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Production and identification of wheat-Agropyron cristatum 6P translocation lines.
Planta. 2010 Jul; 232(2):501-10.P

Abstract

The narrow genetic background of wheat is the primary factor that has restricted the improvement of crop yield in recent years. The kernel number per spike is the most important factor of the many potential characteristics that determine wheat yield. Agropyron cristatum (L.) Gaertn., a wild relative of wheat, has the characteristics of superior numbers of florets and kernels per spike, which are controlled by chromosome 6P. In this study, the wheat-A. cristatum disomic addition and substitution lines were used as bridge materials to produce wheat-A. cristatum 6P translocation lines induced by gametocidal chromosomes and irradiation. The results of genomic in situ hybridization showed that the frequency of translocation induced by gametocidal chromosomes was 5.08%, which was higher than the frequency of irradiated hybrids (2.78%) and irradiated pollen (2.12%). The fluorescence in situ hybridization results of the translocation lines showed that A. cristatum chromosome 6P could be translocated to wheat ABD genome, and the recombination frequency was A genome > B genome > D genome. The alien A. cristatum chromosome 6P was translocated to wheat homoeologous groups 1, 2, 3, 5 and 6. We obtained abundant translocation lines that possessed whole-arm, terminal, segmental and intercalary translocations. Three 6PS-specific and four 6PL-specific markers will be useful to rapidly identify and trace the translocated fragments. The different wheat-A. cristatum 6P translocation lines obtained in this study can provide basic materials for analyzing the alien genes carried by chromosome 6P. The translocation line WAT33-1-3 and introgression lines WAI37-2 and WAI41-1, which had significant characteristics of multikernel (high numbers of kernels per spike), could be utilized as novel germplasms for high-yield wheat breeding.

Authors+Show Affiliations

National Key Facility for Crop Gene Resources and Genetic Improvement (NKCRI), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20490543

Citation

Luan, Yang, et al. "Production and Identification of wheat-Agropyron Cristatum 6P Translocation Lines." Planta, vol. 232, no. 2, 2010, pp. 501-10.
Luan Y, Wang X, Liu W, et al. Production and identification of wheat-Agropyron cristatum 6P translocation lines. Planta. 2010;232(2):501-10.
Luan, Y., Wang, X., Liu, W., Li, C., Zhang, J., Gao, A., Wang, Y., Yang, X., & Li, L. (2010). Production and identification of wheat-Agropyron cristatum 6P translocation lines. Planta, 232(2), 501-10. https://doi.org/10.1007/s00425-010-1187-9
Luan Y, et al. Production and Identification of wheat-Agropyron Cristatum 6P Translocation Lines. Planta. 2010;232(2):501-10. PubMed PMID: 20490543.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Production and identification of wheat-Agropyron cristatum 6P translocation lines. AU - Luan,Yang, AU - Wang,Xiaoguang, AU - Liu,Weihua, AU - Li,Chunye, AU - Zhang,Jinpeng, AU - Gao,Ainong, AU - Wang,Yandong, AU - Yang,Xinming, AU - Li,Lihui, Y1 - 2010/05/19/ PY - 2010/03/14/received PY - 2010/04/27/accepted PY - 2010/5/22/entrez PY - 2010/5/22/pubmed PY - 2010/9/10/medline SP - 501 EP - 10 JF - Planta JO - Planta VL - 232 IS - 2 N2 - The narrow genetic background of wheat is the primary factor that has restricted the improvement of crop yield in recent years. The kernel number per spike is the most important factor of the many potential characteristics that determine wheat yield. Agropyron cristatum (L.) Gaertn., a wild relative of wheat, has the characteristics of superior numbers of florets and kernels per spike, which are controlled by chromosome 6P. In this study, the wheat-A. cristatum disomic addition and substitution lines were used as bridge materials to produce wheat-A. cristatum 6P translocation lines induced by gametocidal chromosomes and irradiation. The results of genomic in situ hybridization showed that the frequency of translocation induced by gametocidal chromosomes was 5.08%, which was higher than the frequency of irradiated hybrids (2.78%) and irradiated pollen (2.12%). The fluorescence in situ hybridization results of the translocation lines showed that A. cristatum chromosome 6P could be translocated to wheat ABD genome, and the recombination frequency was A genome > B genome > D genome. The alien A. cristatum chromosome 6P was translocated to wheat homoeologous groups 1, 2, 3, 5 and 6. We obtained abundant translocation lines that possessed whole-arm, terminal, segmental and intercalary translocations. Three 6PS-specific and four 6PL-specific markers will be useful to rapidly identify and trace the translocated fragments. The different wheat-A. cristatum 6P translocation lines obtained in this study can provide basic materials for analyzing the alien genes carried by chromosome 6P. The translocation line WAT33-1-3 and introgression lines WAI37-2 and WAI41-1, which had significant characteristics of multikernel (high numbers of kernels per spike), could be utilized as novel germplasms for high-yield wheat breeding. SN - 1432-2048 UR - https://www.unboundmedicine.com/medline/citation/20490543/Production_and_identification_of_wheat_Agropyron_cristatum_6P_translocation_lines_ L2 - https://dx.doi.org/10.1007/s00425-010-1187-9 DB - PRIME DP - Unbound Medicine ER -