The effects of the US Plant Variety Protection Act on wheat genetic improvement
The U.S. Plant Variety Protection Act (PVPA) of 1970 was meant to strengthen intellectual property protection for plant breeders. A model of investment under partial excludability is developed, leading to the hypotheses that any increase in excludability or appropriability of the returns to invention, attributable to the PVPA, would lead to increases in investment or efficiency gains in varietal R&D, improved varietal quality, and enhanced royalties. These hypotheses are tested in an economic analysis of the effects of the PVPA on wheat genetic improvement. The PVPA appears to have contributed to increases in public expenditures on wheat variety improvement, but private-sector investment in wheat breeding does not appear to have increased. Moreover, econometric analyses indicate that the PVPA has not caused any increase in experimental or commercial wheat yields. However, the share of U.S. wheat acreage sown to private varieties has increased–from 3 percent in 1970 to 30 percent in the 1990s. These findings indicate that the PVPA has served primarily as a marketing tool with little impact on excludability or appropriability.
(This abstract was borrowed from another version of this item.)
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Meinzen-Dick, Ruth & Raju, K. V. & Gulati, Ashok, 2002.
"What Affects Organization and Collective Action for Managing Resources? Evidence from Canal Irrigation Systems in India,"
Elsevier, vol. 30(4), pages 649-666, April.
- Meinzen-Dick, Ruth Suseela & Raju, K. V. & Gulati, Ashok, 2000. "What affects organization and collective action for managing resources?: evidence from canal irrigation systems in India," EPTD discussion papers 61, International Food Policy Research Institute (IFPRI).
- Lesser, William H., 1993. "Valuation of Plant Variety Protection Certificates," Research Bulletins 123014, Cornell University, Department of Applied Economics and Management.
- Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January.
When requesting a correction, please mention this item's handle: RePEc:eee:respol:v:31:y:2002:i:4:p:527-542. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Zhang, Lei)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.