"Parent lines of known hybrid varieties can be considered as new plant varieties for registration purpose". Explain the meaning of parent lines and the eligibility for registration.

The Protection of Plant Varieties and Farmers' Rights (PPVFR) Act, 2001 allows the registration of both new plant varieties and their parent lines. Protecting parent lines ensures long-term benefits for seed companies, preventing unauthorized use of proprietary breeding materials. Meaning of Parent Lines: Parent lines refer to the distinct inbred or genetically stable lines used to produce hybrid plant varieties. Hybrid Varieties and Their Parent Lines: While hybrid varieties result from crossing two parent lines, these parent lines themselves can qualify as new plant varieties. Eligibility for Registration: Parent lines can be registered if they meet the criteria of novelty, distinctiveness, uniformity, and stability (NDUS) under the Act. If a parent line has not been commercially exploited in India for more than one year, it can be considered novel. The parent line must be distinct from existing registered plant varieties in terms of traits such as morphology, yield, or disease resistance. The parent line should show genetic consistency across multiple generations. The plant's essential characteristics must remain unchanged across successive generations. Registering parent lines allows plant breeders to gain exclusive rights and commercial benefits from their breeding efforts. Registration helps protect indigenous and unique genetic materials used in hybrid seed production. While breeders obtain exclusive rights over the registered parent lines, farmers retain the right to save, use, and exchange seeds under the Act. The parent lines undergo Distinctness, Uniformity, and Stability (DUS) testing before registration is granted. Registering parent lines strengthens intellectual property rights (IPR) in the agricultural sector and promotes innovation in plant breeding. Indian courts and the PPVFR Authority have recognized the validity of parent line registration when they fulfill NDUS criteria.