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Variability, Heritability and Genetic Advance Analysis in Bread Wheat (Triticum Aestivum L.) Genotypes in Northwestern Ethiopia

Misganaw Ferede


Fisseha Worede

Misganaw Ferede 1

Fisseha Worede 2

  1. Plant Breeder, Adet Agricultural Research Center, Bahir Dar, Ethiopia. 1

  2. Plant Breede, Bahir Dar University, Bahir Dar, Ethiopia. 2

Pages: 56-65

DOI: 10.18488/journal.70.2020.72.56.65

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Article History:

Received: 07 October, 2019
Revised: 14 November, 2019
Accepted: 17 December, 2019
Published: 27 January, 2020


Studies on degree of genetic advance as well as rate of genetic progress in grain yield and yield associated traits in bread wheat genotypes over years are limited. Therefore, this study was initiated to explore genetic advance and rate of genetic progress over years in bread wheat breeding program. Twelve bread wheat genotypes released in between 1995-2012 were used as experimental treatments. The experimental treatments were laid out on randomized complete block design with three replications across locations over years. The study was conducted at Adet, Debretabor, Finoteselam, Injibara and Simada in 2014 and 2015 cropping seasons. The traits grain yield, biological yield, spike length, number of seeds per spike and thousand seed weight showed medium genetic and phenotypic variation, higher heritability and medium genetic advance to the mean of the population whereas days to physiological maturity, plant height, and test weight showed negligible in both genotypic and phenotypic variation, higher heritability and negligible genetic advance to the mean of the population. In the genetic advance analysis over years, only thousand seed weight showed positive significant increment while grain yield, biological yield, days to physiological maturity, plant height and test weight showed positive non-significant increment. Meanwhile spike length and number of seeds per spike showed negative non-significant decrement over 18 years. Therefore, breeders should be considered the yield related traits to bring the desired genetic enhancement as well as to develop demanded genotypes in the future bread wheat breeding investigations.
Contribution/ Originality
This study is one of very few studies which have investigated the magnitude of genetic advance of grain yield and yield related traits in bread wheat released varieties in Ethiopia. This study documents is vital to plant breeders to consider the non-significant steady increment of grain yield in bread wheat released varieties over 18 years.


Bread wheat, Breeding investigation, Genetic advance, Genetic coefficient of variation, Grain yield, Heritability, Phenotypic coefficient of variation, Variability, Wheat rust.



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The research study is funded by Adet Agricultural Research Center, Amhara Agricultural Research Institute and College of Agriculture and Environmental Science, Bahirdar Universty.

Competing Interests:

The authors declare that they have no competing interests.


The authors greatly would like thank you, all of you who are participated this piece of research work from the beginning to the end.

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