Gene action, heterosis and combining ability in maize hybrids a-using half diallel analysis

Joint Authors

Khidr, Abbas Allaw
Dawud, Khalid Muhammad
Husayn, Muhammad Ali

Source

Kufa Journal for Agricultural Science

Issue

Vol. 13, Issue 2 (31 Dec. 2021), pp.18-29, 12 p.

Publisher

University of Kufa Faculty of Agriculture

Publication Date

2021-12-31

Country of Publication

Iraq

No. of Pages

12

Main Subjects

Agriculture

Topics

Abstract EN

A diallel cross comprising of eight pure lines of maize, ZP-505, IK58, HS, DK-17, ZP-430, ZP-595, U, N44052, and POL-158, was studied for nine traits (number of days to silking, number of days to tasseling, plant height, ear height, leaf area, number of rows per ear, number of grains per300-grain grain weight, and grain yield per plant, to identify the combining ability effects, nature of gene action heterosis.

The results revealed that the mean square for all genotypes was highly significant for all which's that is an indication of the genetic diversity between parentcausesch cause significant differences between single crosses among them.

Also, it was shown that the mean square due to general and specific combining abilities was highly significant for all traits indicated the presence of additive and dominant gene effects controlling the effect of all traits.

The ratio of general combining ability components to the specific combining ability components was less than one for all traits indicated that the dominance gene effects were more prominent for all studied traits.

The line ZP-595 and POL-158 were the best general combiners for larger number of traits including grain yield per plant, and the crosses (ZP-505 x UN44052) and (HS x DK-17) showing highly significant specific combining ability effects and heterosis for larger number of traits and could be utilized for developing high yielding hybrid varieties as well as for exploiting hybrid vigor.

The narrow sense heritability was low for all traits and ranged from 3.23% for 300 grain weight and 23.13% for number of days to silking.

American Psychological Association (APA)

Husayn, Muhammad Ali& Dawud, Khalid Muhammad& Khidr, Abbas Allaw. 2021. Gene action, heterosis and combining ability in maize hybrids a-using half diallel analysis. Kufa Journal for Agricultural Science،Vol. 13, no. 2, pp.18-29.
https://search.emarefa.net/detail/BIM-1355533

Modern Language Association (MLA)

Husayn, Muhammad Ali…[et al.]. Gene action, heterosis and combining ability in maize hybrids a-using half diallel analysis. Kufa Journal for Agricultural Science Vol. 13, no. 2 (2021), pp.18-29.
https://search.emarefa.net/detail/BIM-1355533

American Medical Association (AMA)

Husayn, Muhammad Ali& Dawud, Khalid Muhammad& Khidr, Abbas Allaw. Gene action, heterosis and combining ability in maize hybrids a-using half diallel analysis. Kufa Journal for Agricultural Science. 2021. Vol. 13, no. 2, pp.18-29.
https://search.emarefa.net/detail/BIM-1355533

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 27-29

Record ID

BIM-1355533