Abstract
Cauliflower is popular vegetable in Pakistan and it is severely attacked by Pieris brassicae (L). There are different cauliflower cultivars available in this area. The aim of this study was to determine the developmental response of Pieris brassicae on ten cauliflower cultivars. An experiment was conducted during 2012-13 at the Entomology section of the Agriculture Research Institute Tarnab Peshawar under laboratory conditions of 20°C ± 2°C, 50% ± 5% RH and 12:12h photoperiod. Pieris brassicae eggs were collected from a cauliflower field ARI Tarnab and the larvae placed after hatching on fresh leaves often cauliflower cultivars. The results showed that the larval development of P. brassicae was short (35 days), longer larval length (32.41 mm), larval mortality was low (6.6%) and pupal weight was high (0.50 g) on Clima cultivar. On the other hand, a longer larval developmental period (37 days), higher larval mortality (86.66%), shorter larval length (24.55 mm) and lower pupal weight (0.42 g) were recorded on cultivar AX-2034.
Highlights
Cauliflower (Brassica oleracea), one of the vegetables in the family Brassicaceae, produces flowers once a year and relies on seeds for new plant generation
The results showed no significant difference (P-value = 0.05) in the larval developmental period of P. brassicae fed on various cauliflower varieties (Figure 1)
P. brassicae completes its generation in 40 days on cabbage, cauliflower and broccoli [5]
Summary
Cauliflower (Brassica oleracea), one of the vegetables in the family Brassicaceae, produces flowers once a year and relies on seeds for new plant generation. (2014) Developmental Response of Pieris brassicae (L.) (Lepidoptera: Pieridae) on Different Cauliflower Cultivars under Laboratory Conditions. A. Khan the Peshawar valley the cauliflower crop is attacked by a number of insect pests at different stages of development, which results in considerable reduction in yield. Insect pests of cauliflower include the Cabbage butterfly, cutworms and aphids. The Cabbage butterfly (Pieris brassicae L.) is a serious pest of other cruciferous vegetables like cabbage and radish [2]. It infests 91 species of plants from 12 families in the wild [3]
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