Effects of Rht-B1b and Ddw1 Dwarfing Genes in Two Connecting Populations of Spring Triticale under Greenhouse Experiment Conditions

Anastasiya Chernook, Pavel Kroupin, Gennady Karlov, Alexander Soloviev, Anastasiya Korshunova, Valentina Rubets, Vladimir Igonin and Mikhail Divashuk
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Anastasiya Chernook: Laboratory of Applied Genomics and Crop Breeding, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya str. 42, Moscow 127550, Russia
Pavel Kroupin: Laboratory of Applied Genomics and Crop Breeding, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya str. 42, Moscow 127550, Russia
Gennady Karlov: Laboratory of Applied Genomics and Crop Breeding, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya str. 42, Moscow 127550, Russia
Alexander Soloviev: Laboratory of Marker-Assisted and Genomic Selection of Plants, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya str. 42, Moscow 127550, Russia
Anastasiya Korshunova: Department of Genetics, Biotechnology, Plant Breeding and Seed Science, Russian State Agrarian University–Moscow Timiryazev Agricultural Academy, Timiryazevskaya street, 49, Moscow 127550, Russia
Valentina Rubets: Department of Genetics, Biotechnology, Plant Breeding and Seed Science, Russian State Agrarian University–Moscow Timiryazev Agricultural Academy, Timiryazevskaya street, 49, Moscow 127550, Russia
Vladimir Igonin: Department of Genetics, Biotechnology, Plant Breeding and Seed Science, Russian State Agrarian University–Moscow Timiryazev Agricultural Academy, Timiryazevskaya street, 49, Moscow 127550, Russia
Mikhail Divashuk: Laboratory of Applied Genomics and Crop Breeding, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya str. 42, Moscow 127550, Russia

Agriculture, 2019, vol. 9, issue 6, 1-11

Abstract: Dwarfing genes not only reduce the height of triticale plants, but also have pleiotropic effects on important agronomic traits. An important task for breeding is to evaluate the effects of gibberellin responsive (GAR) and gibberellin-insensitive (GAI) dwarfing genes in one genotype. In the greenhouse experiment, we evaluated the effects of the GAI gene Rht-B1 b of wheat and the GAR gene Ddw1 of rye on height and the main agronomic traits in two connecting populations derived from crossing Ddw1 donors (cv. ‘Mudrets’ and cv. ‘Valentin 90’) with a Rht-B1 b donor (cv. ‘Dublet’). The results show a strong decrease in height under the influence of Ddw1 in both populations by more than 30%. In this case, Rht-B1 b in the presence of Ddw1 does not lead to a significant decrease in the height of the spring triticale; thus, this is not likely to be included in breeding programs in order to further reduce the height in the presence of Ddw1 in the spring triticale germplasm. However, Ddw1 reduces the 1000 grain weight, while Rht-B1 b increases the grain number per spike and grain number per spikelet. Thus, our studies have demonstrated the negative effect of Ddw1 on spring triticale productivity of the main spike in the greenhouse experiment, which can be partially compensated by Rht-B1 b .

Keywords: triticale; breeding; germplasm; dwarfing genes; agronomic traits; Ddw1; Rht-B1; wheat; rye; wide hybridization; PCR; fragment analysis (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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