Data of the present work throw light on the evaluation of some Egyptian wheat entries at both
seedling and adult stages against either leaf or stripe rust diseases. Among 36 entries, 10 and 6 entries were
resistant against races No’s 57 and 77 of leaf rust pathogen (Puccinia recondita), while, 9,13,13 entries
proved to be resistant against tested isolates no. 1, 2 and 3 of stripe rust (Puccinia striiformis), respectively.
According to the data of two seasonal field experiments, under the stress of artificial inoculation
by the two pathogens, Sakha 24 entry exhibited the highest level of resistance to stripe rust. Meanwhile,
disease severity ranged between trS. and 80S. The least area under disease progress curve (AUDPC) was
recorded with Sakha 24 entry, while the reverse was true with both Sids 7 and Sids 9 wheat entries. The
yield components of the tested entries were significantly different as affected by the disease. The highest
loss (%) due to stripe rust was recorded in Sids-5 and Sids-9 entries, however, the least affected was Sakha-
10 entry.
As regard to leaf rust, the new promising lines i.e. 202, 204 and 206 proved to be distinctive,
however, the rest of tested materials showed a response ranged between 5 and 80% susceptibility.
Generally, the highest AUDPC was recorded with both Sids-1 and Giza-139 entries, however, the reverse
was observed with Tosson wheat entry. |
