Screening Of Iranian Onion Seed Sets Genotypes For Resistance To Fusarium Oxysporum f. sp. Cepae
Journal Title: International Journal of Farming and Allied Sciences - Year 2012, Vol 1, Issue 1
Abstract
Root and basal rot disease (RBR) of onion, Fusarium oxysporum f. sp. cepa (FOC) is one of the most important diseases, causing tremendous losses in onion growing areas worldwide. In this study, various onion genotypes, including eight main and dominant Iranian seed sets and two exotic ones were tested against FOC incidence in greenhouse and field conditions of various growing stages. The incidence of the PBR was determined at three stages of early, flowering and seed setting stages on the bases of disease severity. The genotypes reacted differentially to FOC within and between various stages with a very high significant level. The genotypes were classified in five scoring scales accordingly. Highly infected ones tended to be associated with the high mean scores of 75 – 100 percent severity and the least infected genotypes had the lowest scores of 0 – 10 percent. In addition, the examined genotypes were ranked from 1 to 10 according to their markedly differing reactions to FOC at various stages. Variance and cluster analysis also showed similar results among the genotypes with various levels of infections. There was a direct, positive and enhancing correlation for every genotype to infection as the growing stages were reaching to maturing stage.
Authors and Affiliations
Mehdi Nasr Esfahani, Mansoure Hossaini and Narges Ashrafi
Keywords
Related Articles
- EP ID EP32225
- DOI -
- Views 474
- Downloads 1
Antioxidant activity and lipid peroxidation in response to citrus canker bacterial infection
Asiatic citrus canker caused by Xannthomonas citr subsp. citri (Xcc) is endemic in many citrus-growing areas damaging citrus industry. It is expected that citrus plants respond to bacterial infection through generation...
The evaluation of various agronomic traits of mungbean (Vigna radiate L.) genotypes under drought stress and non-stress conditions
In the arid and semi-arid regions, water deficit is the main factor that limits crops performance. In order to investigate the influence of drought stress on mungbean (Vigna radiate L.) genotypes Thailand, Pakistan, In...
Antibacterial Activity of Leaves Extract from Oak (Quercus persica) Against Some Positive and Negative Bacteria
The jungles in west and northwestern of Iran that are the main place where oak trees are grown, are 5.2 million hectare big and contain over 49 % of the jungles of Iran.This study reports on the antibacterial activity...
Yields reaction, Nitrogen uptake and canola qualitative attributes to nitrogen levels and previous plants+
in order to Investigation of nitrogen levels and previous plants effects on yield, nitrogen uptake and qualitative traits of canola in Ahvaz climate (condition), an experiment was performed based on randomized complete...
Differential antioxidative responses of susceptible and resistant wheat cultivars against Fusarium head blight
Fusarium graminearum is an important disease globally that causes serious damages on crops particularly on wheat. Currently, the mechanisms underlying resistance to Fusarium head blight (FHB) are still unknown. To unde...