Vascular Wilt of Roselle (Hibiscus sabdariffa L. var. sabdariffa)
in the Humid Forest Region of South-western Nigeria

Amusa, N. A.; Adegbite, A. A.; ., M.O. Oladapo

doi:10.3923/ppj.2005.122.125

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…Amusa [3] reports a foliar blight caused by Phyllosticta hibisci in tropical forest region of southwestern Nigeria. Vascular Wilt of the plant caused by Fusarium oxysporium was also reported in the South-Western Nigeria by Amusa; Adegbite and Oladapo [4]. Apart from these diseases, Roselle plant suffers from a leaf spot disease which happens to be the most dangerous disease around Makurdi, Nigeria.…”

Section: Introductionmentioning

confidence: 81%

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (Hibiscus sabdariffa L.) Leaf Spot Disease Caused by Coniella musaiensis Var. Hibisci. in Makurdi, Central Nigeria

Apeyuan¹,

Nwankiti²,

Oluma³

et al. 2016

GEP

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A study on the comparative effect of cow dung, wood ash and benlate for the control of leaf spot disease of Roselle (Hibiscus sabdariffa L.) was carried out following the preparation and foliar application of the materials on selected Roselle plants of the green and red accessions (Acc1 & Acc3) in the field. The cow dung was fermented for 14 days while sour milk was added to wood ash, dissolved and all filtered and labeled. The spraying commenced soon after the plants were thinned to one and was done weekly until after 50% of the plants had flowered. Results showed significant (p = 0.05) difference between benlate, the synthetic fungicide and the bio-fertilizers (cow dung and wood ash) for the two years of the study. Disease severity was significantly lower in the benlate than in the bio-fertilizers. There was no significant difference in yield between the treatments although higher yield was recorded in benlate. Though the bio-fertilizers could not suppress infection, they aided the growth of the plants by boosting luxuriant growth. The result showed that these bio-fertilizers cannot be used as substitute to the synthetic fungicide for the control of this leaf spot disease caused by Coniella musaiensis var. hibisci. However, since they give equally good yield the bio-fertilizers can still be used to minimize the reliance upon use of chemical fungicides.

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Section: Introductionmentioning

confidence: 81%

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (Hibiscus sabdariffa L.) Leaf Spot Disease Caused by Coniella musaiensis Var. Hibisci. in Makurdi, Central Nigeria

Apeyuan¹,

Nwankiti²,

Oluma³

et al. 2016

GEP

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“…The causative agent of roselle wilt disease is yet to be identified in Taiwan, but it has been reported in several countries such as the United States, Malaysia, Mexico, Nigeria, and Egypt. For example, F. oxysporum causes vascular wilt on roselles in the United States and Malaysia ( Ooi and Salleh, 1999 ; Ploetz et al, 2007 ); Phytophthora parasitica causes crown rot (black foot) along with necrosis at the bases of the stems as well as foliar wilt and death of roselles in Mexico ( Estrada et al, 2001 ); F. oxysporum causes vascular wilt and stem blight on roselles in Nigeria ( Amusa et al, 2005 ); F. solani and Macrophomina phaseolina cause roselle wilt; and F. oxysporum causes pre-emergence damping off on roselles in Egypt ( Hassan et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Detection of Pathogenic and Beneficial Microbes for Roselle Wilt Disease

Wang

et al. 2021

Front. Microbiol.

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Wilt disease of roselle (Hibiscus sabdariffa L.) is common in Taiwan; however, the causative agent remains unknown. The stems of wilted roselle are browned, slightly constricted, and covered by white aerial hyphae, suggesting that potential pathogens may originate from soil. To identify the potential pathogens, we conducted a rhizosphere microbiota survey in phenotypically healthy and diseased plants through fungal internal transcribed spacer (ITS) and bacterial 16S rRNA amplicon sequencing for uncovering the microbial compositions in the roselle rhizosphere. The fungal family Nectriaceae exhibited significantly higher abundance in diseased rhizospheres than in healthy rhizospheres, and this bacterial community was more specific to geography (i.e., plot-dependent) than to rhizosphere disease status. However, a few bacterial groups such as Bacilli were associated with the healthy rhizosphere. Fusarium species were the most dominant species of Nectriaceae in the survey and became the main target for potential pathogen isolation. We successfully isolated 119 strains from diseased plants in roselle fields. Koch’s postulates were used to evaluate the pathogenicity of these strains; our results indicated that Fusarium solani K1 (FsK1) can cause wilting and a rotted pith in roselles, which was consistent with observations in the fields. This is the first demonstration that F. solani can cause roselle wilt in Taiwan. Furthermore, these newly isolated strains are the most dominant operational taxonomic units detected in ITS amplicon sequencing in diseased rhizospheres, which serves as further evidence that F. solani is the main pathogen causing the roselle wilt disease. Administration of Bacillus velezensis SOI-3374, a strain isolated from a healthy roselle rhizosphere, caused considerable anti-FsK1 activity, and it can serve as a potential biocontrol agent against roselle wilt disease.

