Jasti Sri Vishnu Murthy, N. S. Satpute, D. Undirwade, S. Bhalkare
A study was carried out with neem-based insecticides, viz., azadirachtin (0.03%EC, 0.15%EC, 0.3%EC, 1%EC), neem seed oil (1, 2 and 3%), neem seed extract 5% and dashparni ark (ten plant leaf extract) 4%, on Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae) adults using the thin film residue method under laboratory conditions. After coating glass vials with neem-based insecticides, the adults of T. bactrae were released on the first, fifth, and tenth days of coating and the mortality was assessed. Among all neem-based insecticides, azadirachtin 1%EC was observed to be harmful to adults of T. bactrae on the first, fifth and tenth days. In contrast, neem seed extract 5% and dashparni ark 4% were found safe.
{"title":"Residual Toxicity of Neem-Based Insecticides against Egg Parasitoid Trichogrammatoidea bactrae Nagaraja","authors":"Jasti Sri Vishnu Murthy, N. S. Satpute, D. Undirwade, S. Bhalkare","doi":"10.55446/ije.2024.1592","DOIUrl":"https://doi.org/10.55446/ije.2024.1592","url":null,"abstract":"A study was carried out with neem-based insecticides, viz., azadirachtin (0.03%EC, 0.15%EC, 0.3%EC, 1%EC), neem seed oil (1, 2 and 3%), neem seed extract 5% and dashparni ark (ten plant leaf extract) 4%, on Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae) adults using the thin film residue method under laboratory conditions. After coating glass vials with neem-based insecticides, the adults of T. bactrae were released on the first, fifth, and tenth days of coating and the mortality was assessed. Among all neem-based insecticides, azadirachtin 1%EC was observed to be harmful to adults of T. bactrae on the first, fifth and tenth days. In contrast, neem seed extract 5% and dashparni ark 4% were found safe.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"258 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A field investigation was carried out at the Central research Farm, Gayeshpur, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal during rabi 2021-2022 to study the seasonal incidence of the major sucking pests infesting the summer groundnut. The silverleaf whitefly (Bemisia tabaci Genn.), jassids (Empoasca kerri Pruthi), black aphids (Aphis craccivora Koch) and flower thrips (Megalurothrips usitatus Bagnall) were considered as the major sucking pests; B. tabaci was first observed on the 49th standard meteorological week, whereas M. usitatus, E. kerri and A. craccivora were first seen during the 5th, 6th and 7th standard meteorological week. The whitefly population showed a significant negative correlation (-0.586) with average temperature, while the thrips showed a significant negative correlation (-0.578) with average relative humidity.
{"title":"Population Dynamics of Major Sucking Pests Infesting Rabi Groundnut in West Bengal","authors":"Soumik Dey Roy, A. Mukhopadhyay","doi":"10.55446/ije.2024.1736","DOIUrl":"https://doi.org/10.55446/ije.2024.1736","url":null,"abstract":"A field investigation was carried out at the Central research Farm, Gayeshpur, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal during rabi 2021-2022 to study the seasonal incidence of the major sucking pests infesting the summer groundnut. The silverleaf whitefly (Bemisia tabaci Genn.), jassids (Empoasca kerri Pruthi), black aphids (Aphis craccivora Koch) and flower thrips (Megalurothrips usitatus Bagnall) were considered as the major sucking pests; B. tabaci was first observed on the 49th standard meteorological week, whereas M. usitatus, E. kerri and A. craccivora were first seen during the 5th, 6th and 7th standard meteorological week. The whitefly population showed a significant negative correlation (-0.586) with average temperature, while the thrips showed a significant negative correlation (-0.578) with average relative humidity.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"997 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140467576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Host selection sequence of two parasitoids of under the genus Xanthopimpla Saussure viz., Xanthopimpla flavolineata (Xf) Cameron [Xf] and X. stemmator (Thunberg) (Xs) and suitability of various pupal stages of Sesamia inferens as a factitious host for rearing was investigated. There was no significant difference in egg laying between the single and repeated attempts by both Xf and Xs. The probing time of Xf and Xs in the rice stem with concealed host (2.26± 0.10 and 1.60± 0.13 min) and a hollow stem without a host was found to be 1.19± 0.14 and 0.59± 0.15 min, respectively. However, Xs did not parasitize the naked pupa. The number of ovipositor insertions was 1.50± 0.17 in concealed pupae and 0.92± 0.15 in hollow stem without host. Among the stages of S. inferens pupae tested for acceptance by Xf and Xs, the prepupa was preferred the most followed by one- and two-day-old pupa, while five- and six-day-old pupae were not preferred.
