Reaction of Some Pacific Coast Strawberry Cultivars to Leaf Scorch

Plant Disease ◽  
1981 ◽  
Vol 65 (3) ◽  
pp. 254 ◽  
Author(s):  
R. H. Converse
Keyword(s):  
Pacific Coast ◽  
Leaf Scorch ◽  
Strawberry Cultivars

scholarly journals Differences in virulence of Diplocarpon earlianum isolates on selected strawberry cultivars

2005 ◽  
Vol 77 (3) ◽  
pp. 113-118 ◽  
Author(s):  
A.G. Xue ◽  
J.C. Sutton ◽  
A. Dale ◽  
J.A. Sullivan
Keyword(s):  
Leaf Area ◽  
Fragaria X Ananassa ◽  
Leaf Disk ◽  
Leaf Scorch ◽  
High Virulence ◽  
Virulence Group ◽  
Strawberry Cultivars

Eight isolates of Diplocarpon earlianum were evaluated for virulence, measured as the ability to produce percent leaf area with symptoms (LAS), on 18 cultivars of strawberry (Fragaria x ananassa). Significant differences were observed from isolate and cultivar effects, and isolate x cultivar interaction. Four of the eight isolates, on the average of 18 strawberry cultivars, had LAS ranging from 6.7-9.6%, and were classified as a group of low virulence. The remaining four isolates had LAS ranging from 25.9-45.8% and formed a high virulence group. Of the cultivars tested, 'Vibrant' was resistant and 'Micmac' was susceptible to all isolates in both virulence groups; 'Honeoye', 'Redcoat', 'Scotland', 'St. Clair' and 'Vantage' were resistant to the low virulence group, but had differential interactions to isolates in the high virulence group; the remaining 11 cultivars were susceptible to the high virulence group, but had differential interactions to isolates in the low virulence group. It is suggested that a number of different pathogen isolates are required to test strawberry genotypes for leaf scorch resistance. A leaf disk assay was developed in this study and can be used for laboratory evaluations of strawberry genotypes for susceptibility to D. earlianum.

scholarly journals EVALUATION OF STRAWBERRY CULTIVARS WITH DIFFERENT DEGREES OF RESISTANCE TO RED STELE

HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 480f-480
Author(s):  
Shahrokh Khanlzadeh ◽  
Robert Pelletler ◽  
Michel J. Lareau ◽  
Deborah Buszard
Keyword(s):  
Fruit Quality ◽  
Leaf Spot ◽  
Fruit Color ◽  
Fruit Firmness ◽  
Fruit Characteristics ◽  
Leaf Scorch ◽  
Infested Field ◽  
Plant Characteristics ◽  
Red Stele ◽  
Strawberry Cultivars

Sixteen commercially grown strawberry cultivars with different degrees of resistance to red stele were evaluated for yield, plant characteristics and fruit quality. `Bounty', `Midway', and `Sparkle' had sufficient interior and exterior fruit color, good to satisfactory flavor and suitability for freezing. However, these cultivars as well as `Redcoat' lacked sufficient fruit firmness. `Bounty', `Redcoat', `Redchief and `Sparkle' had the highest yield in the three-year test. `Annapolis', `Earliglow' and `Scott' had reflexed calyx whereas `Allstar', `Annapolis', `Cornwallis', `Earllglow', `Guardian' and `Sunrise' were characterized by a raised neck suitable for mechanical dehulling. `Sunrise' appeared to be the only cultivar free of leaf scorch and leaf spot. `Tristar', `Redchief, `Lester', `Darrow' and `Arking' roots had the lowest incidence of red stele when planted in a naturally-infested field. No relationship between fruit characteristics was observed which suggests the necessity to examine each Individual tralt.

Comparative assessments of seedling runner and adult-plant resistance to leaf scorch in strawberry

1997 ◽  
Vol 77 (2) ◽  
pp. 279-281 ◽  
Author(s):  
A. G. Xue ◽  
J. C. Sutton ◽  
A. Dale
Keyword(s):  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Adult Plant ◽  
Fragaria Ananassa ◽  
Adult Plant Stage ◽  
Leaf Scorch ◽  
Plant Stage ◽  
Half Diallel ◽  
Adult Plants ◽  
Strawberry Cultivars

Nine progeny populations, derived from a half-diallel and self-crosses of strawberry cultivars Vantage, Scotland, Governor Simcoe and Kent were evaluated for resistance to leaf scorch (Diplocarpon earlianum) as seedling runners and at the adult-plant stage. At both stages selfed Vantage and selfed Scotland were resistant; crosses between Vantage and Kent and between Governor Simcoe and Kent were susceptible; and remaining progeny populations were of intermediate resistance. A strong correlation (r = 0.970, P < 0.01) was observed between resistance of seedling runners and adult-plants of the nine S1 and F1 populations. The results suggest that strawberry genotypes can be evaluated effectively at the seedling stage in a breeding program for resistance to leaf scorch. Key words: Leaf scorch, Diplocarpon earlianum, strawberry, Fragaria × ananassa, seedling-runner, adult plant, resistance

The Philological Association of The Pacific Coast

PMLA ◽  
1935 ◽  
Vol 50 (4) ◽  
pp. 1373-1374
Keyword(s):  
Annual Meeting ◽  
Pacific Coast ◽  
Stanford University ◽  
The Pacific

The thirty-seventh annual meeting of the Philological Association of the Pacific Coast was held at Stanford University, California, on November 29 and 30, 1935.

Psilocybe allenii - a new bluing species from the Pacific Coast, USA.

2012 ◽  
Vol 64 (2) ◽  
pp. 181-195 ◽  
Author(s):  
Jan Borovička ◽  
Alan Rockefeller ◽  
Peter G. Werner
Keyword(s):  
Pacific Coast ◽  
The Pacific

Archibald Menzies (1754–1842), an early botanist on the northwestern seaboard of North America, 1792–1794, with further notes on his life and work

2001 ◽  
Vol 28 (1) ◽  
pp. 71-122 ◽  
Author(s):  
ERIC W. GROVES
Keyword(s):  
North America ◽  
Pacific Coast ◽  
Later Life ◽  
Northwest Pacific ◽  
Historical Events ◽  
Short Biography

ABSTRACT: This paper includes a short biography of Menzies and an outline of the historical events on the northwest Pacific coast leading up to Vancouver's voyage. A table listing the botanical visitors to that area prior to 1792 is given followed by a résumé of the evolution of Menzies's journal. Sources used in compiling the chronology of his movements during Vancouver's voyage are then set down, ending the section with an account of Menzies's own visit, 1792–1794. His method of plant collecting is discussed along with an account of his collections and their subsequent disposal. The paper concludes with details of Menzies's later life, his connection with other botanists of the day, and an assessment of his achievements.

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