1Plant Pathology Section, Department of Plant Science and Agricultural Resources, Faculty of Agri... more 1Plant Pathology Section, Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kean 40002, Thailand. 2Agricultural Biotechnology Research Center for Sustainable Economy, Khon Kaen University, Khon Kaen 40002, Thailand 3Center of Agricultural Biotechnology, Khon Kaen University, Science and Technology Postgraduate Education and Research Development Office (AG-BIO/PERDO-CHE), Thailand.
The effect of high temperatures on the growth, yields and heat shock protein (HSP) production of ... more The effect of high temperatures on the growth, yields and heat shock protein (HSP) production of eri silkworm (Samia ricini D.) was carried out by exposure the 5th instar day 3 larvae to different temperatures, 36±1, 40±1, 42±1, 45±1 and 48±1°C for 3 hours, compared to control treatment by rearing eri silkworm continuously at normal temperature (25±2°C, 80±5%R.H.). After treated with high temperature condition, the eri silkworm larvae were reared at 25±2°C, 80±5%R.H.until cocooning, pupation, adult stage, coupling and laying eggs. The result exhibited that survival rates, cocooning rate and almost yields varied inversely to temperatures especially between 42±1 – 48±1°C. At the highest temperature, survivals and yields were the lowest, while those values were the maximum nearly all control treatments. At 48±1°C treatment, the means of all parameters were the lowest; larva survival (50.00%), survival of larva – adult (38.33%) and cocooning rate (41.67%), which were significantly diffe...
International Journal of Wild Silkmoth and Silk (Feb 2008). Effect of some main-and alternate foo... more International Journal of Wild Silkmoth and Silk (Feb 2008). Effect of some main-and alternate food plants on growth of eri silkworm (Samia ricini D.). ... Record number, JP2008007124. Date of publication, Feb 2008. AGRIS Categories, Animal physiology - Nutrition. ... Language, English ...
Improvement of eri silkworm tolerant to high temperature condition was carried out by selection a... more Improvement of eri silkworm tolerant to high temperature condition was carried out by selection and continuous rearing (1-12 generation) under high temperature (42±1 °C) and low relative humidity (50±5%R.H.). The eri silkworm rearing at a normal temperature (25±2 °C; 80±5%R.H.) served as control treatment. The result revealed that eri silkworm was continuously tolerant to high temperature of 42±1˚C with low relative humidity (50±5%R.H.) up to 12 generations. Among treated generations with high temperature, the silkworms survived from larva stage (1 st-5 th instar) to adult in all generations ranking 16.67-54.17%. Between F12 and F1, survival rate of larva-adult stage of F12 was 43.33% less than F1 (54.17%), but not significantly different (P<0.05). For cocoon yields, fresh cocoon weight, pupa weight and cocoon shell weight of F12 were lower than F1. Of F12, shell ratio (11.84%), total cocoon shell weight (5.72g) and fresh cocoon weight/10,000 larvae (9.39 kg) were not significant...
... Language, English. Notes, 1 tab. 3 fig. 25 ref. ... Vol. No. v. 13 p. 61-68. Abstract (Englis... more ... Language, English. Notes, 1 tab. 3 fig. 25 ref. ... Vol. No. v. 13 p. 61-68. Abstract (English), This research aims to apply eri silkworm feces and fungi isolated from their feces for controlling Fusarium wilt in tomatoes. The fungi, 2 isolates of Aspergillus spp., Fusarium sp., Rhizopus sp. ...
The selection of eri silkworm ecoraces with high yield and distinct morphological characters is n... more The selection of eri silkworm ecoraces with high yield and distinct morphological characters is necessary for variety improvement. The five ecoraces SaKKU1, SaKKU2, SaKKU3, SaKKU4 and SaKKU5 were derived mostly by international academic cooperation. They were cultured using castor leaves of TCO 101 cultivar as food plant at 25±2°C, 80±5% R.H. Based on morphological characters, they are similar, except the body of the 5 instar larva of SaKKU1 is clearly covered with more creamy white powder and the mature larva has a shiny dominant yellow color. The duration of the life cycle among ecoraces was also similar; 46-53 days (SaKKU1), 42-53 days (SaKKU2), 42-52 days (SaKKU3), 40-56 days (SaKKU4) and 41-52 days (SaKKU5). SaKKU1 had the highest survival rate at larval stage (1 – 5 instar) (100.00%) and larva (1 – 5 instar) adult (88.89%), including the predominant heaviest average larva weight of all instars, 0.0317 g (2 instar), 0.2206 g (3 instar), 1.0788 g (4 instar), 4.0102 g (5 instar),...
The objectives of this study were to evaluate the efficacy of integrating resistant genotypes of ... more The objectives of this study were to evaluate the efficacy of integrating resistant genotypes of Jerusalem artichoke with Trichoderma harzianum isolate T9 to control Alternaria leaf spot caused by Alternaria spp. under two fertilization regimes and to determine whether T9 application induced chitinase and β-1,3-glucanase activity in Jerusalem artichoke leaves. Six Jerusalem artichoke varieties (resistant varieties JA15, JA86, and JA116 and susceptible varieties HEL246, HEL293, and JA109) and three disease control methods (a non-inoculated control, application of T. harzianum T9, and fungicide sprays (propiconazole at a rate of 30 mL/20 L of water, 375 ppm)) was conducted in two separate trials (different fertilization regimes) at the experimental farm of the Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand. Resistant genotypes controlled Alternaria leaf spot effectively. Application of Trichoderma showed low efficacy to control Alternaria leaf spot, but in specific ...
