Biological factors affecting seeds of wheat cultivars stored for cultivation with emphasis on stored product insects
Thalji, Talal Ahmad; Al Antary, Tawfiq Mustafa
Abstract Many wheat seeds of several cultivars were collected from farmers and governmental stores from the different regions in Jordan to study the variables which influence seeds quality and viability in 2012 and 2013 to explain the low yield of wheat in Jordan. Viability, germination and seeds purity percentages of the wheat seeds samples were assessed by the international standards. Seed viability was ranged from 0 to 100% depending on region and the wheat cultivar. Seeds germination % were ranged from 5 to 100. The correlation between viability and seeds germination % was greatly positive. The seeds purity was ranged between 7 and 100% in all cultivars. Number of holes caused by the stored product insects in all seeds in the local cultivars was significantly less than the other cultivars. The most common insect species in the seeds samples of all cultivars was Rhyzopertha dominica, followed by Oryzaephilus surinamensis, Sitophilus granarius, Tribolium confusum and T.casteneum. Several practices were concluded and suggested to have high quality wheat seeds prepared to germination.