Neotropical Entomology (2001) 30, 467-470

Adriana M.V. Fernandes, Ângela M.I. Farias, Mônica M.M. Soares and Simão D. Vasconcelos (2001)
Desenvolvimento do Pulgão Aphis gossypii Glover (Hemiptera: Aphididae) em Três Cultivares do Algodão Herbáceo Gossypium hirsutum L. r. latifolium Hutch.
[Development of Aphis gossypii Glover (Hemiptera: Aphididae)in three cultivars of herbaceous cotton (Gossypium hirsutum L. r. latifolium Hutch.]
Neotropical Entomology 30 (3), 467-470
Abstract: We studied the development of Aphis gossypii Glover (Hemiptera: Aphididae) in three cultivars of the herbaceous cotton plant: CNPA Precoce 1, CNPA Precoce 2 and CNPA 7 H. Cotton plants 20-cm high, maintained individually in caged pots, were infested with 20 adult aphids. We recorded the number of aphids in each plant of the three cultivars 15, 30 and 45 days after the infestation. Significant differences were found in the mean number of aphid between the cultivar CNPA Precoce 2 and the other cultivars. No significant difference was registered between the cultivars concerning to the vertical distribution of aphids on the plant, except at 45 days after infestation, when the cultivar CNPA Precoce 2 presented higher density of aphids in the medium region in the comparison with the basal region.

Estudou-se o desenvolvimento do pulgão Aphis gossypii Glover (Hemiptera: Aphididae) em três cultivares do algodão hérbaceo, CNPA Precoce 1, CNPA Precoce 2 e CNPA 7 H. Plantas de algodão com cerca de 20 cm mantidas em vasos individuais telados foram infestadas com 20 pulgões adultos. Após 15, 30 e 45 dias, procedeu-se à contagem dos pulgões em cada planta das três cultivares. Observou-se diferença significativa do número médio total de pulgões entre a cultivar CNPA Precoce 2 e as outras cultivares testadas. Não foi registrada diferença na distribuição vertical dos pulgões na planta, exceto aos 45 dias, quando a cultivar CNPA Precoce 2 apresentou maior densidade de insetos na região mediana em relação à basal.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Full text of article

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aphis gossypii	Cotton (Gossypium)