Effect of Earliness per se gene on selected kernel physical traits in barley

Ahmed Ibrahim1, 2, Matthew T. Harrison1, Peter Johnson1, Holger Meinke1 and Meixue X. Zhou1

1 Tasmanian Institute of Agriculture (TIA), 165 Westbury Rd Prospect, Tasmania, 7320, Ibrahim.Ahmed@utas.edu.au

2 Institute for Agricultural Research, Ahmadu Bello University, Zaria, Nigeria.


Kernel physical traits in barley are important in determining the suitability of a variety for either malting or feed. A pair of near isogenic lines (NILs) differing in the earliness per se gene (Eps5HL) on chromosome 5HL were evaluated for these traits. NILs had a significantly higher percentage of big kernels (P < 0.05). Significant differences (P < 0.05) in 1000-kernel weight were found between the two NIL lines and between the parents. For kernel hardness, Franklin had a higher particle size index (PSI) (56%) than TX9425 (51.3%) but no difference was found between the NIL lines. We therefore concluded that the Eps5HL locus of the NILs showed significant effects on kernel size and 1000-kernel weight, but not on kernel hardness.


The Australian Society of Agronomy is the professional body for agronomists in Australia. It has approximately 500 active members drawn from government, universities, research organisations and the private sector.

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David Marland Photography david_marland@hotmail.com Southern Farming Systems Agriculture Victoria

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