Cytogenetic and Genome Research

Luo Y.-C.a· Chen C.a· Wu D.-D.a,b· Lu J.-L.c· Sha L.-N.b,c· Fan X.a,b· Cheng Y.-R.b· Kang H.-Y.a,b· Wang Y.a,b· Zhou Y.-H.a,b· Zhang C.-B.d· Zhang H.-Q.b,c

Author affiliations

aTriticeae Research Institute, Sichuan Agricultural University, Chengdu, China
bState Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, China
cCollege of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
dSichuan Academy of Grassland Science, Chengdu, China

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Article / Publication Details

First-Page Preview

Received: May 15, 2022
Accepted: October 24, 2022
Published online: February 01, 2023

Number of Print Pages: 11
Number of Figures: 6
Number of Tables: 1

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: https://www.karger.com/CGR

Abstract

Natural hybridization has been frequently observed in Triticeae; however, few studies have investigated the origin of natural intergeneric Triticeae hybrids. In the present study, we discovered three putative hybrid Triticeae plants in the Western Sichuan Plateau of China. Morphologically, the putative hybrids were intermediate between Kengyilia melanthera (2n = 6x = 42; StStYYPP) and Campeiostachys dahurica var. tangutorum (2n = 6x = 42; StStYYHH) with greater plant height and tiller number. Cytological analyses demonstrated that the hybrids were hexaploid with 42 chromosomes (2n = 6x = 42). At metaphase I, 12.10–12.58 bivalents and 13.81–14.18 univalents per cell were observed in the hybrid plants. Genomic in situ hybridization demonstrated that the hybrids had StStYYHP genomes. Phylogenetic analysis of Acc1 sequences indicated that the hybrids were closely related to K. melanthera and C. dahurica var. tangutorum. Our morphological, cytological, and molecular analyses indicate that these hexaploid natural hybrid plants may be hybrids of K. melanthera and C. dahurica var. tangutorum.

© 2023 S. Karger AG, Basel

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First-Page Preview

Received: May 15, 2022
Accepted: October 24, 2022
Published online: February 01, 2023

Number of Print Pages: 11
Number of Figures: 6
Number of Tables: 1

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: https://www.karger.com/CGR

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