GEMMIZA 10: A NEW EGYPTIAN HIGH YIELDING AND RUST RESISTANT BREAD WHEAT CULTIVAR

Document Type : Original Article

Authors

1 National Wheat Res. Prog. Field Crops Res. Institute, ARC, Giza, Egypt.

2 Creal Disease Res. Dept. Plant Pathology Research Institute, ARC, Giza, Egypt.

Abstract

The three wheat rusts, stripe, stem and leaf caused by Puccinia strifformis,
P. graminis and P. recondita, sequently, are the most destructive diseases that
threaten wheat production in Egypt. Therefore, resistant to these rusts are very
important requirement for licensing the new cultivars released by National Wheat
Research Program1, Agricultural Research Center (ARC). Egypt has been subjected
to four sever attacks from the strip rust causal agent during the last decade of the last
century. This gives Egypilan wheat breeders good opportunity to develop new
promising resistant cultivars and /or lines . Gemmiza 10 is one of the new wheat
cultivars having high yielding potentiality and simultaneously, exhibiting high
resistance to the three rusts.
A total of 97 field experiments were conducted at different levels of yield
trials (preliminary and advanced ) as well as verification yield trials in the farmers’
fields during the period from 1999/2000 to 2003/2004. The obtained results proved
the superiority of the new cultivar Gemmiza 10 as compared with the commercial
checks Sakha 61, Sakha 69, Síds 1 and Giza 168 at both Delta and Middle Egypt in
the old land and at El-Nubara region in the new reclaimed area. Moreover, the
cultivar Gemmiza 10 expressed its high resistance to the three rusts . Qn the other
hand , Gemmiza 10 seems to be sensitive to heat stress prevailing, usually in Upper
Egypt during late wheat growing season. Therefore, Gemmiza 10 is highly
recommended to be grown at El-Delta T Middle Egypt and El-Nubaria regions.