<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Breeding programmes have been recently challenged by climate change. Spring barley (Hordeum vulgare L.) yield, phenological traits (days to heading, length of filling period and days to maturity) and resistance to powdery mildew and net blotch, which are influenced by the rising temperature and precipitation, along with threshability in hulless, were evaluated and their genetic and environmental variability were determined. One hundred and ninety spring barley genotypes were studied, including 129 hulless genotypes and 61 hulled genotypes. The genotypes were grown in the State Stende Cereal Breeding Institute and State Priekuļi Plant Breeding Institute for three seasons during 2007-2009. Broad-sense heritability estimated on the basis of genotypical and phenotypical variances for all traits of hulled barley varied from 31 to 98, and 42 to 98% for hulless barley. For both types of barley the highest heritability was observed for days to heading, filling period and days to maturity. Despite the relatively high estimated heritability for all traits, nevertheless, location, year and interaction of genotype and environment were also been significant for all traits.</p></abstract>

Breeding programmes have been recently challenged by climate change. Spring barley (Hordeum vulgare L.) yield, phenological traits (days to heading, length of filling period and days to maturity) and resistance to powdery mildew and net blotch, which are influenced by the rising temperature and precipitation, along with threshability in hulless, were evaluated and their genetic and environmental variability were determined. One hundred and ninety spring barley genotypes were studied, including 129 hulless genotypes and 61 hulled genotypes. The genotypes were grown in the State Stende Cereal Breeding Institute and State Priekuļi Plant Breeding Institute for three seasons during 2007-2009. Broad-sense heritability estimated on the basis of genotypical and phenotypical variances for all traits of hulled barley varied from 31 to 98, and 42 to 98% for hulless barley. For both types of barley the highest heritability was observed for days to heading, filling period and days to maturity. Despite the relatively high estimated heritability for all traits, nevertheless, location, year and interaction of genotype and environment were also been significant for all traits.

Variation of spring barley agronomic traits significant for adaption to climate change in latvian breeding programmes

State Stende Cereal Breeding Institute, "Dižzemes", Dižstende, Lībagu pag., Talsu nov., LV-3258, LATVIA

State Priekuļi Plant Breeding Institute, Priekuļi, LV-4126, LATVIA

Faculty of Biology, University of Latvia, 4 Kronvalda bulv., Rīga, LV-1586, LATVIA

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

Breeding programmes have been recently challenged by climate change. Spring barley (Hordeum vulgare L.) yield, phenological traits (days to heading, length of...

Variation of spring barley agronomic traits significant for adaption to climate change in latvian breeding programmes

Publié en ligne: 28 juin 2012

Pages: 30 - 35

DOI: https://doi.org/10.2478/v10046-011-0043-z

Mots clés
spring barley, hulled and hulless, agronomic traits, variation, heritability

This content is open access.

Variation of spring barley agronomic traits significant for adaption to climate change in latvian breeding programmes

Publié en ligne: 28 juin 2012

Pages: 30 - 35

DOI: https://doi.org/10.2478/v10046-011-0043-z

Mots clésspring barley, hulled and hulless, agronomic traits, variation, heritability

This content is open access.

Mots clés
spring barley, hulled and hulless, agronomic traits, variation, heritability