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คณะเกษตรศาสตร์ มหาวิทยาลัยเชียงใหม่

 

  ISSN: 0857-0841 (Print)
  ISSN: 2630-029X (Online)
 


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"Article Journal of Agriculture"
Volume 34 Issue 3 September 2018 , ISSN 0857-0841
Title. : Efficiency of Actinomycetes Isolated from Black Dwarf Honey Bee (Apis andreniformis) in Controlling Root - Knot Nematode, Meloidogyne incognita Causes Root Knot Disease of Chili in Greenhouse
Author : Jantima Santisuk, Yaowanoot Promnuan, Amonsri Khun-In, Pongrawee Nimnoi and Pornthip Ruanpanun
Page : 481-490
index word : Meloidogyne incognita การควบคุมโดยชีววิธี(biological control) แอกติโนไมซีทส์(actinomycetes) Apis andreniformis
Abstract:
A total of 33 actinomycete isolates obtained from black dwarf honey bee (Apis andreniformis) were subjected to primary screening in vitro for their effects on Meloidogyne incognita by using their spore suspensions. Eleven isolates showed high activity in decreasing egg hatch rate and increasing infective second-stage juvenile mortality rate of M. incognita significantly. Streptomyces sp. isolate A038 reduced egg hatch rate the most by 92.04% and isolate A027 increased the juvenile mortality rate by 51.31% compared to the control. Then eleven isolates were subjected to secondary screening in vitro for their effects on hatching of egg mass of M. incognita by using their spore suspension. Streptomyces sp. isolate A032 and A031 reduced egg mass hatch rate the most by 69.51% and 69.43%, respectively. In pot experiment, strain A032 presented the highest control efficacy in reducing root gall of chili by 50%. Additionally, this strain promoted chili growth by increasing dry shoot weight.
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