Investigating the Effect of the Interaction of Maize Inducer and Donor Backgrounds on Haploid Induction Rates
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TRENTIN, Henrique Uliana, BATÎRU, Grigorii, FREI, Ursula Karoline, DUTTA, Somak, LUBBERSTEDT, Thomas. Investigating the Effect of the Interaction of Maize Inducer and Donor Backgrounds on Haploid Induction Rates. In: Plants, 2022, nr. 12(11), pp. 1-10. ISSN 2223-7747. DOI: https://doi.org/10.3390/plants11121527
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Numărul 12(11) / 2022 / ISSN 2223-7747 /ISSNe 2223-7747

Investigating the Effect of the Interaction of Maize Inducer and Donor Backgrounds on Haploid Induction Rates

DOI:https://doi.org/10.3390/plants11121527

Pag. 1-10

Trentin Henrique Uliana1, Batîru Grigorii2, Frei Ursula Karoline3, Dutta Somak3, Lubberstedt Thomas3
 
1 Bayer Crop Science, RS, Coxilha,
2 State Agrarian University of Moldova ,
3 Iowa State University, Ames
 
 
Disponibil în IBN: 15 iunie 2022


Rezumat

Doubled haploid technology is a feasible, fast, and cost-efficient way of producing completely homozygous lines in maize. Many factors contribute to the success of this system including the haploid induction rate (HIR) of inducer lines, the inducibility of donor background, and environmental conditions. Sixteen inducer lines were tested on eight different genetic backgrounds of five categories in different environments for the HIR to determine possible interaction specificity. The HIR was assessed using the R1-nj phenotype and corrected using the red root marker or using a gold-standard test that uses plant traits. RWS and Mo-17-derived inducers showed higher average induction rates and the commercial dent hybrid background showed higher inducibility. In contrast, sweet corn and flint backgrounds had a relatively lower inducibility, while non-stiff stalk and stiff stalk backgrounds showed intermediate inducibility. For the poor-performing donors (sweet corn and flint), there was no difference in the HIR among the inducers. Anthocyanin inhibitor genes in such donors were assumed to have increased the misclassification rate in the F1 fraction and, hence, result in a lower HIR. 

Cuvinte-cheie
donor background, doubled haploids, haploid inducibility, haploid induction rate, haploid seeds, inducer background, Maize