نتایج جستجو برای: seedling blight
تعداد نتایج: 21694 فیلتر نتایج به سال:
T h e eff iciency wage mode l is developed in this paper to explain the radical restructuring of agricultural product ion towards cattle and sheep in Ire land that occurred after the blight at tack of 1846 . T h e pre -Famine structure and product ion changes consequent to the blight are examined statistically using cross sectional data at a county level. T h e paper concludes that the blight l...
Management of fire blight is complicated by limitations on use of antibiotics in agriculture, antibiotic resistance development, and limited efficacy of alternative control agents. Even though successful in control, preventive antibiotic sprays also affect non-target bacteria, aiding the selection for resistance which could ultimately be transferred to the pathogen Erwinia amylovora. Trunk inje...
Fire blight of apple (Malus × domestica Borkh.) can be found throughout the United States and many other countries and is a serious problem on trees of susceptible apple cultivars (9). Fire blight is caused by the bacterium Erwinia amylovora and occurs also on pear, quince, Rubus spp., and several other rosaceous hosts. The initial inoculum in an established orchard comes from overwintering can...
Bacterial leaf blight is one of the major diseases in rice and affects yields. Thus, various methods have been applied to protect rice from this disease. Here, we show systemic translocation of the human drug niclosamide (5-chloro-N-(2-chloro-4-nitrophenyl)2-hydroxybenzamide) in rice and its long-term effect on prevention of rice leaf blight. The development of Xanthomonas oryzae pv. oryzae-ind...
basis of their virulence against rice plants. Bui. Nat. Inst. Arg. Sci., C. 20, 67-82 (1966) 12) Mukoo, H., and Isaka, M.: Re-examination of some physiological characteristics of Xanthomonas oryzae (Uyeda et Ishiyama) Dowson. Ann.of Phytopath. Soc. Japan 29, 13-19 (1964) 13) Nishimura, Y., and Sakaguchi, S.: Heredity of resistance to bacterial leaf blight of rice. Preliminary report I. J. Genet...
Fire blight, a devastating bacterial disease in pome fruits, causes severe economic losses worldwide. Hitherto, an effective control could only be achieved by using antibiotics, but this implies potential risks for human health, livestock and environment. A new approach allows transient inhibition of a step in the flavonoid pathway, thereby inducing the formation of a novel antimicrobial 3-deox...
A test of taxonomic predictivity: resistance to early blight in wild relatives of cultivated potato.
Host plant resistance offers an attractive method of control for early blight (caused by the foliar fungus Alternaria solani), a widespread disease that appears annually in potato crops worldwide. We tested the assumed ability of taxonomy to predict the presence of early blight resistance genes in wild Solanum species for which resistance was observed in related species. We also tested associat...
Sheath blight of rice, caused by Rhizoctonia solani, is one of the most devastating rice diseases worldwide. No rice cultivar has been found to be completely resistant to this fungus. Identifying antioxidant enzymes activities (activity of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT)) and malondialdehyde content (MDA) responding to sheath blight infestation is imperative to ...
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