Evaluation of the relationship between numerical and weight percentage of kernel damaged by sunn pest, Eurygaster integriceps

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MOHAGHEGH J.; ABOLHASSANI A.

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Paper Information

Journal: Applied Entomology and Phytopathology Year:2018 | Volume:86 | Issue:1 (106) Page(s): 115-120

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Title

Evaluation of the relationship between numerical and weight percentage of kernel damaged by sunn pest, Eurygaster integriceps

Author(s)

MOHAGHEGH J. | ABOLHASSANI A. | Issue Writer Certificate

Keywords

Damaged kernelQ1

Eurygaster integricepsQ2

wheatQ2

Abstract

One of the major damage of sunn pest, Eurygaster integriceps, is its destructive effects on the quality of wheat grains, which is known as sunn pest kernel damaged. Nymphs and adult of the bugs inject salivary glands enzymes by piercing-sucking mouthparts into the grains, which degrade glutens, reduce dough and bread wheat quality. Grain damage percentage is calculated by the both numerical and weighing methods. In this research, an experiment was conducted to compare the relationship between these two methods. We measured 225 damaged wheat grain samples delivered from Arak (n = 30 × 3), Ghazvin (n = 20× 3) and Lorestan (n = 25× 3). A digital scale with 0. 1 mg precision was used to weigh kernels. For these samples, the number and weight of damaged and undamaged grains were recorded. In general, unDamaged kernels with an average weight of 34 mg were heavier than damaged ones with average weight of 30 mg. Although, there was a significant difference between the numerical and the weight values, a significant positive correlation (r = 0. 98; P <0. 0001) was detected between the two methods. By using the equation y = 0. 8374x + 0. 02, where x and y are the numerical and weight values, respectively, we are able to convert values from a given method to another one. However, the weighing method is advantageous in terms of simplicity and speed.

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APA: Copy

MOHAGHEGH, J., & ABOLHASSANI, A.. (2018). Evaluation of the relationship between numerical and weight percentage of kernel damaged by sunn pest, Eurygaster integriceps. APPLIED ENTOMOLOGY AND PHYTOPATHOLOGY, 86(1 (106) ), 115-120. SID. https://sid.ir/paper/357503/en

Vancouver: Copy

MOHAGHEGH J., ABOLHASSANI A.. Evaluation of the relationship between numerical and weight percentage of kernel damaged by sunn pest, Eurygaster integriceps. APPLIED ENTOMOLOGY AND PHYTOPATHOLOGY[Internet]. 2018;86(1 (106) ):115-120. Available from: https://sid.ir/paper/357503/en

IEEE: Copy

J. MOHAGHEGH, and A. ABOLHASSANI, “Evaluation of the relationship between numerical and weight percentage of kernel damaged by sunn pest, Eurygaster integriceps,” APPLIED ENTOMOLOGY AND PHYTOPATHOLOGY, vol. 86, no. 1 (106) , pp. 115–120, 2018, [Online]. Available: https://sid.ir/paper/357503/en

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