tailieunhanh - Đánh giá khả năng kháng khuẩn của Ageratum conyzoides L. ức chế vi khuẩn Xanthomonas oryzae pv. oryzae gây bệnh cháy bìa lá lúa

Mục đích của nghiên cứu này nhằm xác định khả năng ức chế vi khuẩn Xanthomonas oryzae pv. oryzae (Xoo) trên đĩa petri và ảnh hưởng đến sự nảy mầm của hạt lúa bằng dịch trích từ cỏ cứt heo (Ageratum conyzoides L.). | TNU Journal of Science and Technology 228 09 95 - 101 EVALUATION ANTIBACTERIAL PROPERTY OF Ageratum conyzoides L. TO AGAINST BACTERIAL LEAF BLIGHT ON RICE BY Xanthomonas oryzae pv. oryzae Mai Nhu Phuong1 Tran Thi Thu Thuy2 1Bac Lieu University 2Vietnam Association for Research on Plant Diseases ARTICLE INFO ABSTRACT Received 17 3 2023 The aim of the study was to determine the ability to inhibit Xanthomonas oryzae pv. oryzae Xoo in a petri dish and affects the germination of rice Revised 16 5 2023 seeds by extract of Ageratum conyzoides L. The antibacterial assay was Published 16 5 2023 determined by well diffusion method on Wakimoto media with 5 replications. The results showed that the antibacterial ability of the KEYWORDS treatments was not different compared to the control steriled water with an inhibitory zone from 0 to mm after 96 hours after inoculation. Ageratum conyzoides Therefore different concentrations of plant extraction from A. conyzoides Bacterial leaf blight L. were considered to have no direct antibacterial effect against Xoo. Plant extraction Evaluated rice seed germinate ability by extraction of A. conyzoides L. showed that the extract treatment had the same length of chlorophyll as Rice the control treatment steriled water at 48 72 and 96 hours after Xanthomonas oryzae inoculation. Regarding the length of roots all treatments were the same as the control treatments at 72 and 96 hours after inoculation. Therefore it can be concluded that soaking A. conyzoides L. extract at different concentrations was not affect the germination of rice seeds. Furthermore 2 concentration of A. conyzoides extraction applied the soaking seed or combination between 25 DAS AND 35 DAS gave lesion length reduction at 7 days after inoculation. ĐÁNH GIÁ KHẢ NĂNG KHÁNG KHUẨN CỦA Ageratum conyzoides L. ỨC CHẾ VI KHUẨN Xanthomonas oryzae pv. oryzae GÂY BỆNH CHÁY BÌA LÁ LÚA Mai Như Phương1 Trần Thị Thu Thủy2 1Trường Đại học Bạc Liêu 2Hội Bệnh hại Thực vật Việt Nam THÔNG