Resistance of bread wheat (Triticum aestivum L.) to preharvest sprouting: An association analysis

Autor: S. P. Martynov, T. V. Dobrotvorskaya
Rok vydání: 2012
Předmět:
Zdroj: Russian Journal of Genetics. 48:975-984
ISSN: 1608-3369
1022-7954
DOI: 10.1134/s1022795412100055
Popis: A statistical analysis of the data about 1422 bread wheat accessions with estimated preharvest sprouting was carried out. Close associations of preharvest sprouting resistance with the grain color and with resistance to Fusarium head blight were revealed, as well as weak, but statistically significant, associations with the habit, awnedness, and reduced height genes Rht-B1 and Rht-D1 (insensitive to gibberellin GA3). The pedigree analysis showed that the cluster structures of the gene pools of the North American red-grained and white-grained varieties are practically identical. In both groups, varieties that are resistant to preharvest sprouting differ from susceptible ones in the percentage of the contributions of the Crimean and Mediterranean landraces. Resistance is associated with a high contribution by the Crimean landrace and susceptibility is associated with a high contribution by the Mediterranean landrace.
Databáze: OpenAIRE
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