scholarly journals Response of Pisum sativum germplasm resistant to Erysiphe pisi to inoculation with Erysiphe baeumleri, a new pathogen of pea

2010 ◽  
Vol 41 (No. 3) ◽  
pp. 95-103 ◽  
Author(s):  
M. Ondřej ◽  
R. Dostálová ◽  
L. Odstrčilová
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Natural Infection ◽  
Erysiphe Pisi ◽  
Field Screening ◽  
Susceptible Control ◽  
High Level ◽  
Screening Trials

Cultivars, homozygous sources and lines of pea (<I>Pisum sativum</I> L.) resistant to <I>Erysiphe pisi</I> had recently been attacked by another powdery mildew species, <I>Erysiphe</I> <I>baeumleri,</I> in the field and in glasshouse conditions. Inoculation with <I>E. baeumleri</I> was carried out in the glasshouse to evaluate the level of resistance of 16 pea genotypes. Susceptible pea lines produced abundant conidia and cleistocarps on petioles and leaves. Only the genotype Tudor (Cebeco 4119) was found to be completely resistant to <I>E. baeumleri</I>. Nineteen pea genotypes (with gene <I>er-1</I>) were tested to natural infection by <I>E. baeumleri</I> in field screening trials. Only few of them demonstrated a high level of resistance (Fallon, AC Melfort and Joel). Consort R, SGL 2024, SGL 1977 and Franklin were very susceptible to <I>E. baeumleri</I>. Cleistocarps with 1–4× dichotomously branching apices of appendages were formed only on susceptible and very susceptible plants of genotypes SGL 444/2185, Consort R, SGL 2024, SGL 1977, LU 390-R2, Lifter, Highlight, Cebeco 1171 and Carneval R in the field and glasshouse. Susceptible control genotypes without gene <I>er-1</I> (Komet, Adept and Gotik) were attacked in the trials by <I>E.&nbsp;pisi</I> only.

AAC Asher field pea

2020 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne ◽  
Debra L. McLaren ◽  
Richard Cuthbert ◽  
Hamid Naeem
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Asher is a semi-leafless, medium to large seeded yellow cotyledon field pea (Pisum sativum L.) variety developed at Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has high yielding potential, early to medium maturity and good lodging resistance. AAC Asher has maturity of 94 days, and one-thousand-seed weight of 257 g. AAC Asher is resistant to powdery mildew (caused by Erysiphe pisi Syd.), moderately tolerant to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Asher is adapted to all field growing regions in western Canada.

AAC Olive marrowfat pea

2019 ◽  
Vol 99 (5) ◽  
pp. 780-782
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debra McLaren ◽  
Yantai Gan ◽  
Parthiba Balasubramanian ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Research And Development ◽  
Seed Weight ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Development Centre ◽  
Green Cotyledon ◽  
Thousand Seed Weight

AAC Olive is a semi-leafless, green cotyledon, and high-yielding marrowfat pea (Pisum sativum L.) variety developed at the Lacombe Research and Development Centre, Agriculture and Agri-Food Canada. It has a maturity of 102 d, average thousand-seed weight of 344 g, and is resistant to powdery mildew (caused by Erysiphe pisi). AAC Olive was certificated on 16 Apr. 2019 by the Canadian Seed Growers Association under the authority of the Canada Seeds Act. The certificate number is 2165-2019.

AAC Ardill field pea

2014 ◽  
Vol 94 (1) ◽  
pp. 191-192
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debra McLaren ◽  
Cecil Vera ◽  
David Gehl
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Field Pea ◽  
Research Centre ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Pisum Sativum L

Bing, D.-J., Beauchesne, D., McLaren, D., Vera, C. and Gehl, D. 2014. AAC Ardill field pea. Can. J. Plant Sci. 94: 191–192. AAC Ardill is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding cultivar with excellent standability. AAC Ardill is resistant to powdery mildew caused by Erysiphe pisi Syd. It has medium maturity and is adapted to all field pea growing regions in western Canada.

POWDERY MILDEW OF VICIA FABA IN MANITOBA

1977 ◽  
Vol 57 (3) ◽  
pp. 745-749 ◽  
Author(s):  
P. D. KHARBANDA ◽  
C. C. BERNIER
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Vicia Faba ◽  
Morphological Characters ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Leaf Surfaces ◽  
Vicia Faba L ◽  
Faba Beans ◽  
New Hosts

Powdery mildew occurred widely on faba beans (Vicia faba L.) in Manitoba in 1974. Mycelia, and conidia were abundant on both leaf surfaces. The fungus later developed numerous cleistothecia 99–143 μm in diam, with rigid appendages, 128–286 μm in length, dichotomously branched at their apices and ending in recurved tips. Frequently, appendages were contorted and irregularly branched. Cleistothecia contained 5–8 asci. The fungus produced mildew symptoms on Lathyrus ochroleucus Hook., L. odoratus L., L. latifolius L., and Vicia americana Muhl., but failed to infect Lonicera tatarica L., Pisum sativum L., and Syringa vulgaris L. The fungus was identified as Microsphaera penicillata (Wall. ex Fr.) Lév. var. ludens (Salmon) Cooke on the basis of morphological characters and pathogenicity. Lathyrus spp. are new hosts of the fungus. L. ochroleucus and V. americana may be sources of primary inoculum of the fungus in Manitoba. Erysiphe pisi DC. reported to occur on V. faba was not found on any of the specimens.

