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Production of aneuhaploid and euhaploid sporocytes by meiotic restitution in fertile hybrids between durum wheat Langdon chromosome substitution lines and Aegilops tauschii.
J Genet Genomics. 2008 Oct; 35(10):617-23.JG

Abstract

Fertile F(1) hybrids were obtained between durum wheat (Triticum durum Desf.) Langdon (LDN) and its 10 disomic substitution (LDN DS) lines with Aegilops tauschii accession AS60 without embryo rescue. Selfed seedset rates for hybrids of LDN with AS60 were 36.87% and 49.45% in 2005 and 2006, respectively. Similar or higher selfed seedset rates were observed in the hybrids of 1D (1A), 1D (1B), 3D (3A), 4D (4B), 7D (7A), and 2D (2B) with AS60, while lower in hybrids of 3D (3B) + 3BL, 5D (5A) + 5AL, 5D (5B) + 5B and 6D (6B) + 6BS with AS60 compared with the hybrids of LDN with AS60. Observation of male gametogenesis showed that meiotic restitution, both first-division restitution (FDR) and single-division meiosis (SDM) resulted in the formation of functional unreduced gametes, which in turn produced seeds. Both euhaploid and aneuhaploid gametes were produced in F(1) hybrids. This suggested a strategy to simultaneously transfer and locate major genes from the ancestral species T. turgidum or Ae. tauschii. Moreover, there was no significant difference in the aneuhaploid rates between the F(1) hybrids of LDN and LDN DS lines with AS60, suggesting that meiotic pairing between the two D chromosomes in the hybrids of LDN DS lines with AS60 did not promote the formation of aneuhaploid gametes.

Authors+Show Affiliations

Triticeae Research Institute, Sichuan Agricultural University, Dujiangyan 611830, China.No 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

18937918

Citation

Zhang, Lianquan, et al. "Production of Aneuhaploid and Euhaploid Sporocytes By Meiotic Restitution in Fertile Hybrids Between Durum Wheat Langdon Chromosome Substitution Lines and Aegilops Tauschii." Journal of Genetics and Genomics = Yi Chuan Xue Bao, vol. 35, no. 10, 2008, pp. 617-23.
Zhang L, Chen Q, Yuan Z, et al. Production of aneuhaploid and euhaploid sporocytes by meiotic restitution in fertile hybrids between durum wheat Langdon chromosome substitution lines and Aegilops tauschii. J Genet Genomics. 2008;35(10):617-23.
Zhang, L., Chen, Q., Yuan, Z., Xiang, Z., Zheng, Y., & Liu, D. (2008). Production of aneuhaploid and euhaploid sporocytes by meiotic restitution in fertile hybrids between durum wheat Langdon chromosome substitution lines and Aegilops tauschii. Journal of Genetics and Genomics = Yi Chuan Xue Bao, 35(10), 617-23. https://doi.org/10.1016/S1673-8527(08)60082-X
Zhang L, et al. Production of Aneuhaploid and Euhaploid Sporocytes By Meiotic Restitution in Fertile Hybrids Between Durum Wheat Langdon Chromosome Substitution Lines and Aegilops Tauschii. J Genet Genomics. 2008;35(10):617-23. PubMed PMID: 18937918.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Production of aneuhaploid and euhaploid sporocytes by meiotic restitution in fertile hybrids between durum wheat Langdon chromosome substitution lines and Aegilops tauschii. AU - Zhang,Lianquan, AU - Chen,Qijiao, AU - Yuan,Zhongwei, AU - Xiang,Zhiguo, AU - Zheng,Youliang, AU - Liu,Dengcai, PY - 2008/01/04/received PY - 2008/07/17/revised PY - 2008/07/18/accepted PY - 2008/10/22/pubmed PY - 2009/4/10/medline PY - 2008/10/22/entrez SP - 617 EP - 23 JF - Journal of genetics and genomics = Yi chuan xue bao JO - J Genet Genomics VL - 35 IS - 10 N2 - Fertile F(1) hybrids were obtained between durum wheat (Triticum durum Desf.) Langdon (LDN) and its 10 disomic substitution (LDN DS) lines with Aegilops tauschii accession AS60 without embryo rescue. Selfed seedset rates for hybrids of LDN with AS60 were 36.87% and 49.45% in 2005 and 2006, respectively. Similar or higher selfed seedset rates were observed in the hybrids of 1D (1A), 1D (1B), 3D (3A), 4D (4B), 7D (7A), and 2D (2B) with AS60, while lower in hybrids of 3D (3B) + 3BL, 5D (5A) + 5AL, 5D (5B) + 5B and 6D (6B) + 6BS with AS60 compared with the hybrids of LDN with AS60. Observation of male gametogenesis showed that meiotic restitution, both first-division restitution (FDR) and single-division meiosis (SDM) resulted in the formation of functional unreduced gametes, which in turn produced seeds. Both euhaploid and aneuhaploid gametes were produced in F(1) hybrids. This suggested a strategy to simultaneously transfer and locate major genes from the ancestral species T. turgidum or Ae. tauschii. Moreover, there was no significant difference in the aneuhaploid rates between the F(1) hybrids of LDN and LDN DS lines with AS60, suggesting that meiotic pairing between the two D chromosomes in the hybrids of LDN DS lines with AS60 did not promote the formation of aneuhaploid gametes. SN - 1673-8527 UR - https://www.unboundmedicine.com/medline/citation/18937918/Production_of_aneuhaploid_and_euhaploid_sporocytes_by_meiotic_restitution_in_fertile_hybrids_between_durum_wheat_Langdon_chromosome_substitution_lines_and_Aegilops_tauschii_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1673-8527(08)60082-X DB - PRIME DP - Unbound Medicine ER -