الفهرس 
Pathogenecity testsOnly 14 pages are availabe for public view
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Abstract
Wheat i s t h e w o r l d ’ s l e a d i n g g r a i n c r o p . Its i m - p o r t a n c e is d e r i v e d from t h e f a c t t h a t i t i s t h e m a j o r f o o d c r o p t h r o u g h o u t t h e w o r l d , t h e r e f o r e , i t is c o n s i -D e r e d t h e most s t r a t e g i c g r a i n c r o p . F o r t h e l a s t 50 y e a r s , Egypt is c o n s i d e r e d t o be a wheat i m p o r t e r c o u n t r y . The i n v e s t i g a t i o n u n d e r s t u d y a i m s t o s t u d y t h e i n h e r i t a n c e of r e s i s t a n c e of wheat stem r u s t c a u s e d by P u c c i n i a graminis y t i t i c i i n Egypt and t o m a n i f e s t t h e g e n e t i c c o n s t i t u t i o n s of t h e h o s t , p a t h o g e n and host- - p a t h o g e n complex i.e. a e g r i c o r p u s , t h r o u g h o u t t h e s e g r e g a t i o n r a t i o . The p r e s e n t work was e s t a b l i s h e d on t h e r e s u l t s d e r i v e d from F1, F2 and Fg o f s i x c r o s s e s among f o u r b r e a d w h e a t c u l t i v a r s . T h e s e v a r s . a r e known t o be v a r i a b l e i n t h e i r r e s p o n s e t o stem r u s t d i s e a s e as f o l l o w s : 1- Mabrouk ( s u s c e p t i b l e ) 2- Kal-Bb X Ald”sl’ ( r e s i s t a n t )3- Sakha 8 ( i n t e r m e d i a t e (4- Sakha 61 ( i n t e r m e d i a t e )