Genetic effects of dwarfing gene Rht-5 on agronomic traits in common wheat (Triticum aestivum L.) and QTL analysis on its linked traits

Daoura, Bachir Goudia; Chen, Liang; Du, Yingying; Hu, Yin‐Gang

doi:10.1016/j.fcr.2013.10.007

Cited by 45 publications

(36 citation statements)

References 31 publications

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“…Kalih et al (2015) [31] and Wolski et al (1996) [23] also wrote that Ddw1 leads to later periods of flowering and heading in triticale. Later flowering and heading may be the result of a smaller grain weight, as is the case, for example, for the GAR gibberellin-responsive Rht-5 wheat gene [32][33][34].…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2019

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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-B1b 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-B1b 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-B1b 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-B1b 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-B1b.

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Section: Discussionmentioning

confidence: 99%

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

et al. 2019

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“…It was therefore necessary to combine the use of fertilizers with breeding of short-culm cultivars, which are less prone to lodging due to their compact and sturdy culms (Hedden, 2003). Thus far, only a few genes have been explored in short-culm cultivars, such as Reduced height1 (Rht1), Rht2, and Rht8 in wheat (Daoura et al, 2014), semidwarf1 (sd1) in rice (Nagano et al, 2005), and sdw1/denso in barley (Hellewell et al, 2000). The known Rht gene products belong to the DELLA subgroup of the GRAS protein family, which are thought to function as transcriptional regulators and interfere with the signal transduction pathway of the gibberellin growth hormone (Pysh et al, 1999).…”

Section: Discussion the Group Of Brassinosteroid-deficient Barleymentioning

confidence: 99%

Induced Variations in Brassinosteroid Genes Define Barley Height and Sturdiness, and Expand the Green Revolution Genetic Toolkit

et al. 2014

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Reduced plant height and culm robustness are quantitative characteristics important for assuring cereal crop yield and quality under adverse weather conditions. A very limited number of short-culm mutant alleles were introduced into commercial crop cultivars during the Green Revolution. We identified phenotypic traits, including sturdy culm, specific for deficiencies in brassinosteroid biosynthesis and signaling in semidwarf mutants of barley (Hordeum vulgare). This set of characteristic traits was explored to perform a phenotypic screen of near-isogenic short-culm mutant lines from the brachytic, breviaristatum, dense spike, erectoides, semibrachytic, semidwarf, and slender dwarf mutant groups. In silico mapping of brassinosteroid-related genes in the barley genome in combination with sequencing of barley mutant lines assigned more than 20 historic mutants to three brassinosteroid-biosynthesis genes (BRASSINOSTEROID-6-OXIDASE, CONSTITUTIVE PHOTOMORPHOGENIC DWARF, and DIMINUTO) and one brassinosteroid-signaling gene (BRASSINOSTEROID -INSENSITIVE1 [HvBRI1]). Analyses of F2 and M2 populations, allelic crosses, and modeling of nonsynonymous amino acid exchanges in protein crystal structures gave a further understanding of the control of barley plant architecture and sturdiness by brassinosteroidrelated genes. Alternatives to the widely used but highly temperature-sensitive uzu1.a allele of HvBRI1 represent potential genetic building blocks for breeding strategies with sturdy and climate-tolerant barley cultivars.

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“…In addition to Rht8, studies on GAR dwarfing genes have mainly focused on Rht4, Rht5, Rht12 and Rht13 (Rebetzke et al, 2011(Rebetzke et al, , 2012Chen et al, 2013;Daoura et al, 2014;Wang et al, 2014). There has been very little research related to the Rht18 dwarfing gene, which was identified following fast-neutron induced mutation of the durum (tetraploid) wheat Anhinga and made public as the Rht18-dwarf cultivar Icaro (Konzak, 1987(Konzak, , 1988.…”

Section: Introductionmentioning

confidence: 97%

Effects of the GA-responsive dwarfing gene Rht18 from tetraploid wheat on agronomic traits of common wheat

Yang

Zheng

Liu

et al. 2015

Field Crops Research

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Genetic effects of dwarfing gene Rht-5 on agronomic traits in common wheat (Triticum aestivum L.) and QTL analysis on its linked traits

Cited by 45 publications

References 31 publications

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

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

Induced Variations in Brassinosteroid Genes Define Barley Height and Sturdiness, and Expand the Green Revolution Genetic Toolkit

Effects of the GA-responsive dwarfing gene Rht18 from tetraploid wheat on agronomic traits of common wheat

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