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Agronomy
Volume 16
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10.3390/agronomy16030336
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Article

Development and Characterization of Novel St-R Translocation Triticale from a Trigeneric Hybrid

by
Changtong Jiang
1,†,
Miao He
1,2,†,
Xinyu Yan
1,
Qianyu Xing
1,
Yunfeng Qu
2,
Haibin Zhao
3,
Hui Jin
3,
Rui Zhang
3,
Ruonan Du
3,
Deyu Kong
1,
Kaidi Yang
1,
Anning Song
1,
Xinling Li
1,
Hongjie Li
2,
Lei Cui
4,* and
Yanming Zhang
1,*
1
Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
2
Xianghu Laboratory, Institute of Biotechnology, Hangzhou 311231, China
3
Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
4
College of Agriculture, Shanxi Agricultural University, Taiyuan 030031, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Agronomy 2026, 16(3), 336; https://doi.org/10.3390/agronomy16030336
Submission received: 24 December 2025 / Revised: 20 January 2026 / Accepted: 27 January 2026 / Published: 29 January 2026
(This article belongs to the Topic Plant Breeding, Genetics and Genomics, 2nd Edition)
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Abstract

Triticale (×Triticosecale Wittmack), a synthetic hybrid of wheat (Triticum spp.) and rye (Secale cereale), is a valuable dual-purpose crop for its high yield and stress tolerance. Introducing beneficial alien chromatin is crucial for expanding genetic diversity and improving cultivars. This study aimed to introduce Thinopyrum intermedium St genome chromatin into hexaploid triticale via trigeneric hybridization to develop novel germplasm. Six stable lines were selected from crosses between an octoploid wheat-Th. intermedium partial amphiploid line Maicao 8 and a hexaploid triticale cultivar Hashi 209. Agronomic traits were evaluated over two cropping seasons, revealing that the translocation lines exhibited superior agronomic performance compared to the parental triticales. These lines showed longer spikes, higher tiller numbers, and increased grain protein content, without compromising thousand-kernel weight. Cytogenetic analysis using sequential multicolor genomic in situ hybridization (smGISH), fluorescence in situ hybridization (FISH), and oligonucleotide probes, alongside validation with species-specific molecular markers, identified all six lines as St-R terminal translocation lines containing 14 rye chromosomes. Three lines carried a small terminal St segment on chromosome 1R, while the other three carried St segments on both 1RL and 4RS chromosomes. This work demonstrates that trigeneric hybridization is an effective strategy for inducing intergeneric recombination between Thinopyrum intermedium and rye chromosomes, leading to stable, small-segment terminal translocations. The developed St-R translocation lines represent a novel and valuable germplasm resource for enriching genetic diversity and breeding improved triticale cultivars with enhanced yield and quality traits.
Keywords: Triticosecale Wittmack; Thinopyrum intermedium; trigeneric hybridization; in situ hybridization; simple sequence repeat marker Triticosecale Wittmack; Thinopyrum intermedium; trigeneric hybridization; in situ hybridization; simple sequence repeat marker

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MDPI and ACS Style

Jiang, C.; He, M.; Yan, X.; Xing, Q.; Qu, Y.; Zhao, H.; Jin, H.; Zhang, R.; Du, R.; Kong, D.; et al. Development and Characterization of Novel St-R Translocation Triticale from a Trigeneric Hybrid. Agronomy 2026, 16, 336. https://doi.org/10.3390/agronomy16030336

AMA Style

Jiang C, He M, Yan X, Xing Q, Qu Y, Zhao H, Jin H, Zhang R, Du R, Kong D, et al. Development and Characterization of Novel St-R Translocation Triticale from a Trigeneric Hybrid. Agronomy. 2026; 16(3):336. https://doi.org/10.3390/agronomy16030336

Chicago/Turabian Style

Jiang, Changtong, Miao He, Xinyu Yan, Qianyu Xing, Yunfeng Qu, Haibin Zhao, Hui Jin, Rui Zhang, Ruonan Du, Deyu Kong, and et al. 2026. "Development and Characterization of Novel St-R Translocation Triticale from a Trigeneric Hybrid" Agronomy 16, no. 3: 336. https://doi.org/10.3390/agronomy16030336

APA Style

Jiang, C., He, M., Yan, X., Xing, Q., Qu, Y., Zhao, H., Jin, H., Zhang, R., Du, R., Kong, D., Yang, K., Song, A., Li, X., Li, H., Cui, L., & Zhang, Y. (2026). Development and Characterization of Novel St-R Translocation Triticale from a Trigeneric Hybrid. Agronomy, 16(3), 336. https://doi.org/10.3390/agronomy16030336

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