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- 저자 : Ching-Wen Tan (검색결과 3 건)
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Ching-Wen Tan,Shaw-Yhi Hwang,Ju-Che Lo,Jitendra Yadav,Kaliova Tavou Ravuiwasa 한국응용곤충학회 2011 Journal of Asia-Pacific Entomology Vol.14 No.3
Defensive proteins, such as polyphenol oxidase (PPO) and trypsin inhibitor (TI), are induced by herbivore wounding and exogenous methyl jasmonate application in various plant species. This study was conducted to measure induction of PPO and TI in radish, sweet pepper, tomato, and water spinach plants following herbivore wounding (I), methyl jasmonate application (M), and a combination of the two treatments (M+I). The effect of induced responses was also examined against third instar Spodoptera litura Fab. PPO activity was induced in radish by treatment I only; in sweet pepper, by treatments I and M; in tomato, by treatments I, M,and M+I; and in water spinach, by treatments M and M+I. The activity of TI was enhanced 1.2–1.4-fold in radish, sweet pepper, and tomato by M and M+I treatments, whereas in water spinach, it was enhanced 1.2-fold by all 3 treatments. The relative growth rate (RGR) of S. litura was reduced by 53% on radish plants following M treatment only. It was reduced by 37% and 42% on sweet paper plants following M and M+I treatment, respectively. RGR was significantly reduced on test tomato plants following I, M, and M+I treatments. The RGR of S. litura was unaffected on water spinach plants following any treatment. Collectively,the results of this study indicated that induction of plant defensive proteins in response to S. litura feeding or exogenous methyl jasmonate application varied among plant species, which further affected the induced plant resistance to the caterpillars.
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Yuwatida Sripontan,Ching-Wen Tan,Mei-Hua Hung,Chiu-Chung Young,Shaw-YhiHwang 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.3
Fertilizer and plant-growth-promoting microorganisms (PGPMs) both benefit crop growth; however, little isknown about the interaction effects when they are combined. This study assessed the effect of PGPMs andfertilizer on plant growth, foliar chemistry, and subsequent insect feeding. Cabbage and tomato plants wereinoculated with PGPMs (fungi and bacteria) and various levels of fertilization. Plant growth parameters (freshweight, dry weight, and leaf area) and foliar chemistry (water content, protein content, and polyphenol oxidaseactivity) were then analyzed. In addition, foliage was also fed to the third instar larvae of Spodoptera litura toevaluate foliage quality. The results indicated that plant performance differed significantly among treatments,and the combined fungi Meyerozyma guilliermondii and fertilizer treatment promoted the greatest plant growth. In summary, PGPMs and fertilization can have their owneffect; their interaction effect, however, need to be clarified.
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Sing-Ying Song,Ching-Wen Tan,Shaw-Yhi Hwang 한국응용곤충학회 2012 Journal of Asia-Pacific Entomology Vol.15 No.4
Host-range and host-specificity tests were performed with Cybocephalus flavocapitis T. R. Smith (Coleoptera:Cybocephalidae) and Cybocephalus nipponicus Endrödy-Younga (Coleoptera: Cybocephalidae), two biological control candidates against the invasive cycad aulacaspis scale, Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae). Seventeen native scale species plus the invasive A. yasumatsui scale were tested in growth chambers using nochoice tests and hosts suitable for each of the two predatory beetles. The results revealed that the two Cybocephalus beetles, one imported species from Thailand and one native species, both fed on relatively similar scale prey species. Additionally, the adult beetles of these two species oviposited only on Diaspididae scales. The results showed that both Cybocephalus beetles may share a similar host niche in Taiwan
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