First slide

Plant Growth Regulators

Question

Which disease is associated with the discovery of Gibberellins?

Easy

A

Bakanae fungal disease
B

Root wilt of coconut
C

Hope stunt
D

White rust of crucifers

Solution

The ‘bakanae’ (foolish seedling) disease of rice seedlings, was caused by a fungal pathogen Gibberella fujikuroi. E. Kurosawa (1926) reported the appearance of symptoms of the disease in rice seedlings when they were treated with sterile filtrates of the fungus. The active substances were later identified as gibberellic acid.

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