Heterozygosity analysis of spontaneous 2n female gametes and centromere mapping of the diploid Hevea brasiliensis based on full-sib triploid populations

© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..

KEY MESSAGE: Unreduced megagametophytes via second-division restitution were confirmed through heterozygosity analysis, and four candidate physical centromeres of rubber were located for the first time. The evaluation of maternal heterozygosity restitution (MHR) is vital in identifying the mechanism of 2n gametogenesis and assessing the utilization value of 2n gametes. In this study, three full-sib triploid populations were employed to evaluate the MHR of 2n female gametes of rubber tree clone GT1 and to confirm their genetic derivation. The 2n female gametes of GT1 were derived from second-division restitution (SDR) and transmitted more than half of the parental heterozygosity. In addition, low recombination frequency markers were developed, and four candidate physical centromeres of rubber tree were located for the first time. The confirmation that 2n female gametes of rubber tree clone GT1 are derived from SDR provides insights into the molecular mechanisms of 2n gametogenesis. In addition, the identified centromere location will aid in the development of centromeric markers for the rapid identification of the 2n gametogenesis mechanism.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:37

Enthalten in:

Plant reproduction - 37(2024), 1 vom: 01. März, Seite 47-56

Sprache:

Englisch

Beteiligte Personen:

Zhang, Yuan-Yuan [VerfasserIn]
Li, Hong-Kun [VerfasserIn]
Huang, Xiao [VerfasserIn]
Yuan, Yu-Jiao [VerfasserIn]
Zhang, Xiao-Fei [VerfasserIn]
Gao, Xin-Sheng [VerfasserIn]
Wang, Xiang-Jun [VerfasserIn]
Wei, Ming-Ming [VerfasserIn]
Huang, Hua-Sun [VerfasserIn]
Li, Weiguo [VerfasserIn]

Links:

Volltext

Themen:

2n female gamete
Centromere location
Full-sib population
Hevea brasiliensis
Journal Article
Research Support, Non-U.S. Gov't
SDR

Anmerkungen:

Date Completed 21.02.2024

Date Revised 07.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s00497-023-00481-8

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM362552045