Results 161 to 170 of about 1,468 (191)

Antixenosis Component of Resistance to Aphids in the Cowpea

East African Agricultural and Forestry Journal, 1996
(1996). Antixenosis Component of Resistance to Aphids in the Cowpea. East African Agricultural and Forestry Journal: Vol. 61, No. 3, pp. 249-253.
S.M. Githiri, K. Ampong-Nyarko, E.O. Osir, P.M. Rimani   +3 more
openaire   +1 more source

Screening of soybean genotypes for antixenosis against Spodoptera litura

Journal of Oilseeds Research, 2020
Among 95 soybean genotypes screened against Spodoptera litura, 2 genotypes viz., Hara Soya and G5P22exhibited strong antixenosis, 11 genotypes exhibited moderate antixenosis. Whereas, 40 genotypes and 42 genotypes expressed slight antixenosis and preference host respectively.
null VANGALA RAJESH, null LOKESH KUMAR MEENA, null SANJAY GUPTA, null M SHIVAKUMAR, null V NATARAJ, null VIRAJ G KAMBLE, null R RAMTEKE, null SUBHASH CHANDRA, null R N SINGH, null A N SHARMA   +9 more
openaire   +1 more source

Antixenosis mechanism of resistance in pigeonpea to the pod borer, Helicoverpa armigera [PDF]

Journal of Applied Entomology, 2006
The noctuid pod borer, Helicoverpa armigera, is one of the most important pests of pigeonpea, and plant resistance is an important component for minimizing the extent of losses caused by this pest.
H C Sharma
exaly   +2 more sources

Mechanisms of resistance in cotton to whitefly (Bemisia tabaci): antixenosis

Phytoparasitica, 2011
Screenhouse experiments were conducted under free-choice conditions to determine the mechanism of resistance operating in cotton against whitefly, Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae). Twelve cotton genotypes belonging to Gossypium hirsutum and G. arboreum were assessed for oviposition preference by whitefly.
Vikas Jindal, G. S. Dhaliwal
openaire   +1 more source

Antixenosis and Antibiosis of Common Beans to Thrips palmi Karny (Thysanoptera: Thripidae)

Journal of Economic Entomology, 2003
Antixenosis and antibiosis in the resistance of common beans (Phaseolus vulgaris L.) to the melon thrips, Thrips palmi Karny, were investigated under laboratory and field conditions. Experiments were conducted for four moderately resistant genotypes ('Brunca', BH-130, EMP 486, and FEB 115) in comparison with one susceptible genotype (APN 18).
Frei A, Gu H, Bueno JM, Cardona C, Dorn S   +4 more
openaire   +3 more sources

Techniques for Determining Mechanisms of Resistance: Antixenosis for Feeding

2019
Entomologists have designed several experimental setup to measure feeding responses of insects to host–plants. One method each for chewing and sucking pests has been described in this chapter. The experimental techniques should be easy to execute, repeatable, and precise.
L. Vijay Kumar, P. N. Guru, B. S. Rajendra Prasad   +2 more
openaire   +1 more source

Ovipositional Antixenosis in Some Barley Accessions to Barley Shoot Fly

2023
Pest Managment Journal of Ethiopia , Vol.
Tafa Jobie, Tadesse Gebremedhin, P.K. Sakhuja   +2 more
openaire   +1 more source

Techniques for Determining Mechanisms of Resistance: Antixenosis for Oviposition

2019
In the host selection process, oviposition by adult female is a crucial step. It establishes the fact that the insect can utilize the plant for reproduction. The ovipositional preference of an adult can be tested under choice/no-choice conditions. Nonparametric and parametric statistical tools can be deployed to deduce inferences from the experiments.
K. R. Manikandan, A. Arasu
openaire   +1 more source

Antixenosis resistance to leaf miner Leucoptera coffeella in Coffea species

Euphytica, 2011
The coffee leaf miner, Leucoptera coffeella, is the most important pest of Coffea arabica plantations in Brazil, and all cultivars are susceptible to the insect. However, distinct reactions have been observed in other species, such as C. congensis and C. canephora.
José Wilacildo de Matos, Oliveiro Guerreiro-Filho, Wallace Gonçalves, Daniel Alves Ramiro, Bárbhara Joana dos Reis Fatobene   +4 more
openaire   +1 more source

Antixenosis resistance in tomato to the fruit borer Helicoverpa armigera (Hübner)

International Journal of Tropical Insect Science, 2004
Antixenosis resistance to Helicoverpa armigera (Lepidoptera: Noctuidae) was studied in 10 tomato accessions selected from a germplasm of 321 at Tamil Nadu, India, using free-choice and no-choice laboratory experiments. The foliage and fruits of two accessions, namely PT 4287 and Varushanadu Local were the least preferred for feeding in both tests.
V. Selvanarayanan, P. Narayanasamy
openaire   +1 more source