Histological and histochemical studies of the apical cells of the cotton bollworm, Heliothis armigera (Huebner) (Lepidoptera : Noctuidae)

1992 ◽  
Vol 21 (3) ◽  
pp. 263-270 ◽  
Author(s):  
S.B. Sonoli ◽  
M.A. Hooli
Keyword(s):  
Heliothis Armigera ◽  
Cotton Bollworm ◽  
Apical Cells ◽  
Lepidoptera Noctuidae

Investigations on the Cotton Bollworm, Heliothis armigera, Hübn

1940 ◽  
Vol 31 (2) ◽  
pp. 147-177 ◽  
Author(s):  
F. S. Parsons
Keyword(s):  
Heliothis Armigera ◽  
Egg Laying ◽  
Food Plant ◽  
Cotton Bollworm ◽  
Flowering Period ◽  
Flower Production ◽  
Plant Associations ◽  
The Given

Studies of the food-plant associations of Heliothis armigera have elicited the information that, for all practical purposes, egg-laying may be considered as confined to the period of florescence. Evidence of coincidence of the oviposition and flowering curves is submitted for 21 species of short-flowering crops and 8 species of long-flowering crops. All told, records taken in nearly 1,000 crops have been consulted for the conclusions drawn.As regards short-flowering species, the peaks, as well as the confines, of the oviposition and flowering curves are related closely. But oviposition on long-flowering species may decline while flowering is still in progress, or two or more waves of oviposition may be evident according to the number of moth flights spanned by the flowering period. The courses of oviposition on long-flowering species of crop in the given instances are interpreted through knowledge of the train of moth flights: although egg-laying in quantity occurs within the flowering period, peak layings frequently are not aligned with maximum flower production because the calendar times of moth flights are displaced in relation thereto.

Sign in / Sign up

Export Citation Format

Share Document