The Biology of Canadian Weeds. 111. Anthriscus sylvestris (L.) Hoffm

1999 ◽  
Vol 79 (4) ◽  
pp. 671-682 ◽  
Author(s):  
S. J. Darbyshire ◽  
R. Hoeg ◽  
J. Haverkort
Keyword(s):  
British Columbia ◽  
Key Words ◽  
Vegetative Reproduction ◽  
Old Fields ◽  
Eastern Canada ◽  
Weed Biology ◽  
Perennial Crops ◽  
Anthriscus Sylvestris ◽  
Disturbed Areas

Wild chervil, Anthriscus sylvestris (L.) Hoffm. (Apiaceae), is a weed of perennial crops, old fields, disturbed areas and roadsides. Introduced from Eurasia, it is widely naturalized in eastern Canada from Newfoundland to Ontario and at two sites in British Columbia. It is a monocarpic short-lived perennial, reproducing by seed and budding from the root crown. Dense populations achieved through vegetative reproduction can exclude most other vegetation. The rust, Puccinia pimpinellae subsp. pimpinellae, was detected on a population of wild chervil from Quebec. Key words: Wild chervil, Anthriscus sylvestris, weed biology

The biology of Canadian weeds.: 97. Barbarea vulgaris R.Br.

1991 ◽  
Vol 71 (1) ◽  
pp. 149-166 ◽  
Author(s):  
Marilyn A. MacDonald ◽  
Paul B. Cavers
Keyword(s):  
British Columbia ◽  
Key Words ◽  
Seed Production ◽  
Seed Dormancy ◽  
Rapid Growth ◽  
Barbarea Vulgaris ◽  
Weed Biology ◽  
Southern Ontario ◽  
Grain Crops ◽  
Disturbed Areas

Barbarea vulgaris R.Br. is an introduced weed of recently disturbed areas, small-seeded grain crops, roadsides and pastures. It is abundant in southern Ontario, Quebec and the northeastern U.S.A.; frequent in the Maritimes, British Columbia and the northwest coastal U.S.A.; and rare south of 33°N, north of 50°N and across the prairies. The weediness of this species largely results from its prolific seed production, enforced and induced seed dormancy, and its rapid growth under favourable conditions. Key words: Barbarea vulgaris, yellow rocket, weed biology

THE BIOLOGY OF CANADIAN WEEDS.: 76. Vicia angustifolia L.,V. cracca L., V. sativa L., V. tetrasperma (L.) Schreb. and V. villosa Roth.

1986 ◽  
Vol 66 (3) ◽  
pp. 711-737 ◽  
Author(s):  
L. W. AARSSEN ◽  
IVAN V. HALL ◽  
K. I. N. JENSEN
Keyword(s):  
British Columbia ◽  
Biological Data ◽  
Crop Plants ◽  
Vicia Sativa ◽  
Coastal Regions ◽  
Eastern Canada ◽  
Weed Biology ◽  
Wide Range ◽  
Weedy Species ◽  
Vicia Cracca

This paper provides a summary of biological data on five weedy species of vetch (Vicia). All species are naturalized in Canada and are found in a wide range of habitats with their main centers of distribution in Eastern Canada and the south and coastal regions of British Columbia. Vicia cracca is the most common and serious problem and occurs nationwide. Vicia sativa is the most variable of the species; numerous subspecies, varieties, forms and hybrids are described. Tendrils allow vetches to attach to crop plants and form mat-like infestations. Vetch species are sensitive to a number of herbicides but there appears to be differential tolerance among species to chlorthal dimethyl, 2,4-DB and others. Vicia spp. are host to several economically important pathogens and parasites.Key words: Weed biology, vetches, Vicia spp., distribution

Production of uredinia and telia by stalactiform blister rust in British Columbia

1993 ◽  
Vol 71 (3) ◽  
pp. 519-521 ◽  
Author(s):  
B. J. van der Kamp
Keyword(s):  
British Columbia ◽  
Life Cycle ◽  
Key Words ◽  
Alternate Host ◽  
Alternate Hosts ◽  
Blister Rust ◽  
Dry Areas ◽  
Do So

Records of uredinia and telia production on the alternate hosts of Cronartium coleosporioides in British Columbia and inoculation of Castilleja miniata with aeciospores collected from various locations showed that rust isolates from dry areas of the interior of British Columbia do not produce uredinia and may have lost the ability to do so. Collections from somewhat wetter areas produced uredinia or mixtures of uredinia and telia immediately following aeciospore inoculations, and field collections from such areas in June commonly had mixtures of uredinia and telia. Loss of the uredinial stage may be a response to climates that are often unsuitable for the spread or survival of the rust on the alternate host. Key words: stalactiform rust, uredinia, telia, rust life cycle.

AC Burman barley

1992 ◽  
Vol 72 (2) ◽  
pp. 473-475
Author(s):  
K. M. Ho ◽  
T. M. Choo ◽  
R. A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
Test Weight ◽  
High Yield ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Good Test ◽  
Barley Breeding ◽  
Moderately Resistant

AC Burman is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture Canada and is adapted to Eastern Canada. It was selected from a Leger/Bruce/2/2*Leger cross. AC Burman has high yield, good test weight and is moderately resistant to loose smut (Ustilago nuda (Jens.) Rostr.).Key words: Hordeum vulgare L., six-rowed barley, feed barley, high yield

Kernel colour varies with cultivars and environments in barley

1998 ◽  
Vol 78 (2) ◽  
pp. 217-222 ◽  
Author(s):  
M. J. Edney ◽  
T. M. Choo ◽  
D. Kong ◽  
T. Ferguson ◽  
K. M. Ho ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
Western Canada ◽  
Net Blotch ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Key Words Barley

