![](/images/graphics-bg.png)
Combining ability of some maize top-crosses
Other Title(s)
القدرة على الائتلاف لبعض الهجن القميه للذرة الشامية
Joint Authors
Abd al-Zahir, Ibrahim Najah
Yasin, Hamzah al-Sayyid
Haridi, Mukhtar Hasan
Hamidah, Said Shaban
Source
Assuit Journal of Agricultural Sciences
Issue
Vol. 47, Issue 4 (31 Aug. 2016), pp.1-15, 15 p.
Publisher
Assiut University Faculty of Agriculture
Publication Date
2016-08-31
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
This investigation was conducted during 2013-2015 to determine the productivity and combining ability of some maize genotypes (74 top-crosses and two check hybrids).
Genotypes evaluated at Experimental Farm, Faculty of Agriculture, Al-Azhar University at Assiut Branch.
The obtained results revealed that highly significant differences were found among top-crosses and lines as well as, significant or highly significant differences between two testers and the interaction of lines x testers for all studied traits, except ear diameter for testers.
Significant desirable GCA effects were found of some inbred lines for all studied traits.
Line No.1 had the highest negative GCA effect for number of days to 50% tasseling.
So, Line No.1 a good combiner for early tasseling.
The highest GCA for grain yield/plant (28.37) was obtained from line No.2 The tester SC-10 was significantly the best general combiner for number of days to 50% tasseling, number of days to 50% silking, ear diameter and number of rows/ear while, the tester TWC-324 was significantly the best general combiner for plant height, ear length, 100-kernel weight and grain yield/plant.
Significant desirable SCA effects were found of some top-crosses for all studied traits.
Top cross (L8 x SC-10) gave the earliest tasseling (53 days).
The highest grain yield /plant (241.37 g) was obtained from Top cross (L31 x TWC-324).
The variance due to GCA-L was higher than GCA-T for all studied traits, indicating that most of GCA variance was due to lines.
The variance of SCA exceeded that the variance of GCA (average) for all the studied traits, indicating that the non-additive gene action played an important role in the inheritance of all the studied traits.
Contribution of lines was higher than testers for all studied traits.
So, Lines played the major role in the inheritance of traits
American Psychological Association (APA)
Yasin, Hamzah al-Sayyid& Abd al-Zahir, Ibrahim Najah& Haridi, Mukhtar Hasan& Hamidah, Said Shaban. 2016. Combining ability of some maize top-crosses. Assuit Journal of Agricultural Sciences،Vol. 47, no. 4, pp.1-15.
https://search.emarefa.net/detail/BIM-882786
Modern Language Association (MLA)
Yasin, Hamzah al-Sayyid…[et al.]. Combining ability of some maize top-crosses. Assuit Journal of Agricultural Sciences Vol. 47, no. 4 (Aug. 2016), pp.1-15.
https://search.emarefa.net/detail/BIM-882786
American Medical Association (AMA)
Yasin, Hamzah al-Sayyid& Abd al-Zahir, Ibrahim Najah& Haridi, Mukhtar Hasan& Hamidah, Said Shaban. Combining ability of some maize top-crosses. Assuit Journal of Agricultural Sciences. 2016. Vol. 47, no. 4, pp.1-15.
https://search.emarefa.net/detail/BIM-882786
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-882786