|Table of Contents|

Karyological Analysis on Eight Gemplasm Resources in Genus Rosa L.

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年13
Page:
85-90
Research Field:
Publishing date:

Info

Title:
Karyological Analysis on Eight Gemplasm Resources in Genus Rosa L.
Author(s):
CAO Shirui1; 2; ZHANG Ting2; WANG Qigang2; QIU Xianqin2; MA Changle1; JIAN Hongying2
(1.School of Landscape Architecture and Horticulture Science,Southwest Forestry University,Kunming,Yunnan 650224;2.Flower Research Institute,Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulturae/Yunnan Key Laboratory for Flower Breeding,Kunming,Yunnan 650205)
Keywords:
Rosa L.; chromosome; ploidy; karyotype
PACS:
-
DOI:
10.11937/bfyy.20204689
Abstract:
The chromosome numbers and karyotypes of eight rose germplasm resources with special traits were studied by de-walling and hypotonic methods.In order to supply cytogenetic information to the utilization of these rose resources for the germplasm innovation and cultivar improvement of modern rose.The results showed that,1) the chromosome numbers of different resources were significantly different.Rosa lichiangensis with half-double petals,Rosa lucidissima,the prickless Rosa banksiae Ait.var.banksiae,Rosa sertata×Rosa rugosa and Rosa xanthina f.xanthina were all diploid (2n=2x=14);Rosa ‘Parks’ Yellow Tea-scented China’ was triploid (2n=3x=21);Rosa‘Dian Hong’ was tetraploid (2n=4x=28).Rosa caninawas pentaploid (2n=5x=35).2) The range of nuclear asymmetry coefficient of these eight resources was 59.1%-66.9%,none satellite was observed in the metaphase nuclei of theseresources.3) The karyotypes of the half-double Rosa lichiangensis,Rosa‘Parks’ Yellow Tea-scented China’,Rosa ‘Dian Hong’,Rosa caninawere all 2B.Those of the prickless Rosa banksiae var.banksiae,Rosa xanthina f.xanthina were both 2A.The karyotype of Rosa sertata×Rosa rugosawas 1A and that of Rosa lucidissimawas 3A.

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Last Update: 2021-10-11