50 results about "Resistant virus" patented technology

The construction of a chimeric Pestivirus by the identification of selected regions in the 3′NTR of the viral RNA genome is described where additional RNA sequences can be stably inserted. These sequence insertions in the viral RNA genome were stable in replication and capable of forming infectious, RNase resistant virus particles. This chimeric Pestivirus with a 3′NTR insertion can be utilized as a quality control material in analytical assays for RNA targets, including external, internal controls, quantitative standards in PCR and NAT nucleic acid assays.

The invention relates to a breeding method of a good-taste and transport-and-storage-resistant pink tomato. The breeding method of the good-taste and transport-and-storage-resistant pink tomato comprises the following steps of taking Chunxuehong tomato as the female parent to perform 7 generations of individual selection and mixed seed reservation; taking Difenni tomato as the male parent to perform 4 generations of individual selection through a continuous selfing and molecular marker-assisted selection method to obtain 4th-generation strains, then combining tomato yellow leaf curl disease-resistant virus and performing 2 generations of individual selection to obtain 6th-generation strains, performing 2 generations of individual selection, removing abnormal plants and performing mixed seed reservation; crossing the female parent and the male parent to obtain seeds of the good-taste and transport-and-storage-resistant pink tomato. The bred good-taste and transport-and-storage-resistantpink tomato has the advantages of being good in taste, high in sugar degree, regular in fruit shape, good in color, resistant to transport and storage, robust in plant growth, high in comprehensive disease resistance and the like.