonie Willeke ◽  
Hansjoerg Krähmer ◽  
Wilhelm Claupein ◽  
Roland Gerhards
Keyword(s):  
Seasonal Changes ◽  
Convolvulus Arvensis ◽  
Sprouting Ability ◽  
Calystegia Sepium

scholarly journals Hyalesthes obsoletus is an active vector of Wood blackening in the Republic of Moldova

2021 ◽  
Vol 34 ◽  
pp. 04020
Author(s):  
Evgeniy Haustov ◽  
Victor Bondarciuc
Keyword(s):  
Climatic Conditions ◽  
Xanthium Strumarium ◽  
Convolvulus Arvensis ◽  
Bois Noir ◽  
Republic Of Moldova ◽  
Sonchus Oleraceus ◽  
Field Bindweed ◽  
Calystegia Sepium ◽  
The Republic ◽  
Hyalesthes Obsoletus

Hyalesthes obsoletus (Signoret) is an important vector of Wood Blackening in the Republic of Moldova. To identify the causes of the epidemiology of this disease in vineyards, the period of flight and the preference of the host plant H. obsoletus in the field were studied. Monitoring of vineyards showed that this species was found on the Field Bindweed (Convolvulus arvensis L.), and during the period of mass flight, the leafhopper was observed on Xanthium strumarium and Gorets bindweed (Fallopia convolvulus L.). The captured leafhoppers were diagnosed with the presence of Bois Noir stolbur phytoplasm (STOL). The adults of H. obsoletus were also caught from other herbaceous plants: Povoy fence (Calystegia sepium L.), Garden quinoa (Ariplex hortensis L.), Sow thistle (Sonchus oleraceus L.), Medicinal dandelion (Taraxacum officinale L.), as well as c Stinging nettle (Urtica dioica L.). Changes in climatic conditions in the region, causing premature drying of the grass cover, forces cicadas - vectors to switch to actively growing plants during this period, including grapes, which contributes to the widespread of the disease.

Fusicladium convolvularum. [Descriptions of Fungi and Bacteria].

2002 ◽  
Author(s):  
K. Schubert
Keyword(s):  
Czech Republic ◽  
New Zealand ◽  
Great Britain ◽  
Geographical Distribution ◽  
Leaf Spot ◽  
Convolvulus Arvensis ◽  
Airborne Conidia ◽  
Calystegia Sepium

Abstract A description is provided for Fusicladium convolvularum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot. HOSTS: Species of Calystegia and Convolvulus (Convolvulaceae), including Calystegia sepium, C. soldanella and Convolvulus arvensis. GEOGRAPHICAL DISTRIBUTION: AUSTRALASIA: New Zealand. EUROPE: Czech Republic, Great Britain. TRANSMISSION: Presumably by airborne conidia.

Septoria convolvuli. [Descriptions of Fungi and Bacteria].

1999 ◽  
Author(s):  
T. V. Andrianova
Keyword(s):  
Geographical Distribution ◽  
Tamil Nadu ◽  
Infected Plant ◽  
Far East ◽  
Republic Of Georgia ◽  
Plant Debris ◽  
East Siberia ◽  
Convolvulus Arvensis ◽  
Ipomoea Tricolor ◽  
Calystegia Sepium

Abstract A description is provided for Septoria convolvuli. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot. HOSTS: Calystegia divaricata, C. hederacea, C. inflata (syn. : Convolvulus sepium, Calystegia sepium), C. pseudocanthabrica, C. rosae, C. silvatica, C. soldanella, Convolvulus arvensis, C. calvertii, C. persicus, Ipomoea tricolor, Ipomoea sp. (Convolvulaceae). [Type host - Convolvulus arvensis.] GEOGRAPHICAL DISTRIBUTION: Asia: Armenia, Azerbaijan, China, Republic of Georgia, India (Tamil Nadu), Kazakhstan, Kirghizistan, Korea, Russia (East Siberia, Far East), Turkmenistan, Uzbekistan. Europe: Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Germany, Ireland, Italy, Hungary, Latvia, Lithuania, Moldova, Norway, Poland, Portugal, Romania, Russia, UK, Ukraine, former Yugoslavia. North America: Canada, USA. South America: Argentina. TRANSMISSION: Not reported, but almost certainly by air-borne or splash dispersed conidia from infected plant débris.

scholarly journals The features of xylem tracheary elements in some herbaceous members of the family Convolvulaceae Horan.

Turczaninowia ◽  
2021 ◽  
Vol 24 (3) ◽  
pp. 129-137
Author(s):  
Yevgeniya V. Goremykina ◽  
Aleksandra D. Azaryan ◽  
Esong Linda Akime ◽  
Kseniya Y. Leshchina
Keyword(s):  
Parasitic Plants ◽  
Tracheary Elements ◽  
Convolvulus Arvensis ◽  
Climbing Plants ◽  
Conducting Tissue ◽  
The Family ◽  
Cuscuta Campestris ◽  
Order Of Magnitude ◽  
Parasitic Lifestyle ◽  
Calystegia Sepium

Numerous narrow xylem tracheary elements (tracheids and vessels) are present in liana stems, along with a few wide vessels that perform the main water-conducting function. This trait, known as “vessel dimorphism”, has been identified in studies on water-conducting tissue in autotrophic plants, including a large number of perennial climbing plants and a number of annual vines. Information is lacking on the presence of vessel dimorphism in parasitic plants of the lianescent habit. In this study, we performed a structural analysis of stems in the autotrophic herbaceous vines of Convolvulus arvensis L. and Calystegia sepium (L.) R. Br., as well as in the parasitic vines of Cuscuta monogyna Vahl, Cuscuta planiflora Ten., Cuscuta approximata Bab., and Cuscuta campestris Yunck., of the family of Convolvulaceae Horan. The xylem of C. arvensis and C. sepium contains a few wide conductive elements and many narrow ones. This feature is typical of autotrophic climbing plants. Only narrow tracheary elements are present in the xylem of the parasitic vines of the genus of Cuscuta L. (dodders). The total number of the tracheary elements is an order of magnitude less in the dodders than it is in the autotrophic vines. It is possible that the autotrophic ancestor of dodders lost the characteristic feature of the xylem of climbing plants, known as vessel dimorphism, during its transition to the parasitic lifestyle.

Spreading the Word: Seasonal Changes Mean New Opportunities for Media Coverage

ASHA Leader ◽  
2013 ◽  
Vol 18 (7) ◽  
Keyword(s):  
Media Coverage ◽  
Seasonal Changes ◽  
Swimming Pools

Summer kicking into high gear conjures images of swimming pools and barbeques. But before you book your beach house for the weekend, think about what the changing seasons can mean for you professionally.

Seasonal changes in a ultraviolet structural colour signal in blue tits, Parus caeruleus

2002 ◽  
Vol 76 (2) ◽  
pp. 237-245 ◽  
Author(s):  
JONAS ORNBORG ◽  
STAFFAN ANDERSSON ◽  
SIMON C. GRIFFITH ◽  
BEN C. SHELDON
Keyword(s):  
Seasonal Changes ◽  
Parus Caeruleus ◽  
Structural Colour ◽  
Blue Tits ◽  
Colour Signal

Seasonal changes in nitrogen fractions of Pachysandra terminalis, a forest evergreen chamaephyte

1990 ◽  
Vol 79 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Fumio Yoshie ◽  
Hirohito Arai ◽  
Hideaki Nakashima ◽  
Shoichi Kawano
Keyword(s):  
Seasonal Changes ◽  
Nitrogen Fractions
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