Step 1: Understanding the Concept:
Under the Protection of Plant Varieties and Farmers' Rights (PPV&FR) Act, 2001, any new, extant, or essentially derived variety must undergo Distinctness, Uniformity, and Stability (DUS) testing before registration.
To conduct these field trials and maintain reference samples in the national genebank, applicants must submit a specified quantity of high-quality seeds of the candidate variety to the PPV&FR Authority.
Step 2: Detailed Explanation:
The required quantity of seed varies depending on the crop species, seed size, and reproductive system:
1. Seed Requirements for Rice (Oryza sativa):
For rice, which is a self-pollinated cereal crop, the PPV&FR Authority requires the submission of:
- \( 3000\text{ g} \) (3.0 kg) of seeds of the candidate variety.
- Along with the candidate variety, the applicant must often submit similar quantities for parental lines if registering a hybrid.
2. Physical Standards: The seeds must meet strict physical and physiological standards, including over \( 98% \) physical purity, less than \( 12% \) moisture content, and a minimum of \( 80% \) germination capacity.
This quantity is split between active DUS testing sites and long-term storage in the national genebank.
Therefore, the required seed quantity for rice registration is \( 3000\text{ g} \).
Step 3: Final Answer:
The seed quantity to be submitted for rice DUS testing is 3000g, corresponding to option (D).