DISOMIC THINOPYRUM-INTERMEDIUM ADDITION LINES IN WHEAT WITH BARLEY YELLOW DWARF VIRUS-RESISTANCE AND WITH RUST RESISTANCES
DISOMIC THINOPYRUM-INTERMEDIUM ADDITION LINES IN WHEAT WITH BARLEY YELLOW DWARF VIRUS-RESISTANCE AND WITH RUST RESISTANCES
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DOI：
10.1139/g95-050
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发表时间：
1995-04-01
期刊：
影响因子：
3.1
通讯作者：
MCINTOSH, RA
中科院分区：
文献类型：
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作者：
LARKIN, PJ;BANKS, PM;MCINTOSH, RA
钟5号是介于普通小麦（Triticum aestivum）（2n = 42）和中间堇草（Thinopyrum intermedium）（2n = 42）之间的部分双倍体（2n = 56），携带小麦的全部染色体和Th的7对染色体。中间。进一步与小麦回交后，获得了 6 个独立的稳定 2n = 44 系，代表 4 个二体染色体附加系。一条染色体赋予大麦黄矮病毒（BYDV）抗性，而另外两条染色体则具有叶和茎锈病抗性；后者之一还具有抗条锈性。使用RFLP和同工酶标记，我们已经表明，Zhong 5衍生的BYDV抗性二体附加系（Z1、Z2或Z6）中的额外染色体属于同源组2。因此，它携带与先前描述的BYDV抗性7组附加系L1不同的基因座。叶、茎和条锈病抗性品系 (Z4) 携带附加的 7 组染色体。 Z3 系既没有 BYDV，也没有防锈性，不是第 2 组或第 7 组添加物，可能是第 1 组添加物。 Z5品系抗叶锈病和茎锈病，但不抗条锈病，其同源性仍未知。
Zhong 5 is a partial amphiploid (2n = 56) between Triticum aestivum (2n = 42) and Thinopyrum intermedium (2n = 42) carrying all the chromosomes of wheat and seven pairs of chromosomes from Th. intermedium. Following further backcrossing to wheat, six independent stable 2n = 44 lines were obtained representing 4 disomic chromosome addition lines. One chromosome confers barley yellow dwarf virus (BYDV) resistance, whereas two other chromosomes carry leaf and stem rust resistance; one of the latter also confers stripe rust resistance. Using RFLP and isozyme markers we have shown that the extra chromosome in the Zhong 5-derived BYDV resistant disomic addition lines (Z1, Z2, or Z6) belongs to the homoeologous group 2. It therefore carries a different locus to the BYDV resistant group 7 addition, L1, described previously. The leaf, stem, and stripe rust resistant line (Z4) carries an added group 7 chromosome. The line Z3 has neither BYDV nor rust resistance, is not a group 2 or group 7 addition, and is probably a group 1 addition. The line Z5 is leaf and stem rust resistant, is not stripe rust resistant, and its homoeology remains unknown.