Study on effect of the potassium provided by organic or chemical fertilizer for virus-free potato;

The influence factors of virus-free potato test tube shoot transplanting survival percent is studied;

There is the reward decrement relationship between K amounts from organic and inorganic fertilizer and yield of virus-free potato,and the reciprocal effect presents a negative value.

The clone and sequence analysis on the CP gene of potato virus A;

Determination and phylogenetic tree analysis of 3 -part genomic sequence of a potato virus A isolates occurred in Hangzhou;

According to the nucleotide and amino acid sequences of coat protein( CP), the Potato virus A (PVA)was identified in Fujian.

Research on preservation techniques of potato virus by test-tube plantlet and its infecting potential;

Four main potato viruses(PVX,PVY,PVS AND PLRV)were determined by the conventional DAS-ELISA and improved DAS-ELISA techniques respectively.

To set up a rapid,accurate and sensitive detection of potato virus will make sure the potato quality and control the virus spread.

202 samples of potato leaves gathered from potato planting areas in Guizhou province were tested by the DAS-ELISA method which is often used to detect potato viruses.