000 03750nab a22004577a 4500
001 G96066
003 MX-TxCIM
005 20240919021001.0
008 211020s2012 gw |||p|op||| 00| 0 eng d
022 _a1432-2242 (Online)
022 0 _a0040-5752
024 8 _ahttps://doi.org/10.1007/s00122-012-1786-x
040 _aMX-TxCIM
041 _aeng
090 _aCIS-6620
100 1 _91843
_aRosewarne, G.M.
_gGlobal Wheat Program
_8INT3219
245 1 0 _aAnalysis of leaf and stripe rust severities reveals pathotype changes and multiple minor QTLs associated with resistance in an Avocet × Pastor wheat population
260 _aBerlin (Germany) :
_bSpringer,
_c2012.
500 _aPeer review
500 _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0040-5752
520 _aLeaf rust and stripe rust are important diseases of wheat world-wide and deployment of cultivars with genetic resistance is an effective and environmentally sound control method. The use of minor, additive genes conferring adult plant resistance (APR) has been shown to provide resistance that is durable. The wheat cultivar ‘Pastor’ originated from the CIMMYT breeding program that focuses on minor gene-based APR to both diseases by selecting and advancing generations alternately under leaf rust and stripe rust pressures. As a consequence, Pastor has good resistance to both rusts and was used as the resistant parent to develop a mapping population by crossing with the susceptible ‘Avocet’. All 148 F5 recombinant inbred lines were evaluated under artificially inoculated epidemic environments for leaf rust (3 environments) and stripe rust (4 environments, 2 of which represent two evaluation dates in final year due to the late build-up of a new race virulent to Yr31) in Mexico. Map construction and QTL analysis were completed with 223 polymorphic markers on 84 randomly selected lines in the population. Pastor contributed Yr31, a moderately effective race-specific gene for stripe rust resistance, which was overcome during this study, and this was clearly shown in the statistical analysis. Linked or pleiotropic chromosomal regions contributing to resistance against both pathogens included Lr46/Yr29 on 1BL, the Yr31 region on 2BS, and additional minor genes on 5A, 6B and 7BL. Other minor genes for leaf rust resistance were located on 1B, 2A and 2D and for stripe rust on 1AL, 1B, 3A, 3B, 4D, 6A, 7AS and 7AL. The 1AL, 1BS and 7AL QTLs are in regions that were not identified previously as having QTLs for stripe rust resistance. The development of uniform and severe epidemics facilitated excellent phenotyping, and when combined with multi-environment analysis, resulted in the relatively large number of QTLs identified in this study.
536 _aGlobal Wheat Program
546 _aText in English
591 _aCIMMYT Informa No. 1781|Springer
594 _aINT2833|INT3219|INT0610
595 _aCSC
650 7 _2AGROVOC
_91310
_aWheat
650 7 _2AGROVOC
_91251
_aRusts
650 7 _2AGROVOC
_91853
_aQuantitative Trait Loci
650 7 _2AGROVOC
_91077
_aDisease resistance
650 7 _2AGROVOC
_93155
_aResistance varieties
700 1 _aSingh, R.P.
_gGlobal Wheat Program
_8INT0610
_9825
700 1 _aHuerta-Espino, J.
_gGlobal Wheat Program
_8CHUE01
_9397
700 1 _aHerrera-Foessel, S.
_92073
700 1 _aForrest, K.L.
_94682
700 1 _aHayden, M.
_91679
700 1 _9667
_aRebetzke, G.J.
773 0 _tTheoretical and Applied Genetics
_gv. 124, no. 7, p. 1283-1294
_x0040-5752
_dBerlin (Germany) : Springer, 2012.
_wG444762
856 4 _uhttps://hdl.handle.net/20.500.12665/1505
_yAccess only for CIMMYT Staff
942 _cJA
_2ddc
_n0
999 _c28879
_d28879