Diallel analysis for physiological traits and grain yield of seven white maize inbred lines [electronic resource].

By: Language: English Summary language: Arabic Description: p.9-17Other title:
  • تحليل الدياليل للصفات الفسيولوجية ومحصول الحبوب لسبعة سلالات بيضاء من الذرة الشامية [Added title page title]
Uniform titles:
  • Alexandria journal of agricultural research, 2014 v. 59 (1) [electronic resource].
Subject(s): Online resources: In: Alexandria Journal of Agricultural Research 2014.v.59(1)Summary: Diallel cross among seven diverse inbred lines of maize were evaluated for general (GCA) and specific (SCA) combining ability effects during 2011. Twenty one F1,s and two standard white check (SC10 and SC128) were evaluated at Ismailia and Mallawy Research Stations using a randomized complete block design with four replications during the summer season of 2012. The combined analysis of variance was performed tor data on days to 50% silking (DS), plant height (PH), ear height (EH), ear position% (EP), o. of rows/ear (RE), no. of grains/row (GR) and grain yield ard/fad. (GY). Estimation of combining ability effects were determined according to Griffing ( 1956) Method-4 Model-1 (For simplest, the all data were calculated over means of two locations). Signiticant differences were found for genotypes and genotypes x location for all traits, except tor RE and GR. Genotypes x location interaction was significant for all studied traits, except for RE and GR. Both additive and non- additive gene action were found to be important in controlling all studied traits. However, the non-additive gene action was more important than the additive gene action, suggesting that non-additive genetic effects played an effective role in the inheritance of all studied traits, except GY. Key words: maize, G. C. A., S. C. A., genetic variability, physiological, yield traits.
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Diallel cross among seven diverse inbred lines of maize were evaluated for general (GCA) and specific (SCA) combining ability effects during 2011. Twenty one F1,s and two standard white check (SC10 and SC128) were evaluated at Ismailia and Mallawy Research Stations using a randomized complete block design with four replications during the summer season of 2012. The combined analysis of variance was performed tor data on days to 50% silking (DS), plant height (PH), ear height (EH), ear position% (EP), o. of rows/ear (RE), no. of grains/row (GR) and grain yield ard/fad. (GY). Estimation of combining ability effects were determined according to Griffing ( 1956) Method-4 Model-1 (For simplest, the all data were calculated over means of two locations). Signiticant differences were found for genotypes and genotypes x location for all traits, except tor RE and GR. Genotypes x location interaction was significant for all studied traits, except for RE and GR. Both additive and non- additive gene action were found to be important in controlling all studied traits. However, the non-additive gene action was more important than the additive gene action, suggesting that non-additive genetic effects played an effective role in the inheritance of all studied traits, except GY. Key words: maize, G. C. A., S. C. A., genetic variability, physiological, yield traits.

Summary in Arabic.

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