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Optimizing test locations and identifying promising genotypes in ICARDA barley breeding program

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Title Optimizing test locations and identifying promising genotypes in ICARDA barley breeding program
 
Creator Visioni, Andrea
 
Contributor Singh, Murari
Rehman, Sajid
Gyawali, Sanjaya
Verma, Ramesh Pal Singh
 
Subject test locations
Barley
 
Description Barley (Hordeum vulgare L.) is an important cereal crop with versatile use as animal feed, forage and
human consumption in the low rainfall situations around the world. Recently the industrial use in malting
and brewing is also becoming popular in the developing countries with the possibilities of additional
income from premium price for better grain quality. ICARDA has taken a note of this and initiated the high
input program targeted towards malting and high value feed barleys. There is need for developing high
yielding barley genotypes suitable for the mandate regions to meet growing demand. In order to optimize
the test locations and identify the better genotypes this study undertook the evaluation of a total of 544
genotypes with seven checks at three locations (Terbol in Lebanon; Marchouch and Allal Tazi in Morocco)
with diverse agro-ecological conditions. Genotypes were evaluated in eight trials sets (six of hulled and two
of hull-less genotypes). The mixed models were fitted to evaluate variance components, heritability,
genotype x environment interactions and predicted means for identifying the high yielding genotypes.
Specific adaptation of genotypes to the locations was assessed in terms of the genotypes performance
overall the locations and adding the specific environment effect as GxE interaction, denoted as GGE and
presented as GGE-bi-plot. Amongst the three locations, Terbol showed maximum discrimination of
genotypes and genotypes specifically adapted to each location followed by Marchouch. Significance of
response of different sets of genotypes to location varied with trials and location. GxE interaction across
locations was significant for days to heading, days to maturity, plant height, spike length and grain yield.
Several hulled genotypes with higher grain yield and early flowering time were identified in the three
environments for further evaluation in other barley growing environments in Asia and Africa.
 
Date 2017-02-08
2017-02-20T13:19:16Z
2017-02-20T13:19:16Z
 
Type Poster
 
Identifier https://mel.cgiar.org/reporting/download/hash/3zdRGi22
Andrea Visioni, Murari Singh, Sajid Rehman, Sanjaya Gyawali, Ramesh Pal Singh Verma. (8/2/2017). Optimizing test locations and identifying promising genotypes in ICARDA barley breeding program. Morocco: International Center for Agricultural Research in the Dry Areas (ICARDA).
https://hdl.handle.net/20.500.11766/5816
Open access
 
Language en
 
Rights CC-BY-4.0
 
Format PDF
 
Publisher International Center for Agricultural Research in the Dry Areas (ICARDA)