Abd EI-Maksoud,, M., EI-Adl, A., EI-Diasty, Z., Galal, A., Hassanien, R. (2004). EVALUATION OF SOME PROMISING MAlZE CROSSES FOR THEIR GENETIC BEHAVIOR IN SOME fMPORTANTTRAITS. Journal of Plant Production, 29(4), 1787-1800. doi: 10.21608/jpp.2004.238603
M. M. Abd EI-Maksoud,; A. M. EI-Adl; Z. M. EI-Diasty; A. R. Galal; R. S. Hassanien. "EVALUATION OF SOME PROMISING MAlZE CROSSES FOR THEIR GENETIC BEHAVIOR IN SOME fMPORTANTTRAITS". Journal of Plant Production, 29, 4, 2004, 1787-1800. doi: 10.21608/jpp.2004.238603
Abd EI-Maksoud,, M., EI-Adl, A., EI-Diasty, Z., Galal, A., Hassanien, R. (2004). 'EVALUATION OF SOME PROMISING MAlZE CROSSES FOR THEIR GENETIC BEHAVIOR IN SOME fMPORTANTTRAITS', Journal of Plant Production, 29(4), pp. 1787-1800. doi: 10.21608/jpp.2004.238603
Abd EI-Maksoud,, M., EI-Adl, A., EI-Diasty, Z., Galal, A., Hassanien, R. EVALUATION OF SOME PROMISING MAlZE CROSSES FOR THEIR GENETIC BEHAVIOR IN SOME fMPORTANTTRAITS. Journal of Plant Production, 2004; 29(4): 1787-1800. doi: 10.21608/jpp.2004.238603
EVALUATION OF SOME PROMISING MAlZE CROSSES FOR THEIR GENETIC BEHAVIOR IN SOME fMPORTANTTRAITS
1Dept. of Genet., Fac. of Agrlc., Mansoura Unlv., Mansoura, Egypt.
2Maize Section, Field Crop Institute, ARC, Giza, Egypt.
Abstract
The nature of gene action lor yield and ,LS components was studied in four populations of white maize (Zea mays L.). Six populations (PI. PL. F,. F 2. BC 1 and 8C~) of lour promising crosses amor.g five inbred lines for each cross were evaluated for silking dale. plant height. ear height. number of kernels/row. number of rows/ear, ear length, ear diameter and grain ylelctJplant through lwo successive seasons These crosses were S<j.7 x Sd·34. Sd-7 x L·7041, Gz-628 x L·8084 and L-70<l1 ;< L·8084. The rssutts obtained revealed the presence 01 highly signlfiC<lrlt differences among crosses as well as populations wilJ'lln each cross whh respect 10 all tM studied traits. Furthermore. crosses and populations within crosses inleracted signlllcanUy with years for all the studied traits. This finding detected that these crosses and tneir populations gave different performances in diiferent years (or the studied trails. tn addition. the results sroweo thai the non-additive genetic variance including dominance play the major (ole in the genetic expression of these traits. Also. the results Indicated that mOSI of the siuoied uaus wer8 signific.anUy influenced by one 01 more types of epistatic gene effect, which included aodiuve x additive (aa), dominance x dominance (dd) and additive x dominance (ad) gena effects 8S appeared in Ihe tour crosses lor yield and other lrails, indicalinO tha role of non- allelIc inleraclion in lJ'le genetic expression of studied traits. From the previous results, it could be concluded that the prcducuon 01 hybrids Is the best bretldiflg program (or the improvement of maize wilh respect to the studied trails.
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