Consequence of &lt;i&gt;Spodoptera litura&lt;/i&gt; Fabricius (Lepidoptera: Noctuidae) Morphometrics Reared on Different Cotton Varieties

Tithi, D.A.; Amin, Md. Ruhul; Hossain, Shakhawat; Azad, H.M.S.

doi:10.3126/on.v8i1.4318

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…The aphid species Aphis gossypii Glover (Hemiptera: Aphididae) and jassid species Amrasca devastans (Hemiptera: Cicadellidae) concurrently attack cotton plants in Bangladesh and have been reported to be the most destructive cotton pests, causing damage throughout the season (Tithi et al, 2010). They are commonly found on the lower leaf surfaces of the terminal bud and other parts of plants, and both the species cause similar damage symptoms by feeding on leaves and developing bolls (Deguine et al, 2000;Sharma and Singh, 2011).…”

Section: Introductionmentioning

confidence: 99%

Infestation of sucking insect pests on five cotton cultivars and their impacts on varietal agronomic traits, biochemical contents, yield and quality

et al. 2016

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The five cotton cultivars viz., CB1, CB3, CB5, CB8, and C12 were evaluated under field conditions to compare their resistance levels against the aphid species Aphis gossypii (Hemiptera: Aphididae) and the jassid species Amrasca devastans (Hemiptera: Cicadellidae). The effects of plant characteristics that could explain some of the varietal resistance levels were tested by measuring infestation levels, biochemical content, leaf trichome density, agronomic traits, yield, and quality of seed and fiber. In comparison with other varieties, CB1 and CB3 showed the least leaf and boll infestation, and possessed higher numbers of trichomes. CB12 had the lowest number of trichomes and exhibited the highest percentages of leaf and boll infestation. Biochemical analyses indicated that the highest percentage of starch occurred in CB8, and that of protein in CB5. Both starch and protein content were lowest in CB12. Aphid and jassid infestation reduced the starch and protein content of all cultivars. CB3 was the best performing variety in terms of size and weight of bolls; ginning out-turn (GOT); number of branches, leaves, and bolls per plant; and number of locules per boll. Seed cotton yields and lint indices were highest in CB1 and CB3 and lowest in CB12. CB12 was also the worst performing variety in terms of plant height, micronaire value, percentage of GOT and germination, number of leaves and bolls per plant, and boll length, width and weight. The findings of this study clearly demonstrate that, among the cultivars evaluated, CB12 is the most susceptible to aphid and jassid infestation.SAARC J. Agri., 14(1): 11-23 (2016)

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Section: Introductionmentioning

confidence: 99%

Infestation of sucking insect pests on five cotton cultivars and their impacts on varietal agronomic traits, biochemical contents, yield and quality

et al. 2016

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“…Of them aphid, Aphis gossypii Glover (Hemiptera: Aphididae) and jassid, Amrasca devastans Distant (Hemiptera: Cicadellidae) are the most destructive, and cause damage throughout the season (Amin et al, 2008;Amin et al, 2009;Tithi et al, 2010;Azad et al, 2011). Management of these sucking insects in Bangladesh is mostly relied on synthetic insecticides, which pollute the environment and threats to the abundance and diversity of predator and pollinator species Hossain et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of leaf trichomes and meteorological parameters on population dynamics of aphid and jassid in cotton

Amin

Afrin

Alam

et al. 2017

Bangladesh J. Agric. Res

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This study was conducted with CB1, CB3, CB5, CB8 and C12 cotton varieties to determine the role of leaf trichomes and meteorological factors on the abundances of aphid and jassid. The mean population of the pests on the tested varieties differed significantly and showed negative correlation with trichomes. The pests were most abundant on CB12, and each variety revealed significantly higher population of jassid than that of aphid. Both the pests built up their population in the juvenile stage of the plants (73 days after sowing) and continued until harvesting. Aphid population was the highest on CB12 in the first week of November, whereas maximum abundance of jassid was on CB12 in the third week of December. Weather parameters were found insignificant on aphid abundance, but jassid population on the varieties was correlated with maximum and minimum temperatures, relative humidity and rainfall. Multiple regression equation based on weather parameters exerted 8.8 -43.2% and 54.4 -77.7% role on population build up of aphid and jassid, respectively. Maximum temperature had the most important effect which contributed 61.2% population fluctuation of jassid on CB12.

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“…Measurement of width of head capsule provides an information of morphometrics as in Lepidoptera, the head capsule width helps to determine the larval instars (Ashwini et al, 2016). Head capsule width of larval instars was used to determine the age of S. litura (Tithi et al, 2010). The number of larval instars and biology of S. litura helps in the development of crop pest models and pest management operations (Xue et al, 2010;Tuan et al, 2015;Etman and Hooper 1980).…”

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confidence: 99%

Biology and Morphometrics of Spodoptera litura (F.) on Castor

Ashok

Pavithran²

2022

ije

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Biology and morphometrics of Spodoptera litura (F.) was studied by rearing it on castor under laboratory conditions. Morphology of life stages i.e., egg, larva, pupa and adult along with development period were observed. The width of head capsule was observed at each moult as 0.19, 0.25, 0.45, 0.71, 1.31 and 2.13 mm, respectively. The mean growth ratio of S. litura was observed as 1.64, which indicated that increase in head width in instars was only slightly varying from Dyar’s law.

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Consequence of <i>Spodoptera litura</i> Fabricius (Lepidoptera: Noctuidae) Morphometrics Reared on Different Cotton Varieties

Cited by 5 publications

References 8 publications

Infestation of sucking insect pests on five cotton cultivars and their impacts on varietal agronomic traits, biochemical contents, yield and quality

Infestation of sucking insect pests on five cotton cultivars and their impacts on varietal agronomic traits, biochemical contents, yield and quality

Effect of leaf trichomes and meteorological parameters on population dynamics of aphid and jassid in cotton

Biology and Morphometrics of Spodoptera litura (F.) on Castor

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