Impact of foliar application of silicic acid on aphid population growth, gas exchange parameters and yield of rapeseed

IF 1.5 3区农林科学 Q2 AGRONOMY Phytoparasitica Pub Date : 2024-07-26 DOI:10.1007/s12600-024-01183-1

Karthik R, Mukul Kumar Deka, Ajith S, Prakash Kalita, Prakash N B

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Abstract

Silicon (Si) enhances plant resistance against herbivores and improves crop yield. This study investigated the effect of foliar application of silicic acid (SA), an important available form of Si, on the population growth of aphids (Lipaphis erysimi), gas exchange parameters and yield of rapeseed. The first experiment with treatments of foliar spray of 0.4% SA and a control, revealed a significant reduction in L. erysimi population growth in the 0.4% SA treatment (235.60 aphids/ plant) compared to the control (311.16 aphids/ plant). Additionally, the 0.4% SA treatment significantly enhanced rapeseed yield, with 68.28 siliqua per plant, 15.16 seeds per siliqua and 3.73 g yield per plant, compared to the control with 56.08 siliqua per plant, 13.08 seeds per siliqua and 3.26 g yield per plant. The second experiment with treatments of 0.4% SA alone, aphid alone, 0.4% SA + aphid and a control, showed no significant changes in gas exchange parameters for 0.4% SA and the control. However, 0.4% SA + aphid and aphid alone treatments significantly reduced the gas exchange parameters. Notably, 0.4% SA + aphid exhibited a lesser reduction in photosynthetic rate and stomatal conductance compared to aphid alone treatment, indicating the role of SA in enhancing gas exchange parameters during L. erysimi infestation in rapeseed. These findings suggest the beneficial application of SA in rapeseed to reduce aphid infestation, increase gas exchange parameters and improve yield.

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叶面喷施硅酸对蚜虫数量增长、气体交换参数和油菜籽产量的影响

硅（Si）能增强植物对食草动物的抵抗力，提高作物产量。本研究调查了叶面喷施硅酸（SA）（硅的一种重要可用形式）对蚜虫（Lipaphis erysimi）数量增长、气体交换参数和油菜籽产量的影响。第一项实验是叶面喷洒 0.4% 的二氧化硅（SA）和对照，结果显示，与对照（311.16 蚜虫/株）相比，0.4% 的二氧化硅（SA）处理（235.60 蚜虫/株）显著减少了蚜虫数量的增长。此外，0.4% 的 SA 处理显著提高了油菜籽产量，每株油菜籽产量为 68.28 粒小穗轴，每粒小穗轴种子数为 15.16 粒，每株油菜籽产量为 3.73 克，而对照组每株油菜籽产量为 56.08 粒小穗轴，每粒小穗轴种子数为 13.08 粒，每株油菜籽产量为 3.26 克。第二项实验的处理包括单独使用 0.4% SA、单独使用蚜虫、0.4% SA +蚜虫和对照，结果表明 0.4% SA 和对照的气体交换参数没有显著变化。然而，0.4% SA +蚜虫和单独蚜虫处理则显著降低了气体交换参数。值得注意的是，与单用蚜虫处理相比，0.4% SA + 蚜虫处理的光合速率和气孔导度的降低幅度较小，这表明 SA 在油菜籽受蚜虫侵染期间可提高气体交换参数。这些研究结果表明，在油菜中施用 SA 有助于减少蚜虫侵染、提高气体交换参数和产量。

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来源期刊

Phytoparasitica 生物-植物科学

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Phytoparasitica is an international journal on Plant Protection, that publishes original research contributions on the biological, chemical and molecular aspects of Entomology, Plant Pathology, Virology, Nematology, and Weed Sciences, which strives to improve scientific knowledge and technology for IPM, in forest and agroecosystems. Phytoparasitica emphasizes new insights into plant disease and pest etiology, epidemiology, host-parasite/pest biochemistry and cell biology, ecology and population biology, host genetics and resistance, disease vector biology, plant stress and biotic disorders, postharvest pathology and mycotoxins. Research can cover aspects related to the nature of plant diseases, pests and weeds, the causal agents, their spread, the losses they cause, crop loss assessment, and novel tactics and approaches for their management.