STANDARD KARYOTYPE OF TRITICUM-SEARSII AND ITS RELATIONSHIP WITH OTHER S-GENOME SPECIES AND COMMON WHEAT

被引：37

作者：

FRIEBE, B ^{[1
]}

TULEEN, NA ^{[1
]}

GILL, BS ^{[1
]}

机构：

[1] TEXAS A&M UNIV,DEPT SOIL & CROP SCI,COLLEGE STN,TX 77843

来源：

THEORETICAL AND APPLIED GENETICS | 1995年 / 91卷 / 02期

关键词：

C-BANDING; TRITICIM SEARSII; S GENOME; SUBSTITUTION LINES; TRITICUM-AESTIVUM; B GENOME;

D O I：

10.1007/BF00220885

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

C-banding polymorphism was analyzed in 14 accessions of Triticum searsii from Israel, and a generalized idiogram of the species was established. One accession was homozygous for whole arm translocations T1S(s)S . 4S(s)S and T1S(s)L . 4S(s)L. C-banding analysis was also used to identify 7 T. aestivum cv 'Chinese Spring'-T. searsii disomic chromosome addition lines, 14 ditelosomic chromosome addition lines, 21 disomic whole chromosome, and 31 ditelosomic chromosome substitution lines. The identity of these lines was further confirmed by meiotic pairing analysis. Sporophytic and gametophytic compensation tests were used to determine the homoeologous relationships of the T. searsii chromosomes. The results show that the T. searsii chromosomes do not compensate well for their wheat homoeologues. The C-banding patterns of T. searsii chromosomes are distinct from those of other S-genome species and from the B-genome chromosomes of wheat, indicating that T. searsii is not a direct B-genome donor species of T. turgidum and T. aestivum.

引用

页码：248 / 254

页数：7

共 34 条

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