Black Rot of Crucifers in Thailand

Schaad, N. W.; Thaveechai, N.

doi:10.1094/pd-67-1231

Cited by 19 publications

(11 citation statements)

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“…Chlorotic spots, wilting, and black veins without yellowing also can occur (Schaad and Thaveechai, 1983). Most cultivated crucifers express characteristic V -shaped yellow lesions on the margins of leaves.…”

Section: Disease Symptomsmentioning

confidence: 99%

“…Most cultivated crucifers express characteristic V -shaped yellow lesions on the margins of leaves. The name black rot originates from the occurrence of black, rotting plants; however, in many cases the soft rot is due to secondary invasion by Pseudomonas or Erwinia (Schaad and Thaveechai, 1983). Chlorotic spots, wilting, and black veins without yellowing also can occur (Schaad and Thaveechai, 1983).…”

Section: Disease Symptomsmentioning

confidence: 99%

“…Many species of cultivated crucifers are susceptible to infection, including cabbage, broccoli, cauliflower, Chinese cabbage, kale, rutabaga and Brussels sprouts Chupp and Sherf, 1960). Black rot is widespread in crucifer fields in the USA Chupp and Sherf, 1960;Hunter et aI., 1975;Schaad, 1976a;Alvarez et al, 1985), Asia (Schaad and Thaveechai, 1983;Kim, 1986), India (Patel et al, 1949) and Africa (On sando, 1987) when the weather is favourable for disease. The pathogen was shown to be seedborne in 1904, and transmission of the pathogen by seed was demonstrated in 1921 .…”

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Xanthomonas

1993

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Section: Disease Symptomsmentioning

confidence: 99%

Section: Disease Symptomsmentioning

confidence: 99%

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Xanthomonas

1993

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“…campestris, is known in most major agricultural countries in the world, including Thailand. Several cruciferous crops, including cabbage, cauliflower and broccoli, are important in Thailand (Schaad & Thaveechai, 1983). Bacterium colonizes in the vascular system and the characteristic black rot system in V-shaped lesion at leaf margins with black veins, chlorosis and necrosis (Kocks & Zadoks, 1996).…”

Section: Introductionmentioning

confidence: 99%

Planting Times and Varieties on Incidence of Bacterial Disease and Yield Quality of Broccoli during Rainy Season in Southern Thailand

Nooprom¹,

Santipracha²

2013

MAS

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The aims of this study were to determine the effect of planting times and varieties on incidence of bacterial disease and yield quality of broccoli grown during rainy season in southern Thailand. The research was carried out at Prince of Songkla University from July, 2011 to January, 2012. The design was a split-plot in a randomized complete block with four replications. The result showed that the Yok Kheo grown in July was observed with the lowest incidence of soft rot disease of 27.68% while the highest incidence of 80.11% was found in the Top Green when planting in November. In July, all varieties of broccoli had not been affected by black rot disease. After that, their incidences increased when planting between August and December. The four broccoli varieties had the highest disease incidence of 87.42-97.57% when planting in October, followed by September, November and December of 74.72-94.97%. The Yok Kheo had the highest yield quality when planting in July and December with total yield of 4.70-5.29 t/ha. It is an interesting new hybrid variety. It gave higher yield quality than Top Green which is popular variety grown in southern Thailand.

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“…The seedborne pathogen can survive in crop debris or crucifer weeds (Schaad and White , Alvarez and Cho , Schaad and Dianese ). In B. rapa , the disease can be serious in turnip and turnip greens (Vicente ) and it has also been reported in Chinese cabbage (Schaad and Thaveechai , Ignatov et al. ).…”

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Screening for resistance to black rot in a Spanish collection of Brassica rapa

et al. 2015

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Productivity and quality of crops of Brassica rapa L. in north‐western of Spain are highly affected by black rot, caused by the bacterium Xanthomonas campestris pv. campestris (Pammel) Dowson (Xcc). Several races of Xcc have been described in this area, being the race 6 the most frequent in B. rapa crops and races 1 and 4 the most frequent in B. oleracea crops. The control of the disease can be aided by the employment of resistant varieties. The aim of this work was to find sources of resistance to Xcc in a collection of open‐pollinated varieties of B. rapa from north‐western Spain. Resistance was evaluated in 191 landraces. Partial resistance to races 6, 1 and 4 and complete resistance to race 4 were identified in several landraces. Several accessions exhibited partial resistance to the three races. Sources of resistance were identified in landraces of different crops of the species (turnips, turnip greens and turnip tops). These landraces could be grown after selection for resistance or they can be donors of resistance genes in breeding programmes.

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Black Rot of Crucifers in Thailand

Cited by 19 publications

References 0 publications

Xanthomonas

Xanthomonas

Planting Times and Varieties on Incidence of Bacterial Disease and Yield Quality of Broccoli during Rainy Season in Southern Thailand

Screening for resistance to black rot in a Spanish collection of Brassica rapa

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