Evaluations of shallot genotypes for resistance against fusarium basal rot (Fusarium oxysporum f. sp. cepae) disease

Sintayehu, Assefa; Fininsa, Chemeda; Ahmed, Seid; Sakhuja, P. K.

doi:10.1016/j.cropro.2011.04.011

Cited by 10 publications

(8 citation statements)

References 6 publications

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“…The Disease Index determination was developed based on including modifying the disease index developed by [7] which identifies the twisting disease caused by Colletotrichum and Fusarium in Allium cepa sp. In addition, the determination of symptoms for disease scoring is also referred on Fusarium symptoms on Allium sp by [8]; and also referred to the method of determining the scoring of Fusarium disease in banana plants developed by [9].…”

Section: Disease Incidence Disease Severity and Criteria Of Resistancementioning

confidence: 99%

“…: Disease Severity Index based on Newly Emerged Buds and Disease Severity Index based on Leaves Symptom. While the criteria of disease resistance was determined according to [8] with modification. The three defining criteria for the disease index are presented in tables 1, 2 and 3.…”

Section: Disease Incidence Disease Severity and Criteria Of Resistancementioning

confidence: 99%

“…In order to evaluate and analyze the resistance of shallots against FOC in this study, a method of determining the Disease Index (DI) has been developed. The Disease Index in this study was developed as the improvement or modification from those developed by [7] and [8]. The consideration of developing method for determining the DI was because the symptoms of FOC disease which infested the shallots in Indonesia has specific symptoms and different from FOC strain which were reported from other countries.…”

Section: Response Of Shallots Infected By Focmentioning

confidence: 99%

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The Causal Agent of Fusarium Disease Infested Shallots in Java Islands of Indonesia

2021

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The success of disease control is largely determined by the validity of information about the type of causal-pathogen. Fusarium oxysporum f. sp. cepae (FOC) was reported to attack shallots and cause leaf twisting disease in Indonesia. We have conducted researches to investigate the causal agent of Fusarium disease and carried out growth tests on nine genotypes of shallots to determine the disease severity and disease indexes, and the correlation between diseases several agronomic traits. Thirty-five strains of Fusarium spp were isolated from wilted shallots tree and bulbs. Based on morphological characterization and rapid test to the isolates, they were identified as F oxysporum, F verticillioides, F solani and F proliferatum. The shallot genotypes that showed a tolerant response to FOC isolates tested were only Sumenep variety. Mentes, Tajuk, Batu Ijo, and Bima Brebes varieties show susceptible response.

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Section: Disease Incidence Disease Severity and Criteria Of Resistancementioning

confidence: 99%

Section: Disease Incidence Disease Severity and Criteria Of Resistancementioning

confidence: 99%

Section: Response Of Shallots Infected By Focmentioning

confidence: 99%

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The Causal Agent of Fusarium Disease Infested Shallots in Java Islands of Indonesia

2021

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“…cepa and cultivated worldwide. Information about FBR resistance mechanisms about shallot is lacking and has been investigated only recently [32][33][34].…”

Section: Pi 656956 ('S015')mentioning

confidence: 99%

Screening of USDA Onion Germplasm for Fusarium Basal Rot Resistance

Mandal

Cramer

2021

Horticulturae

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Fusarium basal rot (FBR) caused by Fusarium oxysporum f. sp. cepae (FOC) is a major threat to onion (Allium cepa L.) production and marketing worldwide. Finding new sources of FBR-resistance to develop synthetic cultivars is a priority for onion breeders. As there are no FBR-resistant short-day onion cultivars, 85 U.S. National Plant Germplasm System plant introduction onion accessions that originated from 23 different countries were screened for their FBR susceptibility. To compare FBR susceptibility of these accessions at their seedling and mature bulb stages, a susceptible check cultivar, NuMex Crimson, a partially resistant check cultivar, Serrana and its selected population, Serrana-sel, were included in the study. The seedling screening was performed after inoculating silica-sand media with a virulent FOC isolate ‘CSC-515’ at 1.0 × 104 macroconidia g−1 of sand. Each entry was evaluated twice in growth chambers, and percent survival was adjusted to the number of seedlings that germinated in the uninoculated trays. Mature bulbs produced in the field were screened by inoculating transversely cut basal plates with potato dextrose agar plugs containing spores of the same isolate at 3.0 × 104 macroconidia mL−1. FBR severity and incidence were then calculated after 20 days of incubation. Significant variation was found among the accessions for FBR-susceptibility (p < 0.001) at both the seedling and the mature bulb stages. Two sets of 18 accessions were identified either for their higher seedling survival or higher mature bulb FBR-resistance compared to the checks. Among them, PI 256326 (‘Baia Periforme’, the originator cultivar of ‘Serrana’) had a higher seedling survival than both the checks, and a lower mature bulb severity than the susceptible check. Another accession, PI 656956 (‘S015’), exhibited higher seedling survival than the susceptible check and a low FBR severity (4.3 on a 1 to 9 scale) and incidence (41.7%). These two accessions, which were known previously for their high intra-population heterogeneity and root or bulb resistance for FBR, respectively, show promise for incorporating FBR-resistance into short-day onion cultivars. The cultivar rankings could vary in future studies with a range of FOC isolates due to a high cultivar × isolate interaction as observed in past studies.

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“…Fusarium oxysporum f. sp. cepae is particularly harmful and causes Fusarium basal rot which progresses from a slight discoloration to a total necrosis of the basal plate and bulb scales (Sintayehu et al 2011;Taylor et al 2013). In recent years, Fusarium disease of onion is become very common in Poland due to climate changes, with hot summers and heavy rainfalls in particular.…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Brassicaceae Plant Materials Added to the Soil on the Population of FUSARIUM SOLANI (Mart.) SACC. and FUSARIUM OXYSPORUM Schlecht

Smolińska

Kowalczyk

2014

Journal of Horticultural Research

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Soil with the spores of fungi in dormant stage from previous years infections belonging to the genus Fusarium caused significant loss of onion yield in Poland. The most important form of Fusarium inoculum in the field are chlamydospores, which may survive in soil for many years. There are no available methods to eradicate chlamydospores from soil environment. Inspired by data from the literature and own prelimi–nary observation, we evaluated the effect of application of Brassicaceae plant material to the soil infested with F. oxysporum and F. solani isolates, which are pathogenic to onion. Obtained results showed that addition of fresh plant material from B. juncea and B. alba had no effect on amount of Fusarium propagules in the soil. Moreover amendment of infested soil with dry plants or milled seeds of B. juncea or B. nigra significantly stimulated the population of Fusarium in the soil.

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Evaluations of shallot genotypes for resistance against fusarium basal rot (Fusarium oxysporum f. sp. cepae) disease

Cited by 10 publications

References 6 publications

The Causal Agent of Fusarium Disease Infested Shallots in Java Islands of Indonesia

The Causal Agent of Fusarium Disease Infested Shallots in Java Islands of Indonesia

Screening of USDA Onion Germplasm for Fusarium Basal Rot Resistance

The Impact of the Brassicaceae Plant Materials Added to the Soil on the Population of FUSARIUM SOLANI (Mart.) SACC. and FUSARIUM OXYSPORUM Schlecht

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