{"title":"Host Preference of Xanthopimpla Saussure Parasitising Sesamia inferens Walker","authors":"C. Kathirvelu, S. Manickavasagam, L. Gopianand","doi":"10.55446/ije.2024.1406","DOIUrl":"https://doi.org/10.55446/ije.2024.1406","url":null,"abstract":"Host selection sequence of two parasitoids of under the genus Xanthopimpla Saussure viz., Xanthopimpla flavolineata (Xf) Cameron [Xf] and X. stemmator (Thunberg) (Xs) and suitability of various pupal stages of Sesamia inferens as a factitious host for rearing was investigated. There was no significant difference in egg laying between the single and repeated attempts by both Xf and Xs. The probing time of Xf and Xs in the rice stem with concealed host (2.26± 0.10 and 1.60± 0.13 min) and a hollow stem without a host was found to be 1.19± 0.14 and 0.59± 0.15 min, respectively. However, Xs did not parasitize the naked pupa. The number of ovipositor insertions was 1.50± 0.17 in concealed pupae and 0.92± 0.15 in hollow stem without host. Among the stages of S. inferens pupae tested for acceptance by Xf and Xs, the prepupa was preferred the most followed by one- and two-day-old pupa, while five- and six-day-old pupae were not preferred.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"44 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140464629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Diabate, Ehikpa Naomie Melinand N’guessan, Ténon Coulibaly, Yao Tano
Six coleopteran species were collected on cucumber from the Tonkpi Region of Man, Cote d’Ivoire Aulacophora foveicollis, Alticini sp, Paranapiacaba tricincta and Acalymma vittatum observed damaging the plants by making holes on the leaves and flowers. Maximum damage occurred during the dry season (34.66%) and the damage intensity was moderate (12%). In contrast, least damage was during the rainy season (24%) and the damage intensity was lower (6.6%). Predator species recorded were Coccinella septempunctata and Harmonia dimidiata and these were more abundant during the rainy season. Shannon’s index ranged from 2.94 to 3.15 during the dry and rainy seasons, respectively. The occurrence frequencies during the dry and rainy season were varied from 62 to 99% and were classified as constant species.
{"title":"Diversity of Coleoptera on Cucumber in the Tonkpi Region of Man, Côte d’Ivoire","authors":"D. Diabate, Ehikpa Naomie Melinand N’guessan, Ténon Coulibaly, Yao Tano","doi":"10.55446/ije.2024.1692","DOIUrl":"https://doi.org/10.55446/ije.2024.1692","url":null,"abstract":"Six coleopteran species were collected on cucumber from the Tonkpi Region of Man, Cote d’Ivoire Aulacophora foveicollis, Alticini sp, Paranapiacaba tricincta and Acalymma vittatum observed damaging the plants by making holes on the leaves and flowers. Maximum damage occurred during the dry season (34.66%) and the damage intensity was moderate (12%). In contrast, least damage was during the rainy season (24%) and the damage intensity was lower (6.6%). Predator species recorded were Coccinella septempunctata and Harmonia dimidiata and these were more abundant during the rainy season. Shannon’s index ranged from 2.94 to 3.15 during the dry and rainy seasons, respectively. The occurrence frequencies during the dry and rainy season were varied from 62 to 99% and were classified as constant species.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"799 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Patricio R. De los Rios-Escalante, Juan Morales, J. Norambuena
The aquatic insects include mainly larval stages, that hatch into adults, as occurring in some Diptera, which can generate problems in human health in tropical regions as these can transmit diseases. Some of these are reported from inland and coastal saline waters. The present study is an attept to apply the null models to explain the structure of aquatic insects a small saline water source located at south of Antofagasta town (23°47’ S, Chile), using species associations and niches sharing null models. The results reveal a low taxa number, specifically of Diptera (Ephydridae, Ceratopogonidae and Nematocera). The null models of species associations reveal that the associations are random. Evaluation of the niche sharing reveal that species share ecological niches, and as a consequence there are interspecific competition. The reported taxa are similar with communities for inland water saline ecosystems as far as community structure and taxonomic groups are concerned.
