Abstract：
:A wheat (Triticum aestivum L. emend Thell) disomic addition line (2n = 6x = 44), SH1-152-2, with a pair of Elytrigia pontica (Podp.) Holub 2n = 10x = 70 [syn. Agropyron elongatum (Host) P.B.] chromosomes controlling blue aleurone color was crossed with a short-statured spring wheat ;Sonora 64' (T. aestivum). Isoline pairs of blue-disomic addition lines and nonblue euploid lines were produced by selecting plants segregating for blue aleurone for 12 generations. Nineteen of 20 blue aleurone lines were 2n = 44 addition lines, and one had 2n = 42 chromosomes. Several lines of evidence showed that this line had a spontaneous translocation in which the beta arm of wheat chromosome 4A was replaced by an Elytrigia chromosome arm carrying the blue aleurone gene. The Elytrigia chromosome in SH1-152-2 appeared to be homologous with E. pontica chromosome 4el(1), which also carries the blue aleurone gene. It was concluded that the spontaneous translocation originated from simultaneous misdivision of univalents and subsequent reunion at the centromere of chromosome arm 4Aalpha with the Elytrigia chromosome arm.
journal_name
Geneticsjournal_title
Geneticsauthors
Jan CC,Dvorák J,Qualset CO,Soliman KMsubject
Has Abstractpub_date
1981-06-01 00:00:00pages
389-98issue
2eissn
0016-6731issn
1943-2631journal_volume
98pub_type
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