Susceptibility of apple cultivars to apple scab and powdery mildew in Victoria, Australia

1998 ◽  
Vol 38 (6) ◽  
pp. 625 ◽  
Author(s):  
W. S. Washington ◽  
O. N. Villalta ◽  
J. Ingram ◽  
D. Bardon
Keyword(s):  
Powdery Mildew ◽  
Venturia Inaequalis ◽  
Natural Infection ◽  
Apple Scab ◽  
Podosphaera Leucotricha ◽  
Commercial Cultivars ◽  
Apple Cultivars ◽  
High Level

Summary. Twenty apple cultivars were assessed over 3 seasons for their susceptibility to natural infection with scab (caused by Venturia inaequalis) and powdery mildew (caused by Podosphaera leucotricha). It was evident that a number of important commercial cultivars are highly susceptible to leaf scab (average incidence of leaf scab: Pink Lady, 40.2% of leaves; Lady William, 37.1%; Braeburn, 20.0%; and New Jonagold, 18.7%) and powdery mildew (average incidence of leaf mildew: New Jonagold, 23.0%; Pink Lady, 17.8%). There was a high level of resistance to leaf scab in the cultivars Florina-Quérina, Redfree and Jonafree (all less than 1% incidence on leaves) and to powdery mildew in the cultivar Earlidel (no infection observed). The cultivars Jonathan, Bonza and Red Elstar showed a useful level of resistance to scab (average incidence of leaf scab between 1.6 and 3.2%), while the cultivars Red Fuji, HiEarly and Redfree all showed some resistance to powdery mildew (average incidence of mildew between 2.6 and 5.9%). Observations made on the low and variable numbers of fruit produced by some trees in their third year after planting showed that Pink Lady and Lady William were highly susceptible to fruit scab (67.6 or 57.6% scabbed fruit respectively). Twig infection by scab was also observed on shoots of the current season’s growth of Pink Lady.

Linkage analysis of er-1, a recessive Pisum sativum gene for resistance to powdery mildew fungus (Erysiphe pisi D.C.)

1994 ◽  
Vol 88 (8) ◽  
pp. 1050-1055 ◽  
Author(s):  
G. M. Timmerman ◽  
T. J. Frew ◽  
N. F. Weeden ◽  
A. L. Miller ◽  
D. S. Goulden
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Linkage Analysis ◽  
Erysiphe Pisi ◽  
Powdery Mildew Fungus

AAC Delhi field pea

2021 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Delhi is a semi-leafless, large-seeded yellow field pea (Pisum sativum L.) variety developed at Agriculture and Agri-Food Canada Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has high yielding potential, medium maturity and good lodging resistance. AAC Delhi has the maturity of 95 days, and one-thousand-seed weight of 288 g. AAC Delhi is resistant to powdery mildew (caused by Erysiphe pisi Syd.), and is moderately susceptible to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Delhi is adapted to all field growing regions in western Canada.

AAC Barrhead field pea

2015 ◽  
Vol 95 (6) ◽  
pp. 1277-1278
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debbie McLaren ◽  
Cecil Vera
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Field Pea ◽  
Research Centre ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Pisum Sativum L

Bing, D.-J., Beauchesne, D., McLaren, D. and Vera, C. 2015. AAC Barrhead field pea. Can. J. Plant Sci. 95: 1277–1278. AAC Barrhead is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada (AAFC) Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding cultivar with excellent standability. AAC Barrhead is resistant to powdery mildew caused by Erysiphe pisi Syd. It has medium maturity and is adapted to all field growing regions in western Canada.

Earlystar field pea

2011 ◽  
Vol 91 (6) ◽  
pp. 1115-1116
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Al Sloan ◽  
Debbie McLaren ◽  
Cecil Vera
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Field Pea ◽  
Research Centre ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Early Maturing

Bing, D. J., Beauchesne, D., Sloan, A., McLaren, D. and Vera, C. 2011. Earlystar field pea. Can. J. Plant Sci. 91: 1115–1116. Earlystar is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding and early-maturing cultivar and is resistant to powdery mildew caused by Erysiphe pisi Syd. Earlystar is adapted to all field growing regions in western Canada.

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