1Plant Pathology Section, Department of Plant Science and Agricultural Resources, Faculty of Agri... more 1Plant Pathology Section, Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kean 40002, Thailand. 2Agricultural Biotechnology Research Center for Sustainable Economy, Khon Kaen University, Khon Kaen 40002, Thailand 3Center of Agricultural Biotechnology, Khon Kaen University, Science and Technology Postgraduate Education and Research Development Office (AG-BIO/PERDO-CHE), Thailand.
The effect of high temperatures on the growth, yields and heat shock protein (HSP) production of ... more The effect of high temperatures on the growth, yields and heat shock protein (HSP) production of eri silkworm (Samia ricini D.) was carried out by exposure the 5th instar day 3 larvae to different temperatures, 36±1, 40±1, 42±1, 45±1 and 48±1°C for 3 hours, compared to control treatment by rearing eri silkworm continuously at normal temperature (25±2°C, 80±5%R.H.). After treated with high temperature condition, the eri silkworm larvae were reared at 25±2°C, 80±5%R.H.until cocooning, pupation, adult stage, coupling and laying eggs. The result exhibited that survival rates, cocooning rate and almost yields varied inversely to temperatures especially between 42±1 – 48±1°C. At the highest temperature, survivals and yields were the lowest, while those values were the maximum nearly all control treatments. At 48±1°C treatment, the means of all parameters were the lowest; larva survival (50.00%), survival of larva – adult (38.33%) and cocooning rate (41.67%), which were significantly diffe...
International Journal of Wild Silkmoth and Silk (Feb 2008). Effect of some main-and alternate foo... more International Journal of Wild Silkmoth and Silk (Feb 2008). Effect of some main-and alternate food plants on growth of eri silkworm (Samia ricini D.). ... Record number, JP2008007124. Date of publication, Feb 2008. AGRIS Categories, Animal physiology - Nutrition. ... Language, English ...
Improvement of eri silkworm tolerant to high temperature condition was carried out by selection a... more Improvement of eri silkworm tolerant to high temperature condition was carried out by selection and continuous rearing (1-12 generation) under high temperature (42±1 °C) and low relative humidity (50±5%R.H.). The eri silkworm rearing at a normal temperature (25±2 °C; 80±5%R.H.) served as control treatment. The result revealed that eri silkworm was continuously tolerant to high temperature of 42±1˚C with low relative humidity (50±5%R.H.) up to 12 generations. Among treated generations with high temperature, the silkworms survived from larva stage (1 st-5 th instar) to adult in all generations ranking 16.67-54.17%. Between F12 and F1, survival rate of larva-adult stage of F12 was 43.33% less than F1 (54.17%), but not significantly different (P<0.05). For cocoon yields, fresh cocoon weight, pupa weight and cocoon shell weight of F12 were lower than F1. Of F12, shell ratio (11.84%), total cocoon shell weight (5.72g) and fresh cocoon weight/10,000 larvae (9.39 kg) were not significant...
... Language, English. Notes, 1 tab. 3 fig. 25 ref. ... Vol. No. v. 13 p. 61-68. Abstract (Englis... more ... Language, English. Notes, 1 tab. 3 fig. 25 ref. ... Vol. No. v. 13 p. 61-68. Abstract (English), This research aims to apply eri silkworm feces and fungi isolated from their feces for controlling Fusarium wilt in tomatoes. The fungi, 2 isolates of Aspergillus spp., Fusarium sp., Rhizopus sp. ...
The selection of eri silkworm ecoraces with high yield and distinct morphological characters is n... more The selection of eri silkworm ecoraces with high yield and distinct morphological characters is necessary for variety improvement. The five ecoraces SaKKU1, SaKKU2, SaKKU3, SaKKU4 and SaKKU5 were derived mostly by international academic cooperation. They were cultured using castor leaves of TCO 101 cultivar as food plant at 25±2°C, 80±5% R.H. Based on morphological characters, they are similar, except the body of the 5 instar larva of SaKKU1 is clearly covered with more creamy white powder and the mature larva has a shiny dominant yellow color. The duration of the life cycle among ecoraces was also similar; 46-53 days (SaKKU1), 42-53 days (SaKKU2), 42-52 days (SaKKU3), 40-56 days (SaKKU4) and 41-52 days (SaKKU5). SaKKU1 had the highest survival rate at larval stage (1 – 5 instar) (100.00%) and larva (1 – 5 instar) adult (88.89%), including the predominant heaviest average larva weight of all instars, 0.0317 g (2 instar), 0.2206 g (3 instar), 1.0788 g (4 instar), 4.0102 g (5 instar),...
The objectives of this study were to evaluate the efficacy of integrating resistant genotypes of ... more The objectives of this study were to evaluate the efficacy of integrating resistant genotypes of Jerusalem artichoke with Trichoderma harzianum isolate T9 to control Alternaria leaf spot caused by Alternaria spp. under two fertilization regimes and to determine whether T9 application induced chitinase and β-1,3-glucanase activity in Jerusalem artichoke leaves. Six Jerusalem artichoke varieties (resistant varieties JA15, JA86, and JA116 and susceptible varieties HEL246, HEL293, and JA109) and three disease control methods (a non-inoculated control, application of T. harzianum T9, and fungicide sprays (propiconazole at a rate of 30 mL/20 L of water, 375 ppm)) was conducted in two separate trials (different fertilization regimes) at the experimental farm of the Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand. Resistant genotypes controlled Alternaria leaf spot effectively. Application of Trichoderma showed low efficacy to control Alternaria leaf spot, but in specific ...
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Papers by Dr.sivilai Sirimungkararat