The sweetpotato whitefly, Bemisia tabaci (Gennadius), vectors numerous plant viruses, including Sweet potato leaf curl virus (SPLCV), a begomovirus. Experiments were conducted on seedlings of an indicator plant, the Brazilian morningglory (Ipomoea setosa Ker Gawl.), and sweet potato [Ipomoea batatas (L.) Lam.] to assess acquisition, retention and transmission of SPLCV by B. tabaci. Assays were ...

Tetrad sterility, in which only clumps of four premature pollen grains are released from anthers, has been observed some modern potato cultivars. It is a form cytoplasmic male sterility caused by the cytoplasm derived Mexican tetraploid species Solanum stoloniferum Schltdl. & Bouché., an important source resistance to Potato virus Y breeding. However, since S. highly polymorphic, tetrad-sterili...

A research project was conducted to detect presence of mycovirus, a probable virocontrol agent in Sclerotium rolfsii, destructive soil-borne plant pathogenic fungus. total 500 isolates the pathogen isolated from infected wheat, bush bean, tomato, eggplant, lentil, chickpea, chilli and okra grown Bangladesh following tissue planting methods brought Virology laboratory Okayama University, Japan. ...

Potato mop-top furovirus (PMTV) RNA 3 encodes the 20 kDa coat protein and a larger readthrough protein of 67 kDa. The readthrough protein is expressed by suppression of the amber stop codon which terminates the coat protein gene. A 21 kDa C-terminal fragment of the readthrough protein was doned, fused to glutathione S-transferase and expressed in E. coli. An antiserum prepared against purified ...

Using modern irrigation methods such as border irrigation is one way for an optimum usage of water. Potato, for this study, was cultured in a farm located at Kermanshah faculty of agriculture to evaluate the efficiency of border irrigation. The culture potato was the Agria variety and the applied treatment were 50, 75, and 100 percent of potato plant`s water requirement. Tapes were 12 m and the...

ACADEMIC DISSERTATION To be presented, with the permission of the Faculty of Agriculture and Forestry of University of Helsinki, for public criticism in the auditorium Ls3 of building B (Latokartanonkaari 7, Helsinki), February 5 th , 2010, at 12 o' clock noon. List of Original Publications The following original publications are referred to using the bold roman numerals throughout the text. Po...

BACKGROUND The degree of polymerization of amylose starch in potato was so large that the gel was hardness after gelatinization. Therefore, it is one of the most important ways that the microwave treatment was used to change the physicochemical properties of starch gel to make it suitable for the preparation of instant food. RESULTS The effect of microwave treatment on the physicochemical pro...

Potato virus Y (PVY) is an important plant pathogen with a wide host range that includes, among others, potato, tobacco, tomato and pepper. The coat protein (CP) of PVY has been commonly used in phylogenetic studies for strain classification. In this study, we used a pool of 292 CP sequences from isolates collected worldwide. After detecting and removing recombinant sequences, we applied Bayesi...