LEAF RUST-RESISTANCE GENES LR41, LR42, AND LR43 TRANSFERRED FROM TRITICUM-TAUSCHII TO COMMON WHEAT
LEAF RUST-RESISTANCE GENES LR41, LR42, AND LR43 TRANSFERRED FROM TRITICUM-TAUSCHII TO COMMON WHEAT
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DOI：
10.2135/cropsci1994.0011183x003400020005x
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发表时间：
1994-03-01
期刊：
影响因子：
2.3
通讯作者：
GILL, BS
中科院分区：
文献类型：
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作者：
COX, TS;RAUPP, WJ;GILL, BS
为了丰富硬红冬小麦（Triticum aestivum L.）叶锈病（由叶锈菌（Puccinia recondita Rob.）ex Desm.），从二倍体山羊草T. tauschii（Coss.）傻帽到六倍体小麦品系。其中一个衍生系KS 90 WGRC 10在接种23个隐匿青霉培养物时具有非常低的感染型。其他菌株KS 91 WGRC 11、KS 92 WGRC 16、U1865和U1866在三种培养物中具有低至中等感染类型。它们的感染类型与携带先前转移的Lr 21等位基因的品系的感染类型相似。WGRC 10在染色体ID上携带完全显性基因Lr 41，该基因独立于任何其它T.来自节节麦的叶锈病抗性基因。WGRC 11携带部分显性基因，Lr 42，也在一维上，与Lr 21连锁，重组值为0.286 +/- 0.023。WGRC 16携带一个部分显性基因Lr 43，该基因独立于所有已知的小麦苗期抗性基因。tauschii;其染色体位置是未知的。U1865和U1866携带的基因与Lr 21等位。WGRC 10、WGRC 11和WGRC 16已被小麦遗传资源中心作为胚种释放。
In order to diversify the genetic base of resistance in hard red winter wheat (Triticum aestivum L.) to leaf rust (caused by Puccinia recondita Rob. ex Desm.), five genes for resistance were transferred from the diploid goatgrass T. tauschii (Coss.) Schmal. to hexaploid wheat lines. One of the derived lines, KS90WGRC10, had a very low infection type when inoculated with 23 cultures of P. recondita. The others, KS91WGRC11, KS92WGRC16, U1865, and U1866, had low to intermediate infection types with three cultures. Their infection types varied similarly to those of lines carrying previously transferred alleles of Lr21. WGRC10 carries a completely dominant gene, Lr41, on chromosome ID that segregates independently of any other T. tauschii-derived leaf rust-resistance genes. WGRC11 carries the partially dominant gene, Lr42, also on 1D, that is linked to Lr21 with a recombination value of 0.286 +/- 0.023. WGRC16 carries a partially dominant gene, Lr43, that segregates independently of all known genes for seedling resistance from T. tauschii; its chromosome location is not known. The genes carried by U1865 and U1866 are allelic to Lr21. WGRC10, WGRC11, and WGRC16 have been released as germplasms by the Wheat Genetics Resource Center.