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بسم الله الرحمن الرحيم PowerPoint PPT Presentation


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بسم الله الرحمن الرحيم.

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بسم الله الرحمن الرحيم

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: ( )


Cotton Nematodes

  • . . /


Cotton Nematodes

  • , , , .


  • , , , .. , .


  • :-

  • Helicotylenchus SPP. , Hoplolaimus SPP . , Meliodogyne SPP , Pratylenchus SPP . Trichodorus SPP , Tylenchorhynchus SPP, Rotylenchulus reniformis .

  • .


() 15-35 . .



  • (0.4 -4) (20-250) . . . .



.

.

:

. .........


,


  • :-


  • (1) Root knot

  • Root knot nematodes ( Meloidogyne spp.)

  • .


Root-knot


  • 25% .


  • .


:-

  • 25-27 9 40 .


  • 2500 .

  • 70 M. arenaria , M. hapla , M. javanica , M. incognita .


  • M. hapla M.javanica ,M. incognita - .

  • . .


:-

1- :-

  • .

  • .

  • , ( ) , .


  • giant cells , .

  • , .


2- :-

  • , .

  • 25%.


  • :- () .


  • Sausage-shaped .


  • ( ) ( 500 ) 15 40 7-10 .


  • 4 .



Meloidogynespp.


(2) Lesion nematode

Pratylenchus spp.

.

.


  • Pratylenchus 166 P.penetrans,P.brachyurus,P.coffeae,P.vulnus,P.zeae


- P.coffeae P.penetrans, P.vulnus .


Lesion


  • .


( ) Pratylenchusvulnus.( )


  • . .


  • .

  • secondary organisms necrotic hyperplasia .


3 ( ) .

40 .


3- Stubby - roots

  • Trichodorus spp. ..

  • .

  • .


4 - Stunt plants

  • Tylenchorhynchus spp. .

  • .

  • .


5- Reniform nematode)Rotylenchulus reniformis )

  • .


  • 30-60% .


  • .

  • .


  • .


  • 65 Rotylenchulus

  • Rotylenchulus reniformis .


  • Fusarium wilt .


  • 3 25 ( ) .


:-

  • 1- .

  • 2- .

  • 3- .

  • 4- 2-3 . .


Resistant/Not Resistant


Solarization- Laying Clear Plastic


  • .


THANKS


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