Reaction of durum wheat cultivars and advanced lines to black point under natural conditions in crop seasons 2017-2018 and 2018-2019

Thirty one advanced durum wheat lines (ADWL) and cultivars CIRNO C2008, Baroyeca Oro C2013, Quetchehueca Oro C2013, and CENEB Oro C2017 were evaluated for their reaction to black point, under natural conditions at the Norman E. Borlaug Experimental Station in the Yaqui Valley, Mexico, during crop season 2017-2018, and twenty six ADWL and the four cultivars during 2018-2019. Sowing dates were November 14 and 24, 2017, and 12 and 22, 2018, respectively. Healthy and infected grains in ten spikes per line/cultivar were counted. In 2017-18, infection in the first date ranged from 0 to 51.3 %, with an average of 9.4, and for the second date 0 to 12.5 %, with an average of 2.8. Average infection of CIRNO C2008 was 14.4 %, 2.4 % for Baroyeca Oro C2013, 5.9 % for Quetchehueca Oro C2013, and 2.5 % for CENEB Oro C2017. The line with the highest percentage of infection was SWAHEN_2/KIRKI_8//PROZANA_1/4/ADAMAR_15// ALBIA_1/ALTAR84/3/SNITAN/9/GUAYACANINIA/GUANAY/8/GEDIZ/FGO//GTA/3/SRN_1/4/TOTUS/5/ENTE/ MEXI_2//HUI/4/YAV_1/3/LD357E/2*TC60//JO69/6/SOMBRA_20/7/JUPAREC2001/10/SILK_3/DIPPER_6/3/ ACO89/ DUKEM_4//5*ACO89/4/PLAT in the first date with 51.3 %. In 2018-2019, infection in the first date ranged from 0 to 9.5 %, with an average of 2.3, and for the second date 0 to 4.6 %, with an average of 1.2. The average infection for CIRNO C2008 was 0.8 %, 0.3 % for Baroyeca Oro C2013, 1.0 % for Quetchehueca Oro C2013, and 0.7 % for CENEB Oro C2017. Lines with the highest percentage of infection were: SELIM/10/RCOL/ THKNEE_2/9/USDA595/3/D67.3/ RABI//CRA/4/ALO/5/HUI/YAV_1/6/ARDENTE/7/HUI/YAV79/8/POD_9/11/NASR99/6/OSU-3880005/3/STOT// ALTAR84/ALD/4/KUCUK_2/5/CRAKE_10/RISSA/12/MÂALI/6/MUSK_1//ACO89/FNFOOT_2/4/MUSK_4/3/ PLATA_3//CREX/ALLA/5/OLUS*2/ILBOR and SOOTY_9/RASCON_37//GUAYACANINIA/11/BOOMER_33/ZAR/3/ BRAK_2/AJAIA_2//SOLGA_8/10/PLATA_10/6/MQUE/4/USDA573//QFN/AA_7/3/ALBA-D/5/AVO/HUI/7/PLATA_13 /8/THKNEE_11/9/CHEN/ALTAR84/3/HUI/POC//BUB/RUFO/4/FNFOOT/12/P91.272.3.1/3*MEXI75//2* JUPAREC2001/5/ARTIC, both with 9.5 % in the first sowing date.