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Molecular cytogenetic characterization and stripe rust response of a trigeneric hybrid involving Triticum, Psathyrostachys, and Thinopyrum.
Genome. 2012 May; 55(5):383-90.G

Abstract

Trigeneric hybrids offer opportunities to transfer alien traits into cultivated wheat. In this study, a new trigeneric hybrid involving species of Triticum, Psathyrostachys, and Thinopyrum was synthesized by crossing Triticum aestivum L. (wheat)--Thinopyrum intermedium (Host) Barkworth & D.R. Dewey amphiploid Zhong 3 with wheat--Psathyrostachys huashanica Keng ex Kuo amphiploid PHW-SA. Crossability of the two amphiploids was 19.74%, and the fertility of the hybrid was 16.20%. The mean meiotic configuration of the trigeneric hybrid (2n=56) was 13.06 I+17.24 IIring+3.73 IIrod+0.28 III+0.04 IV. GISH analysis indicated that the trigeneric F1 had seven P. huashanica chromosomes and seven Th. intermedium chromosomes. The mean chromosome numbers of F2, F3, and F4 progenies were 2n=49.24, 2n=48.13, and 2n=46.78, respectively, a gradual decrease. GISH analysis revealed that most F2 and F3 plants had 2–10 Th. intermedium chromosomes and 0–4 P. huashanica chromosomes. In the F4 progenies, 1–7 Th. intermedium chromosomes were labeled, but no P. huashanica chromosomes were detected. It seems that Th. intermedium chromosomes are more likely than P. huashanica chromosomes to be transmitted to the progenies. The stripe rust response of PHW-SA was expressed in the F1 and some F2 and F3 progenies. The trigeneric hybrid could be a useful bridge for transfering P. huashanica and Th. intermedium chromosomes to common wheat.

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Authors+Show Affiliations

Kang H
Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Chengdu, Sichuan, China.
Zeng J
No affiliation info available
Xie Q
No affiliation info available
Tao S
No affiliation info available
Zhong M
No affiliation info available
Zhang H
No affiliation info available
Fan X
No affiliation info available
Sha L
No affiliation info available
Xu L
No affiliation info available
Zhou Y
No affiliation info available

MeSH

ChimeraChromosomes, PlantHybridization, GeneticIn Situ HybridizationKaryotypePoaceaeTriticum

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22563730

Citation

Kang, Houyang, et al. "Molecular Cytogenetic Characterization and Stripe Rust Response of a Trigeneric Hybrid Involving Triticum, Psathyrostachys, and Thinopyrum." Genome, vol. 55, no. 5, 2012, pp. 383-90.
Kang H, Zeng J, Xie Q, et al. Molecular cytogenetic characterization and stripe rust response of a trigeneric hybrid involving Triticum, Psathyrostachys, and Thinopyrum. Genome. 2012;55(5):383-90.
Kang, H., Zeng, J., Xie, Q., Tao, S., Zhong, M., Zhang, H., Fan, X., Sha, L., Xu, L., & Zhou, Y. (2012). Molecular cytogenetic characterization and stripe rust response of a trigeneric hybrid involving Triticum, Psathyrostachys, and Thinopyrum. Genome, 55(5), 383-90. https://doi.org/10.1139/g2012-025
Kang H, et al. Molecular Cytogenetic Characterization and Stripe Rust Response of a Trigeneric Hybrid Involving Triticum, Psathyrostachys, and Thinopyrum. Genome. 2012;55(5):383-90. PubMed PMID: 22563730.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molecular cytogenetic characterization and stripe rust response of a trigeneric hybrid involving Triticum, Psathyrostachys, and Thinopyrum. AU - Kang,Houyang, AU - Zeng,Jian, AU - Xie,Quan, AU - Tao,Shan, AU - Zhong,Meiyu, AU - Zhang,Haiqin, AU - Fan,Xing, AU - Sha,Lina, AU - Xu,Lili, AU - Zhou,Yonghong, PY - 2012/5/9/entrez PY - 2012/5/9/pubmed PY - 2012/9/7/medline SP - 383 EP - 90 JF - Genome JO - Genome VL - 55 IS - 5 N2 - Trigeneric hybrids offer opportunities to transfer alien traits into cultivated wheat. In this study, a new trigeneric hybrid involving species of Triticum, Psathyrostachys, and Thinopyrum was synthesized by crossing Triticum aestivum L. (wheat)--Thinopyrum intermedium (Host) Barkworth & D.R. Dewey amphiploid Zhong 3 with wheat--Psathyrostachys huashanica Keng ex Kuo amphiploid PHW-SA. Crossability of the two amphiploids was 19.74%, and the fertility of the hybrid was 16.20%. The mean meiotic configuration of the trigeneric hybrid (2n=56) was 13.06 I+17.24 IIring+3.73 IIrod+0.28 III+0.04 IV. GISH analysis indicated that the trigeneric F1 had seven P. huashanica chromosomes and seven Th. intermedium chromosomes. The mean chromosome numbers of F2, F3, and F4 progenies were 2n=49.24, 2n=48.13, and 2n=46.78, respectively, a gradual decrease. GISH analysis revealed that most F2 and F3 plants had 2–10 Th. intermedium chromosomes and 0–4 P. huashanica chromosomes. In the F4 progenies, 1–7 Th. intermedium chromosomes were labeled, but no P. huashanica chromosomes were detected. It seems that Th. intermedium chromosomes are more likely than P. huashanica chromosomes to be transmitted to the progenies. The stripe rust response of PHW-SA was expressed in the F1 and some F2 and F3 progenies. The trigeneric hybrid could be a useful bridge for transfering P. huashanica and Th. intermedium chromosomes to common wheat. SN - 1480-3321 UR - https://www.unboundmedicine.com/medline/citation/22563730/Molecular_cytogenetic_characterization_and_stripe_rust_response_of_a_trigeneric_hybrid_involving_Triticum_Psathyrostachys_and_Thinopyrum_ L2 - https://cdnsciencepub.com/doi/10.1139/g2012-025?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -