But are they Meritorious? Genetic Productivity Gains under Plant Intellectual Property Rights
利用华盛顿州小麦品种试验数据，评估植物品种保护（PVP）对种子产量提升的影响，发现PVP促进了遗传改良，带来公共收益。
Abstract The objective of this paper is to evaluate the effect of Plant Variety Protection (PVP) on the productive merit/yield increases of US seed varieties. As an example, we use wheat varieties, which are and have been available as both protected and unprotected under PVP from both the public and private sectors. We find evidence that PVP has contributed to the genetic improvement of wheat, using varietal trial data from Washington State. As the private open‐pollinated varieties exist only because of PVP and are higher yielding, these results indicate a clear public benefit from PVP.