Kernel colour is an important marketing trait for both malting and feed barleys. Therefore a study was initiated to investigate the kernel colour of 75 Canadian barley (Hordeum vulgare L.) cultivars at three locations (Charlottetown, Ottawa and Bentley) across Canada in 1991 and 1992. Kernel colour was measured by an Instrumar Colormet Spectrocolorimeter. Kernel colour was found to be brighter at the two locations in eastern Canada (Charlottetown and Ottawa) than at the location in western Canada (Bentley). Two-row cultivars on average were more discoloured than six-row cultivars; eastern two-row were more discoloured than western two-row. Covered barleys were less discoloured than hulless barleys in five of the six environments, but covered barleys at Bentley in 1992 were more discoloured than hulless barleys. Kernel discolouration appeared to be associated with susceptibility to net blotch for six-row cultivars. More studies are needed on kernel discolouration of barley. Key words: Barley, Hordeum vulgare, kernel colour

Predation by Sharks on the Grey Seal (Halichoerus grypus) in Eastern Canada

1983 ◽  
Vol 40 (3) ◽  
pp. 267-271 ◽  
Author(s):  
Paul Brodie ◽  
Brian Beck
Keyword(s):  
Key Words ◽  
Population Size ◽  
Halichoerus Grypus ◽  
Longline Fishery ◽  
Grey Seal ◽  
Eastern Canada ◽  
The Past ◽  
Harbour Seals ◽  
Commercially Important ◽  
Important Fish

The increase in population size of the grey seal (Halichoerus grypus) off eastern Canada over the past 20 yr may be attributed to a decrease in shark stocks, their supposed predators. Reduction of the shark population is presumed to have resulted from a directed longline fishery and, of greater significance, from a change in the fishery for swordfish (Xiphias gladius) from selective harpooning to pelagic longlining, which has produced a large bycatch of sharks. The resulting enhanced survival of grey seals is reflected in greater infestation of commercially important fish species by the codworm (Phocanema decipiens).Key words: grey seals, harbour seals, sharks, swordfish, codworm, predation, fisheries

Second Diapause in Spruce Budworm from Eastern Canada

1961 ◽  
Vol 93 (7) ◽  
pp. 594-602 ◽  
Author(s):  
George T. Harvey
Keyword(s):  
British Columbia ◽  
Experimental Analysis ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Fourth Instar ◽  
Eastern Canada ◽  
Low Incidence ◽  
One Year ◽  
Storage Times ◽  
Second Period

In eastern Canada larvae of the spruce budworm, Choristoneura fumiferana (Clem.), complete their development in one year, undergoing only one period of winter diapause in the second instar, whereas in certain parts of British Columbia, at high altitudes, two years are normally required for development, the larvae spending a second period of winter diapause in the fourth instar (3, 9). Among laboratory-reared eastern budworm there are a few individuals that enter a similar second diapause (7). The low incidence and somewhat irregular occurrence of this second diapause in eastern budworm, even in laboratory rearings, have hitherto made detailed studies almost impossible, but unusual storage times and treatments used recently in rearing experiments had the unexpected effect of increasing the incidence of this tvpe of behaviour to a level where experimental analysis became possible. This paper describes these larvae and their behaviour; an account of the effects of various conditions upon the incidence of second diapause will be presented later.

BALDWIN OAT

1987 ◽  
Vol 67 (2) ◽  
pp. 499-501
Author(s):  
HAROLD R. KLINCK
Keyword(s):  
Key Words ◽  
Avena Sativa ◽  
Test Weight ◽  
High Yield ◽  
Eastern Canada ◽  
Early Maturity ◽  
Hull Content ◽  
Mcgill University ◽  
High Test

Baldwin is a white-hulled oat (Avetia sativa L.) cultivar with high yield, high test weight, low hull content and early maturity. It was developed at Macdonald College of McGill University and is adapted to eastern Canada. This cultivar was granted license no. 2563 in November 1985.Key words: Oat, Avena sativa L., high test weight

AC Alma barley

1997 ◽  
Vol 77 (4) ◽  
pp. 635-637 ◽  
Author(s):  
T. M. Choo ◽  
R. A. Martin ◽  
K. M. Ho ◽  
G. Atlin ◽  
R. Walton ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
Barley Breeding ◽  
Breeding Group ◽  
Key Words Barley ◽  
Cultivar Description

AC Alma is a six-row, spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture and Agri-Food Canada. It has high yield and excellent lodging resistance. AC Alma performed well across Eastern Canada. Key words: Barley, Hordeum vulgare L., cultivar description, high yield, lodging resistance

OAC Paisley oat

1997 ◽  
Vol 77 (4) ◽  
pp. 645-646
Author(s):  
D. E. Falk ◽  
G. Meatherall ◽  
E. Reinbergs
Keyword(s):  
Key Words ◽  
Avena Sativa ◽  
Crown Rust ◽  
High Yield ◽  
Science Department ◽  
Eastern Canada ◽  
Atlantic Region ◽  
Lodging Resistance ◽  
Early Maturity ◽  
Good Tolerance

OAC Paisley is a high yielding, lodging resistant, covered oat developed at the Crop Science Department, OAC, University of Guelph. OAC Paisley was selected from the cross of Ogle/OA630-2. It has outyielded the check cultivars over 29 station-years of testing in Ontario, Quebec and the Atlantic Region. OAC Paisley is well adapted to all of Eastern Canada. It has resistance to BYDV and good tolerance to septoria, but is susceptible to crown rust. It should fit well into barley-oat mixtures due to its early maturity and lodging resistance. Key words: Avena sativa L., high yield, lodging resistance, BYDV, septoria

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