Using morphological and molecular methods to determine the genetic purity of hybrid seeds of the Egyptian hybrid rice cultivar no.1 [electronic resource].
إستخدام الطرق المورفولوجية والجزيئية لتحديد النقاوة الوراثية في تقاوي الأرز لصنف هجين مصري.
- p.9833-9840.
Includes reference.
The present investigation was carried out at the farm of Sakha Agricultural Research Station, Kafr EI-Sheikh, Egypt, during 2007 and 2008 rice growing seasons by using morphological and molecular me:thods to determine the genetic purity of hybrid seeds of th.e Egyptian hybrid rice cultiva, No,1. Hybrid rice seeds were produced during 2007 sumroler season by using IR 69625 A line (cytoplasmic male sterile line), as a female parent, with the open pollinated male parent, Giza 178 R line, as a restorer line on a large scale under isolated conditions. After harvesting, the seeds, of female line, were cleaned and kept in eight different lots, each lot was about six tons. Samples were taken, randomly, from each lot and tested in the lab. during January 2008. These seeds were sown in the grow out test experiment during summer season in a randomized complete block design, with three replications. All cultural practices were done as recommended. The resuits showed that there were no differences between the data obtained in the laboratory and those obtained in the field regarding the genetic purity and agricultural values. The lot, which possessed high genetic purity gave the highest grain yield (14.250 t I hal, while, that possessed poorer genetic purity gave the lower grain yieid (9.96 t I hal. Phenotypic simple correlation coefficient suggested that genetic purity percentage could be improved by selecting unifonn seeds, based on grain shape, as well as germination percentage. Moreover, lot No.6 showed the highest similarity vaiue of genetic purity (98 %), comparing wfih lot No.5, which gave the lowest similarity value (90.8 % ), while, lot NO.4 gave 96.5 % similarity value