Influence of time of transition from night to day temperature regimes on incidence of Didymella bryoniae and influence of the disease on growth and yield of glasshouse cucumbers

Steekelenburg, N.A.M. van

doi:10.1007/bf01997966

Netherlands Journal of Plant Pathology

1985

DOI: 10.1007/bf01997966

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Influence of time of transition from night to day temperature regimes on incidence of Didymella bryoniae and influence of the disease on growth and yield of glasshouse cucumbers

N.A.M. van Steekelenburg¹

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Cited by 10 publications

(12 citation statements)

References 7 publications

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“…(Keinath et al, 1995). The disease has also been reported in Europe (Frantz and Jahn, 2004;van Steekelenburg, 1985), Asia (Wako et al, 2002), and elsewhere (Bruton, 1998).…”

mentioning

confidence: 91%

Resistance to Gummy Stem Blight in Melon (Cucumis melo L.) Germplasm and Inheritance of Resistance from Plant Introductions 157076, 420145, and 323498

Wolukau¹,

Zhou²,

Li³

et al. 2007

horts

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Gummy stem blight incited by the fungus Didymella bryoniae is a major disease of melons worldwide. The objectives of the present study were to critically evaluate melon (Cucumis melo L.) germplasm for resistance to D. bryoniae and to characterize the genetics of resistance in the resistant accessions. Two hundred sources of germplasm (plant introduction accessions, cultivars, breeding lines, landraces, and wild relatives) were screened against a single highly virulent isolate (IS25) of D. bryoniae in a plastic tunnel. The genetics of resistance to D. bryoniae was studied in three crosses between plant introductions 157076, 420145, and 323498, resistant parents that were fairly adapted (flowering, fruiting, powdery mildew tolerance) to Nanjing conditions, and plant introductions 268227, 136170, and NSL 30032 susceptible parents, respectively. Six populations of each cross (susceptible parent, resistant parent, F1, F2, the two reciprocal backcrosses) were analyzed for their responses to D. bryoniae. Seedlings in both studies were inoculated with a spore suspension (5 × 105 spores/mL−1) of D. bryoniae at the four to six true-leaf stages and assessed for leaf and stem damage at 7, 14, and 21 d postinoculation. Results of germplasm screening indicated most germplasms reported as resistant elsewhere were confirmed resistant under our conditions. However, some plant introductions identified as highly resistant elsewhere were susceptible under our conditions, the most interesting being plant introduction 482399. This plant introduction that was considered resistant was highly susceptible in our study. We also identified other sources of resistance not reported previously, for example, JF1; a wild Cucumis from the highlands of Kenya was rated highly resistant. Analysis of segregation of F1, F2, and backcross generations of the three crosses indicated that each of the three plant introductions carry a single dominant gene for resistance to the D. bryoniae.

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“…(Keinath et al, 1995). The disease has also been reported in Europe (Frantz and Jahn, 2004;van Steekelenburg, 1985), Asia (Wako et al, 2002), and elsewhere (Bruton, 1998).…”

mentioning

confidence: 91%

Resistance to Gummy Stem Blight in Melon (Cucumis melo L.) Germplasm and Inheritance of Resistance from Plant Introductions 157076, 420145, and 323498

Wolukau¹,

Zhou²,

Li³

et al. 2007

horts

View full text Add to dashboard Cite

show abstract

“…incidence and severity of damage due to gummy stem blight on cucumber is second only to those of root knot nematode in North Carolina (St. Amand and Wehner, 1991). Gummy stem blight is a serious disease of greenhouse cucumber in The Netherlands, where it causes fruit rot (black rot) (Punithalingam and Holliday, 1972;Van Steekelenburg, 1985a). Cucumber plants may be infected at any growth stage from seedling to mature fruit, and infection can occur on all plant parts, including roots (Thinggaard, 1987).…”

mentioning

confidence: 99%

“…Van Steekelenburg (1985a) reported that late-morning transition to day temperature settings in the greenhouse caused a higher incidence of main stem lesions and internal fruit rot from D. bryoniae on cucumber compared with early-morning transition. This was attributed to longer duration at high humidity, and to water condensation on fruits.…”

mentioning

confidence: 99%

Screening the Cucumber Germplasm Collection for Resistance to Gummy Stem Blight in North Carolina Field Tests

