(1) Citrus trees registered under Title 3, Division 4, Chapter 3, subchapter 2, Article 1 before the effective date of these regulations may maintain their registration as long as they meet the maintenance requirements of Section 3701.4 and the testing requirements of Section 3701.6.

(2) Until July 1, 2011, mother trees and mother lines not previously registered, may be eligible for registration provided they have tested negative for Tristeza and Huanglongbing in the previous twelve months; and seed trees not previously registered may be eligible for registration.

(3) Other than as described in 3701.3(a)(1) and (a)(2), mother trees, mother lines and seed trees for which registration is requested shall have been propagated using scion materials obtained from or tested by CCPP in accordance with Table 1, or from registered mother trees; and rootstock shall be from registered seed sources or propagated vegetatively from registered sources.

(4) Registered mother trees may be topworked and thereafter re-registered, provided that the topworking was performed using only registered materials.

(5) Registered mother trees infected with the citrus variant of the HSVd, citrus viroid IIa (CVd-IIa, Non-cachexia variant), that otherwise meet the testing requirements of Section 3701.6 may be registered.

(1) Propagative materials used in the production of increase trees shall be foundation stock, registered mother stock, registered mother line stock or registered seed tree stock.

(2) Registered mother trees may be topworked using registered materials to establish a registered increase tree.

(3) Until January 1, 2013, registered field-grown increase trees may be used as a source of propagative materials for a period of 18 months, beginning with the date the tree was propagated, with no additional testing.

(4) Registered increase trees, maintained in departmentally approved insect-resistant structures that meet the requirements of Section 3701.5, may be used as a source of propagative materials for a period of 48 months from date of propagated with no additional testing.

(5) Notwithstanding Section 3701.3(b)(4), no plant shall be maintained for a period longer than 72 months within an insect-resistant structure that also contains registered trees, unless that plant has been tested for Tristeza and Huanglongbing within the previous 72 months.