The relative importance of nervous and humoral pathways for control of corpus allatum activity in the adult colorado potato beetle, Leptinotarsa decemlineata (Say)

1983 ◽  
Vol 52 (2) ◽  
pp. 214-221 ◽  
Author(s):  
M.A. Khan ◽  
A.B. Koopmanschap ◽  
C.A.D. de Kort
Keyword(s):  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Corpus Allatum ◽  
Relative Importance ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say ◽  
Corpus Allatum Activity

THE EFFECT OF WATER STRESS AND LEAFLET SIZE ON THE DENSITY OF TRICHOMES AND THE RESISTANCE TO COLORADO POTATO BEETLE LARVAE (LEPTINOTARSA DECEMLINEATA [SAY]) IN SOLANUM BERTHAULTII HAWKES

1990 ◽  
Vol 122 (6) ◽  
pp. 1141-1147 ◽  
Author(s):  
Yvan Pelletier
Keyword(s):  
Water Stress ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Solanum Berthaultii ◽  
Abaxial Surface ◽  
First Instar ◽  
Potato Beetle ◽  
Resistance To Insects ◽  
Leptinotarsa Decemlineata Say ◽  
Growing Conditions

AbstractSolanum berthaultii Hawkes bears trichomes reportedly providing resistance to insects. Results indicated that the density of types A and B trichomes was linearly related to the inverse of the leaflet area. The number of trichomes on the adaxial and on the abaxial surface of terminal leaflets was not affected by two levels of water stress or by growing conditions in the greenhouse or the field. The leaflets of the water-stressed plants were generally smaller and, consequently, the density of trichomes higher.The survival of first-instar Colorado potato beetle larvae was similar on S. berthaultii grown under varying drought conditions and on leaves from field-grown plants bearing different densities of trichomes.

Sign in / Sign up

Export Citation Format

Share Document