You are in:Home/Publications/HETEROSIS AND COMBINING ABILITY IN MAIZE (ZEA MAYS L.)

Prof. Mohamed Kassem Mohamed Khalifa :: Publications:

Title:
HETEROSIS AND COMBINING ABILITY IN MAIZE (ZEA MAYS L.)
Authors: El - Hosary * A.A.; AM. Morsy’, M.K. Khllfa’; and MA. Abd El Khahk’
Year: 2001
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Mohamed Kassem Mohamed Khalifa_4.pdf
Abstract:

Eight parental inbred line namely Moshtohor M1l0B. M.72, M708, M,27. M.IO1H, M.105g, M.36 and M.106i. representing wide range of variability in most of the studied traits, were utilized. In 1994 all possible combinations were mad among them. In Both 1995and 1996 summer seasons, the eight infred lines and their single crosses as well as three check varieties (SC.10 TWC. 310 and G1za2) were evaluated. The results showed that significant genotypes mean squares were detected for a the studied traits. Significant genotypes by seasons Interaction mean squares were detected for all traits except number of rows/ear. The two crosses M.1 108 x M. 1O1H and M.1O1H x M.106i had significant superiority of grain yield over the best check varieties. The three crosses M.llOBx M.1O1H, M.1O1H x 105g and M.1O1H z M106i out yielded the best check SC. lO by 14.34%. The variance associated with generai((3CA) and specific (SCA) combining ability was significant for aU traits except no of ears ،plant, no of kernels/row and ear diameter which were insignificant GCA effects. With the exception of 100-kernel weight. silking date and stem diameter, the less ratio of GCAfSCA mean squares were detected, indicating that the large portion of the total genetic variability associatei with these traits was due to non-additive gene action. Estimated of GCA effects revealed that the parental lines Ml 01H and 1108 had considerable significantly positive g effects for grain yield& plant and proved to be good combiners. Twenty parental combinations showed significance positive S, effects for grain yield/plant.

Google ScholarAcdemia.eduResearch GateLinkedinFacebookTwitterGoogle PlusYoutubeWordpressInstagramMendeleyZoteroEvernote