{"title":"Aquatic Insects Communities in a Saline Water Source - Antofagasta, Chile","authors":"Patricio R. De los Rios-Escalante, Juan Morales, J. Norambuena","doi":"10.55446/ije.2024.1764","DOIUrl":"https://doi.org/10.55446/ije.2024.1764","url":null,"abstract":"The aquatic insects include mainly larval stages, that hatch into adults, as occurring in some Diptera, which can generate problems in human health in tropical regions as these can transmit diseases. Some of these are reported from inland and coastal saline waters. The present study is an attept to apply the null models to explain the structure of aquatic insects a small saline water source located at south of Antofagasta town (23°47’ S, Chile), using species associations and niches sharing null models. The results reveal a low taxa number, specifically of Diptera (Ephydridae, Ceratopogonidae and Nematocera). The null models of species associations reveal that the associations are random. Evaluation of the niche sharing reveal that species share ecological niches, and as a consequence there are interspecific competition. The reported taxa are similar with communities for inland water saline ecosystems as far as community structure and taxonomic groups are concerned.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"712 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. N. Rudra Gouda, J. S. Pavan, Yogananda M., C. N. Rajarushi
During August 2022, membracids were found on the aerial apical parts of amaltas (Cassia fistula L.) and cutch tree (Acacia catechu Willd). These were identified as Oxyrachis tarandus F. and Leptocentrus taurus F. (Hemiptera: Membracidae). These were observed to feed on the apical portions of stem, making them rough and woody and brown which gradually dried, and the apical leaves were shed off. This is the first report of A. catechu as a new host for L. taurus and C. fistula is an extended host for O. tarandus.
2022 年 8 月期间，在旱金莲（Cassia fistula L.）和苦楝树（Acacia catechu Willd）的气生顶端部分发现了膜翅目昆虫，经鉴定为 Oxyrachis tarandus F 和 Leptocentrus taurus F（半翅目：膜翅目）。经鉴定，它们是 Oxyrachis tarandus F. 和 Leptocentrus taurus F. （半翅目：膜翅目）。据观察，这些害虫取食茎的顶端部分，使其变得粗糙、木质化和褐色，并逐渐干枯，顶端的叶片脱落。这是首次报告 A. catechu 是 L. taurus 的新宿主，而 C. fistula 是 O. tarandus 的扩展宿主。
{"title":"A New Host Record for Leptocentrus taurus and Extended Host Records for Oxycarachis tarandus","authors":"M. N. Rudra Gouda, J. S. Pavan, Yogananda M., C. N. Rajarushi","doi":"10.55446/ije.2024.1952","DOIUrl":"https://doi.org/10.55446/ije.2024.1952","url":null,"abstract":"During August 2022, membracids were found on the aerial apical parts of amaltas (Cassia fistula L.) and cutch tree (Acacia catechu Willd). These were identified as Oxyrachis tarandus F. and Leptocentrus taurus F. (Hemiptera: Membracidae). These were observed to feed on the apical portions of stem, making them rough and woody and brown which gradually dried, and the apical leaves were shed off. This is the first report of A. catechu as a new host for L. taurus and C. fistula is an extended host for O. tarandus.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140462953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Yasmin, M. Shanthi, M. Murugan, S. Vellaikumar, M. L. Mini, R. Nalini
Diamond back moth Plutella xylostella (L.) (Lepidoptera: Plutellidae), is a notorious pest of cruciferous crops causing extensive damage. The present study compares the insecticidal activity of Sesbania grandiflora extracts in hexane, ethyl acetate, and ethanol obtained from two extraction methods: Soxhlet and cold maceration against P. xylostella. Soxhlet extraction by all the solvents showed a distinct effect on larval mortality, adult emergence, and the growth and development of second-instar larvae than cold maceration extraction. Soxhlet ethanolic extract at 5% had significantly better insecticidal activity than cold maceration, with complete larval mortality. The antifeedant index was also higher in ethanol extract, followed by ethyl acetate and hexane extract. However, there was no significant variation in the developmental period. Thus, Soxhlet ethanolic extract of S. grandiflora is concluded to have a promising insecticidal activity on P. xylostella.
