THE ENERGETICS AND GROWTH EFFICIENCY OF APHIS FABAE SCOP. REARED ON DIFFERENT PARTS OF THE BROAD BEAN PLANT (VICIA FABA)

The Black bean aphid Aphis fabae Scopoli (Homoptera: Aphididae) is a serious pest of faba bean, Vicia faba L. (Fabaceae) in Algeria. The use of resistant cultivars may reduce the impact of this pest on broad bean production and at the same time reduce environmental risks and control costs. The level of resistance of fourteen cultivars of broad bean, Vicia faba was screened in the field against the main aphid pest of faba bean, the Black bean aphid, Aphis fabae Scopoli during January to April 2011 in Biskra region (in the east of Algeria). Among the cultivars tested, six cultivars (1, 9, 12, 13, 14 and 15) were the most resistant in the three counts, while three cultivars (4, 6 and 11) were showed a high susceptibility against this aphid at least once. The remainder of cultivars (3, 5, 7, 8 and 10) revealed an unsettled level of resistance. The relationship between the level of resistance and morphological characters of cultivars indicated that the resistant cultivars have a longer leaflet than the high susceptible cultivars. In the other hand, the statistical analysis showed that no significant differences on the plant height and the leaflet width in the tow category of cultivars (resistant and high susceptible).

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Identification of medicarpin as a phytoalexin in the broad bean plant (Vicia faba L.)

Nature ◽

10.1038/262318a0 ◽

1976 ◽

Vol 262 (5566) ◽

pp. 318-319 ◽

Cited By ~ 30

Author(s):

J. A. HARGREAVES ◽

J. W. MANSFIELD ◽

D. T. COXON

Keyword(s):

Vicia Faba ◽

Broad Bean ◽

Bean Plant ◽

Vicia Faba L

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Cold hardiness of laboratory-maintained and seasonally-collected populations of the black bean aphid, Aphis fabae Scopoli (Hemiptera: Aphididae)

Bulletin of Entomological Research ◽

10.1017/s0007485300014851 ◽

1986 ◽

Vol 76 (3) ◽

pp. 367-374 ◽

Cited By ~ 12

Author(s):

Rose O'Doherty

Keyword(s):

Host Plant ◽

Vicia Faba ◽

Cold Hardiness ◽

Broad Bean ◽

Aphis Fabae ◽

Black Bean ◽

Euonymus Europaeus ◽

Plant Transfer ◽

Cold Hardy ◽

Woody Host

AbstractThe cold hardiness of Aphis fabae Scopoli was assessed by determining the ability of individual aphids to supercool. All stages of A. fabae maintained parthenogenetically at 20°C on broad bean (Vicia faba) were capable of extensive supercooling ability to below −20°C; first- and secondinstar nymphs were the most cold hardy individuals. First instars and adult apterae of A. fabae collected from natural summer populations on broad bean and sugarbeet in England showed levels of supercooling similar to that of laboratory-maintained aphids. Compared to aphids on herbaceous hosts, all those associated with the woody host, spindle (Euonymus europaeus), showed a substantially poorer ability to supercool, often to less than −15°C, both in the autumn (oviparae) and spring (fundatrices and fundatrigeniae). All samples of eggs supercooled to below −30°C, becoming fully acclimatized in mid-winter, and lost supercooling potential prior to hatching in spring. The influence of feeding on woody and herbaceous plants on the cold hardiness of A. fabae was confirmed in a series of host-plant transfer experiments in which aphids that were transferred to bean from spindle acquired good levels of supercooling and then lost over 10°C of supercooling potential when transferred back to spindle. The shift from poor (spindle-associated) to good (bean-associated) supercooling was more difficult to achieve and suggested the presence of a nucleator in the spindle sap.

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