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| Effects of Herba Asari Extracts on Eggplant Verticillium dahliae，Its Growth and Resistance Physiological Indexes |
| ZHOU Bao-li，JIANG Chun-yun，CHEN Zhi-xia，LI Teng-fei，SONG Yan |
| College of Horticultural，Shenyang Agricultural University，Shenyang 110161，Liaoning，China |
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Abstract The effects of different Herba asari extracts concentrations on eggplant disease resistance to Verticillium dahliae，seedling growth and activities of defense enzymes were investigated by inoculating Verticillium dahliae．The results showed that the disease incidence and disease index of eggplant Verticillium dahliae were both decreased after applying Herba asari extracts of different concentrations compared with the contrast．With the increase of concentration，eggplant Verticillium dahliae resistance increased firstly and then slightly decreased，and yet the preventive treatment effect was better than cure treatment．The best controlling effect（86.26%）was found when the concentration reached 4 g•L-1. Eggplant stem height，stem diameter，fresh weight，relativee electricity conductivity，chlorophyll content，root system vigor and activities of defense enzymes（PAL，POD and SOD）were all promoted by different concentrations of Herba asari extracts．The concentration of 4 g•L-1 could gain the best effect.
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Received: 09 June 2012
Published: 03 August 2012
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