{"title":"Impact of Solvents and Extraction Methods on the Insecticidal Activity of Sesbania grandiflora L. Leaf Extracts against Diamondback Moth, Plutella xylostella","authors":"A. Yasmin, M. Shanthi, M. Murugan, S. Vellaikumar, M. L. Mini, R. Nalini","doi":"10.55446/ije.2024.1721","DOIUrl":"https://doi.org/10.55446/ije.2024.1721","url":null,"abstract":"Diamond back moth Plutella xylostella (L.) (Lepidoptera: Plutellidae), is a notorious pest of cruciferous crops causing extensive damage. The present study compares the insecticidal activity of Sesbania grandiflora extracts in hexane, ethyl acetate, and ethanol obtained from two extraction methods: Soxhlet and cold maceration against P. xylostella. Soxhlet extraction by all the solvents showed a distinct effect on larval mortality, adult emergence, and the growth and development of second-instar larvae than cold maceration extraction. Soxhlet ethanolic extract at 5% had significantly better insecticidal activity than cold maceration, with complete larval mortality. The antifeedant index was also higher in ethanol extract, followed by ethyl acetate and hexane extract. However, there was no significant variation in the developmental period. Thus, Soxhlet ethanolic extract of S. grandiflora is concluded to have a promising insecticidal activity on P. xylostella.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"732 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sanghamitra Saharia, Manabendra Nath, Shibani Kalita, Dimpimoni Kalita, S. Bardoloi
The present study is an effort to isolate and identify the Beauveria sp. from white muscardine infected Antheraea assamensis Helfer (muga silkworm) larvae collected from rearing fields. The isolate was subjected to morphological identification followed by DNA barcoding analysis by sequencing the ITS1-5.8S-ITS2 region. The isolate was identified morphologically up to genus level. For molecular identification, the DNA was first isolated, amplified by using PCR followed by sequencing the ITS region. A phylogenetic tree was also constructed based on the data obtained from sequencing to trace the evolutionary history of the isolated fungus. The fungal species was identified as Beauveria bassiana with 98.6% sequence similarity with already documented B. bassiana strains. The toxicity of the isolated fungus was also evaluated against A. assamensis larvae. The LC50 value was determined at 96 hr and recorded at 1.1x108 spore/ ml concentration.
本研究试图从饲养田中采集的受白僵菌感染的 Antheraea assamensis Helfer（木蚕）幼虫中分离并鉴定 Beauveria sp.。先对分离物进行形态鉴定，然后通过 ITS1-5.8S-ITS2 区域测序进行 DNA 条形码分析。分离物的形态鉴定达到了属的水平。为了进行分子鉴定，首先分离出 DNA，利用 PCR 进行扩增，然后对 ITS 区域进行测序。还根据测序获得的数据构建了系统发生树，以追溯分离真菌的进化史。经鉴定，该真菌为 Beauveria bassiana，与已有文献记载的 B. bassiana 菌株序列相似度为 98.6%。还评估了分离出的真菌对 A. assamensis 幼虫的毒性。在 1.1x108 个孢子/毫升的浓度下，96 小时后测定了 LC50 值。
{"title":"Identification and Toxicity Evaluation of Beauveria sp. Associated with White Muscardine Disease in Muga Silkworm Antheraea assamensis Helfer","authors":"Sanghamitra Saharia, Manabendra Nath, Shibani Kalita, Dimpimoni Kalita, S. Bardoloi","doi":"10.55446/ije.2024.1698","DOIUrl":"https://doi.org/10.55446/ije.2024.1698","url":null,"abstract":"The present study is an effort to isolate and identify the Beauveria sp. from white muscardine infected Antheraea assamensis Helfer (muga silkworm) larvae collected from rearing fields. The isolate was subjected to morphological identification followed by DNA barcoding analysis by sequencing the ITS1-5.8S-ITS2 region. The isolate was identified morphologically up to genus level. For molecular identification, the DNA was first isolated, amplified by using PCR followed by sequencing the ITS region. A phylogenetic tree was also constructed based on the data obtained from sequencing to trace the evolutionary history of the isolated fungus. The fungal species was identified as Beauveria bassiana with 98.6% sequence similarity with already documented B. bassiana strains. The toxicity of the isolated fungus was also evaluated against A. assamensis larvae. The LC50 value was determined at 96 hr and recorded at 1.1x108 spore/ ml concentration.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"186 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140468935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. S. Pavan, R. D. Dodiya, M. N. Rudra Gouda, B. L. Raghunandan, Nainesh B. Patel, C. N. Rajarushi
This study explores the potential of nucleopolyhedroviruses (NPVs) as a sustainable solution for managing legume pod borer Maruca vitrata (F). Distinctive signs of viral infection, such as suspended deceased larvae on cowpea leaves, and virus spread have been observed. Microscopic examination reveals characteristic polyhedral inclusion bodies (PIBs), confirming MaviNPV as the causative agent. Symptoms, including decreased activity and mortality in younger larvae, larval-pupal intermediates and deformed pupae have been observed. Reproductive disruption is evident through the absence of an egg mass and discharge of fluid from emerged adults. Bioassay results highlight age-dependent susceptibility, with higher mortality in early instars.
