Performance of bread wheat advanced lines under late sowing

Thirty two advanced wheat lines which included four groups of sister lines and the commercial bread wheat cultivar Borlaug 100 were sown on January 16 and 30, 2019, at the Norman E. Borlaug Experimental Station, in the Yaqui Valley, Sonora, Mexico. Plots consisted of 1 bed 2 m long with two rows and 0.80 m apart without replications, and a seed density of 100 kg ha^-1. Average daily temperature (°C), maximum, minimum, relative humidity, rainfall, heat and cold units were recorded from January 1 to May 15, 2019. The variables evaluated were: days to heading, plant height (cm), and grain weight in 20 spikes (g). The average days for heading of lines was 76 for the first sowing date and 73 for the second. The average plant height of the group for the first sowing date was 95 cm and 88 for the second; line W15.92/4/PASTOR//HXL7573/2*BAU/3/WBLL1/5/OAX92.2.5/6/BABAX/LR42//BABAX/3/ ER2000 was the tallest in the first date with 120 cm and with 115 in the second date. The average grain weight of the group in 20 spikes in the first sowing date was 55 g and 40.9 in the second; the line MEX94.15.34/4/PASTOR//HXL7573/2*BAU/3/WBLL1/5/ BABAX/LR42//BABAX/3/ER2000 showed the highest weight in the first and second dates with 71.1 g and 49.5, respectively. In the first date, the line W15.92/4/PASTOR//HXL7573/2*BAU/3/WBLL1/5/IWA8612414/6/BABAX/ LR42//BABAX/3/ER2000 showed the lowest grain weight in 20 spikes with 41.0 g, while in the second date, the sister line PBL94.14.30/4/PASTOR//HXL7573/2*BAU/3/WBLL1/5/BABAX/LR42//BABAX/3/ER2000 (PTSS12SHB 00003T-0TOPB-099Y-099B-7Y-020Y-0B) showed 25.6 g. The average temperature was 18.26 °C with a maximum of 35.2 °C and a minimum of 3.6 °C; the average relative humidity was 67.0 %; there were 13.1 mm of precipitation, and the number of heat and cold units was 146 and 293, respectively.