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Use of barley seed vigour to discriminate drought and cold tolerance in crop years with high seed vigour and low trait variation
Author(s) -
Ullmannová Kamila,
Stř eda Tomáš,
Chloupek Oldř ich
Publication year - 2013
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12065
Subject(s) - biology , crop , germination , agronomy , population , hordeum vulgare , trait , doubled haploidy , poaceae , horticulture , quantitative trait locus , demography , biochemistry , sociology , computer science , gene , programming language
Abstract Seed vigour is a precondition for early and homogenous field emergence of barley, in addition to effective malting. This study aimed to assess the selection of barley varieties by using seed vigour as the indicator. Seed vigour of barley (quantified as the germination percentage) was evaluated under drought (−0.2 MP a) and temperature stress (10°C). At two locations over a 3‐year period, 1 population of 133 D erkado × B 83‐12/21/5 doubled haploid ( DH ) lines (and parents) was evaluated for seed vigour, of which 108 DH lines were assessed for three malting parameters. The relatively high values of vigour during the 3‐year period (overall average 94–95%) probably impeded high variations in genetic potential. A total of 27 DH lines of the 133 evaluated showed transgression for vigour (up to 98%) in comparison with the parents ( D erkado : 96%; B 83 : 92%). In conclusion, caution should be applied when selecting for seed vigour, even in good crop years with high levels of seed vigour and low trait variations. Such selection might improve vigour, particularly in crop years with unsuitable weather conditions.