Pennsylvania Code & Bulletin
COMMONWEALTH OF PENNSYLVANIA

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7 Pa. Code § 122.2. Definitions.

§ 122.2. Definitions.

 The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:

   Department—The Department of Agriculture of the Commonwealth.

   Elite nuclear block—Plants which are derived from heat-treated meristem tip cultures, are culture indexed, have been indexed negative for recognized viruses and are used as the source of propagating material for the nuclear block.

   Increase block—Plants which are produced directly from the nuclear block and are used as the source of propagating material for the production block.

   Index—Testing a plant for virus infection by means of inoculation from the plant to be tested to an indicator plant or other standard procedures such as seriological detection.

   Indicator plant—A woody or herbaceous plant used for detecting viruses.

   Nuclear block—Plants which are produced directly from the elite nuclear block, have been indexed negative for recognized viruses and are used as the source of propagating material for the increase block.

   Off-type—Possessing horticultural characteristics different from the variety or cultivar listed on the application.

   Production block—Plants which are produced directly from the increase block and are used as the source of propagating material for saleable plants.

   Program—The geranium certification program set forth in this chapter.

   Registered plant—A plant which has been produced under the provisions of this chapter and is certified as virus-tested by the Department; this includes plants in elite nuclear, nuclear, increase and production blocks and saleable plants.

   Virus-infected—The presence of a virus in a plant or plant part.

   Virus-like—An agent such as a spiroplasma, mycoplasma or viroid which elicits symptoms similar to those caused by viruses.

   Virus-tested—A plant which has been indexed negative for recognized viruses detectable by procedures outlined in this chapter.



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