Host plant resistance through physico-chemical characters against major insect pests of okra occurring in the Gangetic plains of eastern India

Acharya, Jayadprava; Chatterjee, Snigdhansu; Konar, Amitava; Chattopadhyay, Arup; Mandal, Asit; Dutta, Subrata

doi:10.1080/09670874.2018.1480815

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Improved lines of okra have potential to broaden the genetic variability may improve resistance to these pests. Tolerance of BCO-1 genotype to whitefly and that of Arka Anamika to jassid is based on both antixenotic properties of the genotypes as reported by Acharya et al [38]. In relation host plant, B. tabaci is affected mainly by the following features: (i) the external, physical characteristics of the leaf surface, e.g., hairiness vs. glabrousness, sticky glandular trichomes, leaf shape (okra/super okra) and probably the microclimate as a result of foliage density; and (ii) the internal, chemical characteristics of the leaf, e.g., pH of leaf sap [39].…”

Section: Host Plant Resistancementioning

confidence: 81%

Management Guide of Sucking Insect Pest

Ghosal¹

2022

Agricultural Sciences

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Sap feeders have typically piercing sucking mouthparts through which they suck sap from the plant, and due to this feeding, the plant produces specific symptoms. Their role as transmitting plant viruses is well known and considered a very important factor in achieving a desirable yield. Their small size, ability to develop quick resistance and biotypes make them very difficult to manage. Insecticide is considered the most potent weapon to cope with the sap feeders because of its quick knockdown effect and ease of application. At the same time, its indiscriminate use makes the situation harsh, leading towards the disruption of several ecological phenomena. We have seen a significant increase in honey bee colony collapse disorder in recent years, owing to extensive crop coverage with neonicotinoids. Similarly, the emergence of whitefly and jassids in Bt cotton as the dreadest pests is a result of not following the conservation of refuge strategy. As the crop ecosystem is a centre of multiple interactions between several biotic organisms along with abiotic factors, holistic approaches need to be developed combining cultural, mechanical, physical, biological, biopesticidal, and chemical management incorporating the host plant resistance.

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Section: Host Plant Resistancementioning

confidence: 81%

Management Guide of Sucking Insect Pest

Ghosal¹

2022

Agricultural Sciences

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“…Earlier reports suggested that the genotypes highly resistant to YVMV disease had high density of trichomes than that of the susceptible genotypes (Jamir et al, 2020). Presence of pubescence interferes with the insect oviposition, attachment to the plant, feeding, colonization and ingestion in YVMV‐resistant lines (Acharya et al, 2019; Manju et al, 2021).…”

Section: Discussionmentioning

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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“…Okra has found medical application as a plasma replacement or blood volume expander and is also useful in genito-urinary disorders, spermatorrhoea, and chronic dysentery (Abidia et al, 2014). The most important constraint in okra production is the susceptibility of the crop to various insect pests (Acharya et al, 2018) and viral diseases (Das et al, 2013;Seth et al, 2017). Okra harbours many insects and of which whiteflies, aphids, jassids, thrips, and mites are of great concern being a pest.…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic Analysis of Okra Enation Leaf Curl Virus (OELCV) Transmitted by Bemisia tabaci Using Coat Protein Gene Fragment of OELCV in Tamil Nadu

Pasupathi¹,

Murugan²,

Karthikeyan³

et al. 2022

MAJ

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Okra enation leaf curl virus (OELCV) is a severe emerging disease of okra, Abelmoschus esculentus in India, causes systemic infections and has a very effective mode of transmission by the sweet potato whitefly, Bemisia tabaci; thus, preventing their spread has been made very complicated. It is essential to understand the OELCV isolates to study the disease reactions in plant accessions. The okra OELCV infected young leaves were collected from the Salem (Northwestern Zone) and Madurai (South Zone) of Tamil Nadu and the DNA was extracted and used to amplify the OELCV utilizing specific primers (JKOE34F, JKOE35R) targeting the OELCV coat protein gene and produced a 796 bp band in the polymerase chain reaction (PCR). The homology analysis of nucleotide sequence was carried out using BLAST programme and the results revealed that the Salem region coat protein gene sequence grouped into OELCV clone 6.2, complete genome (MK084768.1) with 99.71% of homology, and Madurai region coat protein gene sequence grouped into OELCV isolate Vijayawada coat protein (AV1) gene complete cds (KT935487.1) with a 99.38% of homology. The amplified OELCV (Salem and Madurai zone) from the study had aligned in the same cluster along with HG938362.1 and KX710156.1. This study had indicated that the OELCV pathogen alike in these zones successfully being transmitted by B. tabaci.

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Host plant resistance through physico-chemical characters against major insect pests of okra occurring in the Gangetic plains of eastern India

Cited by 8 publications

References 20 publications

Management Guide of Sucking Insect Pest

Management Guide of Sucking Insect Pest

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

Phylogenetic Analysis of Okra Enation Leaf Curl Virus (OELCV) Transmitted by Bemisia tabaci Using Coat Protein Gene Fragment of OELCV in Tamil Nadu

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