EFFECT OF INTERACTION BETWEEN BIOCONTROL FUNGUS TRICHODERMA HARZIANUM AND MYCORHIZAL FUNGUS  GLOMUS MOSSAE  IN FUSARIUM WILT DISEASE ON SOME PEPPER CULTIVARS

A. Hassan, Abdullah; Hamid Nasir, Maryam

	EFFECT OF INTERACTION BETWEEN BIOCONTROL FUNGUS TRICHODERMA HARZIANUM AND MYCORHIZAL FUNGUS GLOMUS MOSSAE IN FUSARIUM WILT DISEASE ON SOME PEPPER CULTIVARS
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 14, Issue 3, 2014, Pages 116-129
Authors
Abdullah A. Hassan; Maryam Hamid Nasir
Abstract
Four fungal isolates related to Fusarium oxysporum f.sp.capsici including (F.o.c 1, F.o.c 2 , F.o.c 3 and F.o.c4) were isolated and identified from infected pepper plants in some Salah Aldin governorate regions for the study of intraction between biocontrol agent Trichoderma harzianum (T.h) and mycorhizal fungus Glomus mossae (G.m) in fusarium wilt disease on some pepper cultivars,. Although the pathogensis was conducted on all F.o.c isolates using pot experiments, F.o.c 2 was the most pathogenesis superior in infection percentage resulting in 72.6 , 81.4 and 79.3% in hot Ic stevert ,Mandaran F1 and cold local cultivars, respectively.in addition the higher infection severity was recorded by the same isolate (F.o.c2) resulting in 0.78 , 0.81 and 0.84 in these cultivars , respectively.the field experiment was carried out in Agriculture college, Tiktit university during 2012-2013 for the intraction between biocontrol agent Trichoderma harzianum (T.h) and mycorhizal fungus Glomus mossae (G.m) in fusarium wilt disease on some pepper cultivars, the results showed that both T.h+ G.m reduce the infection percentage and disease severity from( 69.0%, 0.76) , (80%, 0.784) and (76%, 0.83) in the infected hot Ic stevert ,Mandaran F1 and cold local cultivars to (20.5%,0.184),(26%,0.203) and (22.5%,0.254) in these infected cultivars when treated with (T.h+G.m), respectively. The results also showed a significant superior in improvement of some growth parameters including shoot and root dry weight in T.h , G.m and (T.h+G.m) treatments in both infected and non-infected plants in all studied cultivars , this improvement reflect to significant superior in cultivars productivity, the maximum yield was increase from 97, 175 and 74.3 g dryer fruits/plant in the infected Ic stevart, mandaran F1, and local cultivars to 372,411 and 373 g dryer fruits /plant in the same infected cultivar when treated with (T.h+G.m) respectively.
Keywords
Biocontrol; mycorhizae; fungus; fusarium peper

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