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- Title
Reduced height genes and their importance in winter wheat cultivars grown in southern Russia.
- Authors
Divashuk, M.; Bespalova, L.; Vasilyev, A.; Fesenko, I.; Puzyrnaya, O.; Karlov, G.
- Abstract
Reduced height genes are the genetic basis of the 'green revolution'. Two agronomically important gibberellic acid (GA)-insensitive genes, Rht- B1b ( Rht1) and Rht- D1b ( Rht2), localised on chromosomes 4BS and 4DS, respectively, and the GA-responsive gene Rht8, localised on chromosome 2DS, were introduced into many cultivars worldwide. An alternative GA-insensitive gene Rht- B1e (= Rht11) was introduced into Russian wheat cultivars. In this study, we investigated the importance of Rht- B1b, Rht- B1e, Rht- D1b and Rht8 in south Russian bread wheat cultivars. The cultivars were divided into five groups: (1) Rht8c; (2) Rht- B1b; (3) Rht- B1b, Rht8; (4) Rht- B1e, Rht8; and (5) Rht- D1b, Rht8. In the Krasnodar region of south Russia 3,222,321 ha were evaluated for estimating the commercial value of each of these genes in 2009-2011. The results showed that coupling Rht- B1e with Rht8 or Rht- B1b with Rht8 was more successful compared with the effects of other genes or their combinations. The average yield of cultivars carrying Rht- B1e exceeded the average yield of cultivars from the other groups. Our study demonstrates that Rht- B1e can be recommended for use in breeding programs and the presence of a molecular marker for this allele simplifies its transfer to elite wheat germplasm.
- Subjects
SOUTHERN Russia; WINTER wheat; CULTIVARS; GIBBERELLIC acid; PLANT genes; WHEAT breeding; CROP genetics
- Publication
Euphytica, 2013, Vol 190, Issue 1, p137
- ISSN
0014-2336
- Publication type
Article
- DOI
10.1007/s10681-012-0789-7