Abstract:
Vegetable crops of family Solanaceae constitute major economical and important
crops in Khartoum state. Although vegetable crops production gains especial priority
unfortunately these crops were highly susceptible to major pests mainly Broomrape
(Orobanche romasa L.), which causes serious yield losses to tomato, potato and
eggplant.
The experiments were conducted at Shamabat Research Station of Agricultural
Research Corporation. With the objectives of studying the effect of the parasitic
flowering plant (Orobanche) on tomato, potato and eggplant)
Results on reactions of Orobanche ramosa L. to major crops indicated that the
Orobanche ramosa L. infestation reached 100% on (Potato, Tomato and Eggplant).
The mean numbers of Orobanche /plant were 5, 2 and 1 on potato, tomato and
eggplant respectively. The mean numbers of Orobanche shoots/ plant were 5, 1 and 3
on tomato, potato and eggplant respectively. The mean number of Orobanche
fruits /plant reached 68 on potato, 72 on tomato and 60/ on eggplant. Mean fresh
weight and dry weight of Orobanche on potato crops reached 95.5 & 31.9 gm, 72 &
15.8, gm on tomato, and on eggplant it was 19.4 & 5.2 gm respectively. Mean fresh
weight of infested potato crop decreased by 14.3% compared to uninfested crops,
mean dry weight of infested potato crop decreased by 9.47% compared to un infested
crop, mean fresh and dry weight of infested tomato crop decreased by 24% & 4.4%
respectively, also mean fresh weight and dry weight of infested eggplant decreased
by 23.02% & 16.28% compared to the control. (significantly effect)
From results of this study it was clear that, these crops are major hosts to
Orobanche ramose L. Production of potato, tomato and eggplant may face serious
yield losses due to infestation by Orobanche ramosa L. This indicated that these
crops are exposed to high risk due to Orobanche ramosa L . invasion.
III
