Volume 10, Number 3 (fall 2006)                   JCPP 2006, 10(3): 485-495 | Back to browse issues page


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N. Alizadeh, A. Babai-Ahary, Y. Assadi, M. Valizadeh, B. Passebaneslam. The Effects of Sclerotinia Stem Rot of Oilseed Rape on the Production and Quality of Extracted Oil. JCPP. 2006; 10 (3) :485-495
URL: http://jcpp.iut.ac.ir/article-1-599-en.html

Abstract:   (19604 Views)
Rape seed (Brassica napus L.) containing more than 40 per cent oil is one of the best oilseeds for cultivation in Iran. Sclerotinia stem rot is one of the important diseases of the rape seed, the causal agent being Sclerotinia sclerotiorum. The aim of our study was to assess the effect of the disease on the quantity and quality of the extracted oil and remaining foodstuff in a field experiment. In this research three cultivars including Okapi, SLM046 and Talayeh were examined under field conditions using a factorial design (cultivars and inoculations were two factors under study). The cultivars were inoculated with SK4 isolate of S. sclerotiorum. The inoculation was done on the plant stems at 30 cm height above the soil using Lewartosca method during mid flowering stage. One thousand- seed weight and glucosinolate, erucic and oleic fatty acids contents of the seeds were determind after the harvest. The results indicated that the infected plants in comparision with the controls had a lower 1000- seed weight and oleic acid content and a higher glucosinolates and erucic acid contents. There were significant differences among the genotypes in respect to all the studied traits except 1000- seed weight. Inverse correlation was observed between 1000- seed weight and erucic acid content or oil glucosinolates contents. It was concluded that the disease can reduce quantity and quality of seed oil and other nutrient contents.
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Type of Study: Research | Subject: General

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