Wehner¹,

Shetty²

2000

HortSci

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Gummy stem blight (Didymella blight), caused by Didymella bryoniae (Auersw.) Rehm and its anamorph Phoma cucurbitacearum (Fr.:Fr.) Sacc., is the second most important disease of cucumber (Cucumis sativus L.) in North Carolina after root knot nematodes Meloidogyne sp. Both Didymella blight and Phoma blight, caused by Phoma exigua Desm., have similar symptoms and control practices, and are generally referred to as gummy stem blight. In order to determine whether resistance existed to North Carolina isolates of D. bryoniae, 851 cultigens [cultivars, breeding lines, and plant introduction (PI) lines] were evaluated in the field. Plants were inoculated with one selected isolate (highly pathogenic in preliminary greenhouse tests) at the vine tip-over stage. They were rated for foliage lesion size and number on a 0 to 9 visual scale (0 = no disease, 9 = plant killed) and average ratings for 10 plants per plot were analyzed. The ratings ranged from 2.0 (highly resistant) to 8.5 (highly susceptible) with a mean of 6.2. The most resistant breeding lines and PI accessions were PI 200815, PI 390243, `LJ 90430', PI 279469, and PI 432855. The most resistant cultivars were `Homegreen #2', `Little John', `Transamerica', and `Poinsett 76'. The most susceptible cultigens in the study were PI 288238, PI 357843, PI 357865, and PI 167134. Two popular cultivars in North Carolina, `Calypso' and `Dasher II', were moderately resistant.

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“…Wounding was essential for infection of older leaves (Van Steekelenburg, 1985b). More lesions on the fruit and main stem were also apparent in plants that were grown for extended periods in high humidity or with free water on fruit (Van Steekelenburg, 1985a).…”

mentioning

confidence: 99%

“…Gummy stem blight causes severe defoliation in late production stages and is the second most important cucumber pathogen in North Carolina, following the root-knot nematode (St. Amand and Wehner, 1991). Gummy stem blight is a serious disease of greenhouse-grown cucumbers in The Netherlands, where it causes fruit rot (Van Steekelenburg, 1985a). Chemical control is available but is ineffective under certain environmental conditions, such as extended rainy periods.…”

mentioning

confidence: 99%

Field Tests for Cucumber Resistance to Gummy Stem Blight in North Carolina

Wehner¹,

Amand²

1993

HortSci

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Gummy stem blight [Didymella bryoniae (Auersw.) Rehm] is the second most important pathogen of field-grown cucumbers (Cucumis sativus L.) in North Carolina and a severe problem for greenhouse-grown cucumbers worldwide. To determine whether resistance exists under North Carolina field conditions, 83 cultigens [cultivars, breeding lines, and plant introduction (PI) accessions] were evaluated in the field for 4 years for their resistance to a mixture of D. bryoniae isolates. Plants were inoculated at the vine tip-over stage and rated for foliar lesion size and number. Cultigens identified as resistant in Wisconsin and The Netherlands were not resistant in North Carolina. When averaged over years and locations, the most resistant C. sativus cultigens were PI 164433, `Slice', PI 390264, M 17, and M 12. Several accessions of related Cucumis species were highly resistant: PI 299568 (C. myriocarpus Naud.), PI 282450 (C. zeyheri Sond.), PI 299572 (C. myriocarpus), and PI 233646 (C. anguria L.). The most susceptible cultivars were `Colet', `Meresto', `Supergreen', `Dura', `Pioneer', `Marketmore 76', `Pickmore', and `Addis'. `Calypso' and `Dasher II', popular cultivars in North Carolina, were moderately susceptible.

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Influence of time of transition from night to day temperature regimes on incidence of Didymella bryoniae and influence of the disease on growth and yield of glasshouse cucumbers

Cited by 10 publications

References 7 publications

Resistance to Gummy Stem Blight in Melon (Cucumis melo L.) Germplasm and Inheritance of Resistance from Plant Introductions 157076, 420145, and 323498

Resistance to Gummy Stem Blight in Melon (Cucumis melo L.) Germplasm and Inheritance of Resistance from Plant Introductions 157076, 420145, and 323498

Screening the Cucumber Germplasm Collection for Resistance to Gummy Stem Blight in North Carolina Field Tests

Field Tests for Cucumber Resistance to Gummy Stem Blight in North Carolina

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