Natural incidence of black point (Alternaria sp.) in a group of elite advanced bread wheat (Triticum aestivum) lines

One hundred and sixty eight elite advanced bread wheat lines were evaluated for resistance to black point during the crop season 2014-2015 at Norman E. Borlaug Experimental Station in Yaqui Valley, Mexico. Sowing dates November 19 28, December 8, 2014. Harvest threshing done manually ten spikes per line, evaluation by visual inspection, counting healthy infected grains calculate percentage of infection. The range infection first sowing date was 0 34.6%, with an average 2.7; did not show grains; second it 43.6%, 3.1%; fifty while third date, 14.7%, seventy one grains. Five three dates. Lines highest were: WAXWING/KRONSTADF2004//2*FRNCLN 18.6%, PFAU/MILAN/5/CHEN/AEGILOPS SQUARROSA (TAUS)//BCN/3/VEE#7/BOW/4/PASTOR/6/WHEAR/4/ SNI/TRAP#1/3/KAUZ*2/TRAP//KAUZ/5/C80.1/3*BATAVIA//2*WBLL1/7/C80.1/3*BATAVIA//2*WBLL1/5/REH/HARE//2*BCN/3/CROC_1/AE.SQUARROSA (213)//PGO/4/HUITES 16.0, WBLL1*2/BRAMBLING//SAAR/ 2*WAXWING/4/PBW343*2/KUKUNA//KRONSTAD F2004/3/PBW343*2/KUKUNA 15.4%. Within categories based on dates, twelve within 0.1-2.5% category, thirty 2.6-5.0%, thirteen 5.1-10.0%, seven 10.1-30.0%. group 2.3% a but some showed high like PFAU/MILAN/5/CHEN/AEGILOPSSQUARROSA(TAUS)//BCN/3/VEE#7/BOW/4/PASTOR/6/WHEAR/4/ which 43.6% date.