Evaluation of okra genotypes against yellow vein mosaic disease (YVMD)

Mathew, Anu; Pradeepkumar, T.; Minimol, J. S.; Cherian, K. Anita; Kutty, M. Sangeeta

doi:10.1007/s42360-021-00457-6

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…During the survey, diagnosis was based only on visual symptom expression and sequence analysis. Yellowing of vein encircling green tissue is a known characteristic symptom of the disease (Bhagat et al 2001). Moreover, sequencing results confirmed the presence of the virus.…”

Section: Discussionmentioning

confidence: 67%

Prevalence of Okra Yellow Vein Mosaic Viral Disease and its Correlation with Vector Population in Sindh, Pakistan

Kumbhar,

Hajano,

Sayed

et al. 2023

JMS

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Okra (Abelmoschus esculentus (L.) Moench) being an important vegetable crop is widely grown in tropical and subtropical regions of the world. Whitefly (Bemisia tabaci) is not only a major insect pest of okra in Pakistan but also the vector insect of Begomoviruses including okra yellow vein mosaic virus which causes okra yellow vein mosaic viral disease (OYVMVD). Regional monitoring of insect vectors and disease prevalence is being emphasized for proper management, therefore this study was focused on determining the intensity of OYVMVD in the fields and the correlation between the disease and vector population. For this purpose, the virus infection was confirmed with DNA sequencing. The disease and vector population was visually assessed approximately 65-70 days after sowing of okra under field conditions at commercial farmer fields in district viz., Hyderabad, Tando Allahyar, Matiari, and Sanghar of Sindh, Pakistan during the growing season of 2016. Ten okra plants with three replications (N = 30) at ten different locations of each district were assessed. Results of nucleotide alignment of DNA amplified from diseased plants confirmed that yellowing and vein clearing were due to the virus infection. The visual assessment showed that the disease was prevailing throughout all region monitored in this study and the disease was significantly correlated with the vectors population. However, maximum disease incidence and severity were recorded in Tando Allahyar. Therefore, it is recommended to validate various management practices at such high disease risk points for better management

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Section: Discussionmentioning

confidence: 67%

Prevalence of Okra Yellow Vein Mosaic Viral Disease and its Correlation with Vector Population in Sindh, Pakistan

Kumbhar,

Hajano,

Sayed

et al. 2023

JMS

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“…The isolated putative mutant families exhibiting resistance under natural field conditions were further evaluated under caged conditions along with Pusa Sawani using whitefly mediated artificial inoculation of YVMV as per Mathew et al (2022) keeping 20 seedlings (15 days old) per genotype. Whiteflies were reared under insect proof cages for 30–45 days on cucumber ( Cucumis sativus L.).…”

Section: Methodsmentioning

confidence: 99%

Isolation of yellow vein mosaic virus (YVMV)‐resistant mutants of okra (Abelmoschus esculentus L.) through applied mutagenesis

Hazra,

Gorai,

Roy

et al. 2023

Plant Breeding

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Okra, Abelmoschus esculentus (L.) Moench, being highly susceptible to yellow vein mosaic virus (YVMV) disease warrants its genetic improvement for resistance. Applied mutagenesis programme using two optimum doses of gamma radiation, namely, 350 Gy and 450 Gy radiation, was administered for the variety Pusa Sawani rated as excellent for fruit quality but highly susceptible to YVMV disease. Two selected putative mutant families, namely, 350//10///3‐9////28 and 450//66///2‐4////39, isolated in the M5 generation with slightly different plant morphology as compared to the parental genotype, Pusa Sawani, showed consistent resistance against YVMV disease. Upon evaluation in the M6 generation, eight morphological characteristics and five quantitative characteristics differed significantly among the mutants and Pusa Sawani. Proximate compositions and enzyme activity in leaf were significantly higher in the two YVMV‐resistant mutants. Disease screening under artificial inoculation in the insect proof cages confirmed YVMV resistance in these mutants. DNA fingerprinting further validated the alterations occurred in these two isolated mutants compared to the parental genotype. These mutants deserve due attention towards the development of YVMV‐resistant variety.

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Evaluation of okra genotypes against yellow vein mosaic disease (YVMD)

Cited by 2 publications

References 8 publications

Prevalence of Okra Yellow Vein Mosaic Viral Disease and its Correlation with Vector Population in Sindh, Pakistan

Prevalence of Okra Yellow Vein Mosaic Viral Disease and its Correlation with Vector Population in Sindh, Pakistan

Isolation of yellow vein mosaic virus (YVMV)‐resistant mutants of okra (Abelmoschus esculentus L.) through applied mutagenesis

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