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“…Actually, H. sabdariffa is cultivated in all tropical and semi-tropical regions. In tropical Africa, it is known in particular in the savannah zones of West and Central Africa [19]. The species exists in two varieties, one with green leaves and the other with red leaves [20].…”

Section: Introductionmentioning

confidence: 99%

Mineral elements analysis and total flavonoids content in the fresh leaves from two varieties of Hibiscus sabdariffa L. consumed as vegetable in Lubumbashi (DR Congo)

Shakalenga¹,

Mboni²,

Nkulu³

et al. 2021

World J. Adv. Res. Rev.

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Fresh leaves of sorrel (Hibiscus sabdariffa L.) are among the most consumed vegetables in the Lubumbashi in the Democratic Republic of Congo (DR Congo). According to the literature, this vegetable shows the chemical variability depending on the culture area. Two varieties of this species, cultivated and consumed in Lubumbashi have not yet been studied for their micronutrient content, of which fruits and vegetables are the main sources. This study investigated the mineral and total flavonoid content of fresh leaves from red and green varieties of H. sabdariffa L., consumed as a vegetable in the aforementioned city. Fresh leaves of red and green variety of H. sabdariffa were purchased in 10 main markets of the Lubumbashi city. Gravimetric and spectrophotometric methods were used for analyzes of water, mineral and total flavonoids content. Three of the major mineral elements (Na, Ca, Mg) and several trace elements (Cu, Zn, Fe, Mn, Se, Co, Cr) were found in both varieties in elevated quantity in leaves of red variety. These latter were marked by a high content of iron (7 mg/100 g of fresh material) and Manganese (600 µg/100 g of fresh material). Total flavonoids quantification revealed that the leaves of red variety have a high value (28.2 ± 0.3 mg Quercetin Equivalent per g of extract) in total flavonoids compared to the leaves of green variety. Fresh leaves of the red variety of H. Sabdariffa consumed in Lubumbashi could be a source of iron for adults and manganese for children.

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Vascular Wilt of Roselle (Hibiscus sabdariffa L. var. sabdariffa) in the Humid Forest Region of South-western Nigeria

Cited by 14 publications

References 4 publications

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (<i>Hibiscus sabdariffa</i> L.) Leaf Spot Disease Caused by <i>Coniella musaiensis</i> Var. <i>Hibisci</i>. in Makurdi, Central Nigeria

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (<i>Hibiscus sabdariffa</i> L.) Leaf Spot Disease Caused by <i>Coniella musaiensis</i> Var. <i>Hibisci</i>. in Makurdi, Central Nigeria

Detection of Pathogenic and Beneficial Microbes for Roselle Wilt Disease

Mineral elements analysis and total flavonoids content in the fresh leaves from two varieties of Hibiscus sabdariffa L. consumed as vegetable in Lubumbashi (DR Congo)

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Vascular Wilt of Roselle (Hibiscus sabdariffa L. var. sabdariffa) in the Humid Forest Region of South-western Nigeria

Cited by 14 publications

References 4 publications

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (&lt;i&gt;Hibiscus sabdariffa&lt;/i&gt; L.) Leaf Spot Disease Caused by &lt;i&gt;Coniella musaiensis&lt;/i&gt; Var. &lt;i&gt;Hibisci&lt;/i&gt;. in Makurdi, Central Nigeria

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (&lt;i&gt;Hibiscus sabdariffa&lt;/i&gt; L.) Leaf Spot Disease Caused by &lt;i&gt;Coniella musaiensis&lt;/i&gt; Var. &lt;i&gt;Hibisci&lt;/i&gt;. in Makurdi, Central Nigeria

Detection of Pathogenic and Beneficial Microbes for Roselle Wilt Disease

Mineral elements analysis and total flavonoids content in the fresh leaves from two varieties of Hibiscus sabdariffa L. consumed as vegetable in Lubumbashi (DR Congo)

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Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (<i>Hibiscus sabdariffa</i> L.) Leaf Spot Disease Caused by <i>Coniella musaiensis</i> Var. <i>Hibisci</i>. in Makurdi, Central Nigeria

Comparative Effect of Foliar Application of Cow Dung, Wood Ash and Benlate on the Disease Initiation and Development of Roselle (<i>Hibiscus sabdariffa</i> L.) Leaf Spot Disease Caused by <i>Coniella musaiensis</i> Var. <i>Hibisci</i>. in Makurdi, Central Nigeria