{"title":"Report of Maruca vitrata (F) Nucleopolyhedrovirus","authors":"J. S. Pavan, R. D. Dodiya, M. N. Rudra Gouda, B. L. Raghunandan, Nainesh B. Patel, C. N. Rajarushi","doi":"10.55446/ije.2024.1873","DOIUrl":"https://doi.org/10.55446/ije.2024.1873","url":null,"abstract":"This study explores the potential of nucleopolyhedroviruses (NPVs) as a sustainable solution for managing legume pod borer Maruca vitrata (F). Distinctive signs of viral infection, such as suspended deceased larvae on cowpea leaves, and virus spread have been observed. Microscopic examination reveals characteristic polyhedral inclusion bodies (PIBs), confirming MaviNPV as the causative agent. Symptoms, including decreased activity and mortality in younger larvae, larval-pupal intermediates and deformed pupae have been observed. Reproductive disruption is evident through the absence of an egg mass and discharge of fluid from emerged adults. Bioassay results highlight age-dependent susceptibility, with higher mortality in early instars.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"42 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Keerthana, M. Chalam, P. Radhika, P. Lavanya Kumari
Twenty three castor genotypes screened against two important pests viz., Spodoptera litura (F) and Achaea janata (L). The results revealed that none of the genotypes were resistant. Based on the defoliation scale nine genotypes viz., GC-3 (9.86% defoliation), ICS-164 (10.13%), DCH-519 (10.48%), YTP-1 (10.92%), DCS-107 (11.78%), DCS-8g (12.70%), DCS-9 (12.72%), 48-1 (13.63%) and GC-2 (14.33%) were categorised as tolerant to S. litura and A. janata. Three genotypes viz., Haritha (21.58%), SKI-215 (23.81%) and SKI-291 (24.07%) were categorised as moderately tolerant. In these genotypes, the minimum larval incidence range was 0.31 to 0.51 larvae plant-1 in case of S. litura, whereas the minimum larval incidence range was 0.49 to 0.64 larvae plant-1 in case of A. janata.
{"title":"Screening of Castor Germplasm against Tobacco Caterpillar Spodoptera litura F and Castor Semilooper Achaea janata L","authors":"B. Keerthana, M. Chalam, P. Radhika, P. Lavanya Kumari","doi":"10.55446/ije.2024.1858","DOIUrl":"https://doi.org/10.55446/ije.2024.1858","url":null,"abstract":"Twenty three castor genotypes screened against two important pests viz., Spodoptera litura (F) and Achaea janata (L). The results revealed that none of the genotypes were resistant. Based on the defoliation scale nine genotypes viz., GC-3 (9.86% defoliation), ICS-164 (10.13%), DCH-519 (10.48%), YTP-1 (10.92%), DCS-107 (11.78%), DCS-8g (12.70%), DCS-9 (12.72%), 48-1 (13.63%) and GC-2 (14.33%) were categorised as tolerant to S. litura and A. janata. Three genotypes viz., Haritha (21.58%), SKI-215 (23.81%) and SKI-291 (24.07%) were categorised as moderately tolerant. In these genotypes, the minimum larval incidence range was 0.31 to 0.51 larvae plant-1 in case of S. litura, whereas the minimum larval incidence range was 0.49 to 0.64 larvae plant-1 in case of A. janata.","PeriodicalId":13463,"journal":{"name":"Indian journal of entomology","volume":"1034 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140467539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：