Effect of Allelopathic ( Chenopodium album )and pigweed ( Amaranthus retroflexus ) weeds on germination of wheat varieties
Subject Areas : crop production
حميد بهبر
1
(دانش آموخته كارشناسي ارشد رشته كشاورزي – زراعت ، واحدتبریز ، دانشگاه آزاد اسلامي تبریز ، ايران )
Keywords: allelopathy , wheat and weed,
Abstract :
In order to evaluate the effect of allelopathic weeds (chenopodium album ) and pigweed (amaranthus retroflexus) on germination of wheat, an experiment, in a completely randomized design in laboratory conditions with 3 replications and 3 factors including wheat cultivars at three levels (omid, alvand and azar2 ), the concentration of weed in 3 levels (control, 5% by volume, 15% by volume), the type of weed on two levels ( weed and amaranth) in the 2013 – 14 cropping year was implemented in Tabriz ( Khosroshahr) research center on agriculture. The results of variant analyses showed that the interactions between cultivars on weed , on Rvs Ohat root fresh weight and percentage of germination, the interaction of the extract on the fresh weight of root and leaf fresh weight, dry weight of leaf, stem length and germination, interaction weed extract on root fresh weight, root dry weight and germination percentage was significant at the level of one percent. Among the investigated cultivars, the highest affectability in the reduction wet rootlet weight was the essence of %15 volume of the weed and omid variety in %34g. Among the investigated cultivars Azar and Alvand were the most tolerant which had the length growth of 7.5cm but Omid had 3.2cm length growth. Pigweed, among the weeds, had the highest effect in reduction of length growth, dry and wet eight of the plant ( 45 percent ). Omid variety had the highest sensitivity to the pigweed. Altogether, the length growth of all varieties, because of allelopathic materials, were considerably limited in exposing with the essence of weeds.
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