Abstract

Food consumption and utilization parameters of Plutella xylostella (L.) were studied on the leaves of eight cabbage cultivars under laboratory conditions (27 ± 2 °C, 70 ± 5 % RH, 16 L: 8D photoperiod). The present study evaluated the effect of different biochemical factors of cabbage cultivars on the food consumption and utilization parameters of P. xylostella. All the food consumption and utilization parameters differed significantly among the cabbage cultivars. The highest values of relative consumption rate (RCR) and relative growth rate (RGR) were observed on the cabbage cultivars ‘NS 183’, ‘DEB 806’, ‘Green Express’ and ‘Mohor’. The highest values of the efficiency of conversion of ingested (3.94 %) and digested (4.95 %) food was observed on the cabbage cultivar ‘DEB 806’. In contrast, the 4th instar P. xylostella larvae fed on the cabbage cultivar ‘Lucky Ball’ exhibited the lowest values of RCR (1.31 mg food consumed/mg body weight/ day), RGR (0.33 mg weight gain/mg body weight/ day), ECI (2.47 %) and ECD (2.95 %). The food consumption and utilization parameters of P. xylostella were positively correlated with the protein: carbohydrate (P:C) ratio of cabbage cultivars. The food consumption and utilization parameters of P. xylostella showed a non-significant correlation with the total glucosinolate content and total phenolic content of cabbage cultivars. The present study will help to identify effective resistant or tolerant cabbage cultivars for the development of Integrated Pest Management strategies against P. xylostella.

Graphical abstract

中文翻译：

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卷心菜品种对小菜蛾小菜蛾食物消耗和利用参数的影响

摘要

在实验室条件下（27±2°C，70±5％RH，16 L：8D光周期），对八个小白菜品种的叶片上的小菜蛾（Plutella xylostella（L.））的食物消耗和利用参数进行了研究。本研究评估了甘蓝品种不同生化因素对小菜蛾食物消耗和利用参数的影响。。卷心菜品种的所有食物消耗和利用参数均存在显着差异。在白菜品种“ NS 183”，“ DEB 806”，“ Green Express”和“ Mohor”上观察到相对消耗率（RCR）和相对生长率（RGR）最高。在甘蓝品种“ DEB 806”上观察到摄入食物（3.94％）和消化食物（4.95％）的转化效率最高。相比之下，饲喂甘蓝品种“幸运球”的四龄小菜蛾幼虫表现出最低的RCR值（1.31 mg食用食物/ mg体重/天），RGR（0.33 mg增重/ mg体重/天） ），ECI（2.47％）和ECD（2.95％）。小菜蛾的食物消耗和利用参数与白菜品种的蛋白质：碳水化合物（P：C）比呈正相关。小菜蛾的食物消耗和利用参数与甘蓝品种的总硫代芥子油苷含量和总酚含量无显着相关性。本研究将有助于确定有效的抗性或耐受性白菜品种，以制定对抗小菜蛾的病虫害综合防治策略。

图形概要