Back Packer's disease is

Identify correct match . 1.Die back disease of citrus -(i) Mo 2. Whip tail disease -(ii) Zn 3. Brown heart of turnip - (iii) Cu 4. Little leaf - (iv) B

A disease found only in males is (a) Gaucher's disease (b) Lesch Nyhan disease (c) Hunter 's disease (d) Fabry's disease

Bakanae disease or Foolish seeding disease in cucurbits.

Back cross is

Back cross is

Back cross is

Die back disease in citrus is due to deficiency of :-