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XENIA…ONE OF THE MOST EXPERIMENTAL SOURCES OF ERROR | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 39, Issue 3, 2008, Pages 33-36 | ||
| Author | ||
| Majid Sh. Hamdalla | ||
| Abstract | ||
| Deprecation of experimental error consider fundamnental for result of any trial .The precision of experiment conducting that researchers wish, include concepts of experimental error sources. The sources of experimental error vary, like differences in treatments conducting and technical mistakes which are occurring during samples harvesting and measuring, but the resulted effect from the genetic variation among population plant consider the major factor. This study is devoted for discussion one of the most important genetic variation that is xenia in sense of its turn in raising the level of experimental error in the field trial which included many genotypes of cross-pollinated crops, especially maize. Also, this study suggested convenience approaches to detract the experimental error due to xenia. The potential influence of xenia come out on grain yield, kernel growth rate, and duration of grain filling, in addition to change qualitative characters. These effects arc interacted with studied factor effects which are raising the level of experimental error. Epically with cultivars comparison or hybrids with it parents to investigate it's the performances and when leave it to open pollination, also, when factorial experiments are conducted which include many levels of any factor and many levels of genotypes for another factor. Therefore xenia is classify as one of experimental error sources. We have suggested many approaches to decrease the xenia effects by usage homozygous population with narrow genetic base, sellfing the inbreds in comparison trials, choice the convenient experimental design that proper tionai to the amount of genetic variation, and an excess the exprinrentai unit area. | ||
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