Plant Resistance to Five Lepidoptera Attacking Cotton1

Lukefahr, M. J.; Martin, D. F.; Meyer, John R.

doi:10.1093/jee/58.3.516

Cited by 43 publications

(19 citation statements)

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“…Though nectaries constitute only a small part in terms of biomass, they ooze out considerable amount of nectar which is rich in carbohydrates. Absence of nectaries provides resistance by depriving the insect pest of their food source (LUKEFAHR et al, 1965). Nectar and nectaries represent a drain on plant resources and the absence ofnectaries is a saving.…”

Section: Discussionmentioning

confidence: 99%

Bioenergetic considerations in breeding for insect and pathogen resistance in plants

Mitra

Bhatia

1982

Euphytica

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The bioenergetic cost (glucose requirement to provide carbon skeletons and energy production) for the synthesis of 35 chemicals implicated as phytoalexins in combating fungal and bacterial infections as well as the alMochemicals responsible for non-preference or antibiosis in insect-plant interactions were calculated. Heat of combustion values which represent the intrinsic energy content of the molecule for these chemi-. cals, were also computed. The results indicate that the energetic cost of the chemicals responsible for genetic resistance is not exceptionally higher. In fact, they are comparable to those of many fatty acids found in plants. Though the concentration of the chemicals responsible for resistance is low in plant tissues, the total amount per hectare is quite high and consequently the plant resources that go to produce these are high.

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Section: Discussionmentioning

confidence: 99%

Bioenergetic considerations in breeding for insect and pathogen resistance in plants

Mitra

Bhatia

1982

Euphytica

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“…Nesse sentido, em relação ao curuquerê, a ausência de glândulas de nectários, proporciona uma redução significativa na sua população da praga (Lukefahr & Rhyne, 1960;Lukefahr et al, 1965). Em variedades glabras, também ocorre fato semelhante (Lukefahr et al, 1966).…”

Section: Introductionunclassified

Resistência de variedades de algodão ao curuquerê do algodoeiro Alabama argillacea Hubner (lepidoptera: noctuidae)

et al. 2012

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Este trabalho teve como objetivo verificar a ocorrência das formas de resistência, tais como: a não preferência para oviposição, a não preferência para alimentação e a antibiose, em variedades de algodoeiro (Gossypium hirsutum L.), à Alabama argillacea (Hubner, 1818), em experimentos de laboratório (27 ± 2 ºC, 70 ± 10% de U.R. e fotofase de 14 horas). Para avaliar a não preferência para oviposição e para a alimentação em teste com chance de escolha, adotou-se o delineamento em blocos casualizados e, no teste sem chance, o inteiramente casualizado. Para avaliar a antibiose, foram fornecidas às larvas, diariamente, folhas das variedades DeltaOpal, NuOpal, FMT 701, FMX 910 e 20 FMX 996. Durante este processo, verificou-se a duração de cada fase do inseto, avaliando-se a massa de larvas aos dez dias de idade, massa de pupas com 24 horas, período larval, pré-pupal e pupal, longevidade de adultos, viabilidade total e fecundidade. As variedades NuOpal e FMT 701 apresentam resistência do tipo não preferência para alimentação. As variedades NuOpal, FMT 701 e FMX 910 apresentam resistência do tipo antibiose em relação a A. argillacea.

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“…Nectariless (lack of nectaries) and pubescent cotton varieties significantly reduced pink bollworm populations, resulting in lower infestation and increased yield (Lukefahr et al 1965;Wilson and Wilson 1976;Flint et al 1988). Pubescent cottons were found to impede movement of larvae, causing exhaustion and disorientation, and additionally extending exposure of neonates to detrimental biotic (predators and parasites), and abiotic (high temperatures) conditions in the field (Smith et al 1975).…”

Section: Introductionmentioning

confidence: 99%

Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

Chatzigeorgiou

Papadopoulos

Prophetou‐Athanasiadou

2010

J Pest Sci

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The effect of four cotton cultivars on the oviposition behavior of the pink bollworm Pectinophora gossypiella (Saunders) was studied under laboratory and semi-field conditions. Young plants and bolls from four commercial upland cotton cultivars (Lachata, Macnair-220, Midas and Sandra) cultivated in the area of Thessaloniki were used. The four cultivars had palmate leaves, and nectaries on both leaves and bolls. Differences were observed in the trichome density and the length of leaf petiole among the cultivars. The typical shape of bolls was either round or ovate. Differences were observed among the cultivars tested in boll size and bract's length. In a series of experiments we recorded the number of eggs oviposited in no-, two-, three-, and four-choice tests using either young plants or bolls. Although the four cotton cultivars exhibited a variation in morphological characteristics, the mean number of eggs oviposited on young plants and bolls did not differ among them in two-, three-, and four-choice experiments. Substantially higher number of eggs were oviposited on either young plants or bolls of Midas in no-choice experiments. Eggs were oviposited mainly on newly developed unfolded leaves of the young plants and under the calyx of the bolls. In a semi-field experiment, we found a clear oviposition preference for bolls compared with plant terminals in all the cultivars tested. Females oviposited similar number of eggs in the four cultivars. We discuss the effect of morphological characteristics of cotton cultivars on the oviposition behavior of pink bollworm.

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Plant Resistance to Five Lepidoptera Attacking Cotton1

Cited by 43 publications

References 0 publications

Bioenergetic considerations in breeding for insect and pathogen resistance in plants

Bioenergetic considerations in breeding for insect and pathogen resistance in plants

Resistência de variedades de algodão ao curuquerê do algodoeiro Alabama argillacea Hubner (lepidoptera: noctuidae)

Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

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