000 02938nab a22004217a 4500
999 _c12613
_d12613
001 G39754
003 MX-TxCIM
005 20211006082107.0
008 210831s1992 xxu|||p|op||| 00| 0 eng d
022 _a1435-0653 (Online)
022 _a0011-183X
024 8 _ahttps://doi.org/10.2135/cropsci1992.0011183X003200040008x
040 _aMX-TxCIM
041 0 _aeng
043 _aUS
072 0 _aF01
072 0 _aH20
090 _aCIS-1737
100 1 _aSingh, R.P.
_gGlobal Wheat Program
_8INT0610
_9825
245 1 0 _aAssociation between gene Lr34 for leaf rust resistance and leaf tip necrosis in wheat
260 _aUSA :
_bCSSA :
_bWiley,
_c1992.
340 _aPrinted Computer File
500 _aPeer review
500 _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0011-183X
520 _aDurable resistance to leaf rust (Puceinia recondita Roberge ex Desmaz. f. sp. tritici) in bread wheat (Triticum oestivurn L.) cultivars is known to result from the interaction of Lr34 with other minor additive genes that are effective in the adult growth state. The Lr34 gene seems to be present in several CIMMYT germplasm-derived Mexican cultivars that display temperature- and light-sensitive seedling responses similar to those displayed by near-isogenic ‘Thatcher’ lines that contain Lr34. Adult plants of these two Thatcher lines and all Mexican cultivars postulated to carry Lr34 display resistance to leaf rust and exhibit leaf tip necrosis symptoms. This study was conducted to determine whether 15-34 and a gene or genes for leaf tip necrosis am linked. The simultaneous presence of Lr34 and leaf tip necrosis in the two Thatcher near-isogenic lines and Mexican cultivars was confirmed by evaluating F2 plants or F3 lines obtained from various intercrosses. Lr34 and leaf tip necrosis were inherited together in a population of 117 F3 lines obtained from the cross of leaf rust resistant ‘Jupateco 73R’ (carrying Lr34 and leaf tip necrosis) with its susceptible counterpart ‘Jupateco 73s’. Linkage or pleiotropism was also evident in the crosses of six Lr34-carrying Mexican cultivars with ‘Siete Cerros 66’ (which does not have Lr34). The gene for leaf tip necrosis, designated Lln, could be used as a marker for Lr34.
536 _aGlobal Wheat Program
546 _aText in English
591 _aR92ANALY|Crop Science Society of America (CSSA)|WP|12536-R|3
594 _aINT0610
650 1 7 _aDisease resistance
_gAGROVOC
_2
_91077
650 1 0 _aPlant disease manifestations
_91205
650 1 0 _aPuccinia
650 1 7 _aRusts
_gAGROVOC
_2
_91251
650 1 0 _91296
_aTriticum aestivum
_2AGROVOC
773 0 _tCrop Science
_n620678, 625459
_gv. 32, no. 4, p. 874-878
_dUSA : CSSA : Wiley, 1992.
_wG444244
_x1435-0653
856 4 _yAccess only for CIMMYT Staff
_uhttps://hdl.handle.net/20.500.12665/1730
942 _cJA
_2ddc
_n0