Gupta Shallina, Chaudhary Ashun, Singh Sumit, Arora Saroj, Sohal Satwinder Kaur
Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
Heliyon. 2021 Jul 17;7(7):e07612. doi: 10.1016/j.heliyon.2021.e07612. eCollection 2021 Jul.
Effect of the ethyl acetate seed extracts of two cultivars of broccoli, Italica, (PS) and (PV) on growth, development and nutritional physiology of an economically important insect pest, (Fabricius) (Lepidoptera: Noctuidae) was evaluated by conducting bioassays and nutritional assays. The insect larvae were fed on diets amended with the seed extracts of two cultivars at different concentrations viz. 5, 25, 125, 625 and 3125 ppm and taking water as control. The response of the insect varied with plant varieties. The extracts disrupted the developmental cycle of the pest. Larval mortality and total adult emergence were negatively affected. Larval period and total development period were also negatively influenced. Nutritional indices of also showed considerable decrease in the RGR, RCR, ECI and ECD as compared to control. The AD values were also enhanced with both the cultivars. The findings of the study revealed a considerable anti-insect potential of the two extracts and needs to be further explored for identification and isolation of bioactive constituents from broccoli for efficient management of the pest population.
通过进行生物测定和营养测定，评估了两种西兰花品种意大利芥蓝（PS）和（PV）的乙酸乙酯种子提取物对一种经济上重要的害虫（夜蛾科：夜蛾属）（Fabricius）生长、发育和营养生理的影响。用不同浓度（即5、25、125、625和3125 ppm）的两个品种的种子提取物改良饲料喂养昆虫幼虫，并以水作为对照。昆虫的反应因植物品种而异。提取物扰乱了害虫的发育周期。幼虫死亡率和成虫总羽化率受到负面影响。幼虫期和总发育期也受到负面影响。与对照相比，该害虫的营养指标在相对生长率（RGR）、相对消耗率（RCR）、食物转化率（ECI）和食物利用率（ECD）方面也显著下降。两个品种的近似消化率（AD）值也有所提高。该研究结果揭示了这两种提取物具有相当大的抗虫潜力，需要进一步探索从西兰花中鉴定和分离生物活性成分，以有效控制害虫种群。
