Effects of climatic factors on grain vitreousness stability and heritability in durum wheat
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2014
Authors
Branković, GordanaŠurlan-Momirović, Gordana
Dodig, Dejan
Dragičević, Vesna
Zorić, Miroslav
Đurić, Nenad
Article (Published version)
Metadata
Show full item recordAbstract
Modern durum wheat breeding programs are becoming more oriented toward creation of not only high-yield cultivars but also high quality, with good stability for the trait of interest. Vitreousness of grain is associated with semolina granulation, color, and protein content; it is regarded as one of the most important characteristics in the grading industry, affecting the commercial value of the commodity. A set of 15 winter and facultative durum wheat genotypes was tested for grain vitreousness across 6 environments for 2 consecutive years. Three-way analysis of variance showed that genotype, location, and year contributed 4.1%, 20.6%, and 42.2% to the total sum of squares, respectively. Interaction terms, including genotype, contributed 6.1% to the total sum of squares, and location x year contributed 27.0%. Stability of grain vitreousness for the examined breeding lines and cultivars of durum wheat was shown by the site's regression. Broad-sense heritability of grain vitreousness was ...estimated to be 71%. Climatic variables were used for factorial regression modeling, and most of the interaction term for grain vitreousness was explained by mean temperatures in June (54.4%) and April (14.2%), and precipitation (14.4%) and sunshine hours (14.3%) in March. During the grain filling and grain ripening stages, the most influential climatic variables in explaining interaction were maximum temperature (43.4%), precipitation (30.9%), and sunshine hours (5.6%).
Keywords:
Durum wheat / climatic factors / heritability / stability / vitreousnessSource:
Turkish Journal of Agriculture and Forestry, 2014, 38, 4, 429-440Publisher:
- Tubitak Scientific & Technical Research Council Turkey, Ankara
Funding / projects:
- Study of the genetic basis of improving yield and quality of small grains in different environmental conditions (RS-MESTD-Technological Development (TD or TR)-31092)
DOI: 10.3906/tar-1308-51
ISSN: 1300-011X