Screening of Twelve Wheat (Triticum aestivum L.) Genotypes

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Abdelradi,,Nazem Mamoun Abdelrahman
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University of Khartoum
The objective of the research was to study the effect of late sowing on the performance of twelve bread wheat (Triticum aestivum L.) genotypes (11 accessions and one check cultivar) grown in the Demonstration Farm, Faculty of Agriculture, Shambat during the winter season of 2009/2010. Two sowing dates were used: the optimum sowing (15 Nov.) and late sowing (15 Dec.). A spilt plot design with three replicates was used to conduct the experiment. Analysis of variance revealed significant differences among the different genotypes for the effect of sowing date on the studied traits, except for days to 50% flowering, number of spikelets/spike, number of grains/plant and number of grains/spike. Moreover, genotypes × sowing date interaction (G × S) showed significant differences for days to 50% flowering, plant height and 1000-grain weight. For the other traits, G × S showed non-significant differences. Under the optimum sowing, the yield/ha was in the range 1.55 - 2.8 t/ha and under the late sowing the range was 1.2 - 2.42 t/ha. Late sowing reduced yield/ha by up to 16%. Under the optimum sowing and the late sowing, the genotype TEVEE-1/SHUHA-6 gave the highest yield/ha. In conclusion, the genotypes exhibited great variability as to the effect of late sowing. Among the studied genotypes, TEVEE-1/SHUHA-6, ZAIEM-4, MAZRAA-2, KAUZ/KAPSW and ADEL-3 are the most potential heat-tolerant, stable across contrasting environments (optimum versus late sowing) and with adequate yield potential under optimum sowing conditions compared to the check cultivar Imam
56 Pages
Wheat; Soil; Climate; Moisture; Farm; Africa; China; Egypt; India; Sudan