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ISSN : 2456-8643

Title:
GRAIN YIELD AND OTHER PARAMETERS OF WHEAT LINES ADAPTED TO HEAT STRESS, SOWN LATE DURING THE CROP SEASON 2016-2017

Authors:
FUENTES-DÁVILA Guillermo, ROSAS-JÁUREGUI Ivón Alejandra, AYÓN-IBARRA Carlos Antonio, FÉLIX-FUENTES José Luis, FÉLIX-VALENCIA Pedro and TORRES-CRUZ María Monserrat ,Mexico

Abstract:
Twenty five advanced wheat lines, which included 12 sister lines, with tolerance to stress and the commercial durum wheat cultivar Movas C2009 as well as the commercial bread wheat cultivar Borlaug 100 were sown on January 12 and 31, 2017, 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, and a seed density of 100 kg ha-1. Average daily temperature (°C), maximum, minimum, relative humidity, and cold units were recorded from January 12 to May 15, 2017. The variables evaluated were: days to heading, plant height (cm), a thousand grain weight (g), and grain yield per plot (g). The average days for heading was 68 and the average plant height was 60 cm. The average a thousand grain weight was 41.6 g; the line KACHU#1 showed the highest weight with 52.9 g, while BAJ#1 showed the lowest weight 27.3 g. The average grain yield per plot was 294.5 g. Outstanding lines were VOROBEY with 460 g, KACHU#1 with 408 g, and PUB94.15.1.12/WBLL1 with 404 g, which were above 5 t ha-1. The average temperature was 19.08°C with a maximum of 37.7°C and a minimum of 5.02°C; the average relative humidity was 66.8%, and the number of cold units was 227

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