Accessibility navigation

Survival analysis of cereal crop variety innovations in the UK

Srinivasan, C. S. and Matchaya, G. C. (2012) Survival analysis of cereal crop variety innovations in the UK. In: 86th Annual Conference of the Agricultural Economics Society, April 16-18, 2012, Warwick. (Unpublished)

Text - Accepted Version
· Please see our End User Agreement before downloading.


It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.


This paper explores the changing survival patterns of cereal crop variety innovations in the UK since the introduction of plant breeders’ rights in the mid-1960s. Using non-parametric, semi-parametric and parametric approaches, we examine the determinants of the survival of wheat variety innovations, focusing on the impacts of changes to Plant Variety Protection (PVP) regime over the last four decades. We find that the period since the introduction of the PVP regime has been characterised by the accelerated development of new varieties and increased private sector participation in the breeding of cereal crop varieties. However, the increased flow of varieties has been accompanied by a sharp decline in the longevity of innovations. These trends may have contributed to a reduction in the returns appropriated by plant breeders from protected variety innovations and may explain the decline of conventional plant breeding in the UK. It may also explain the persistent demand from the seed industry for stronger protection. The strengthening of the PVP regime in conformity with the UPOV Convention of 1991, the introduction of EU-wide protection through the Community Plant Variety Office and the introduction of royalties on farm-saved seed have had a positive effect on the longevity of protected variety innovations, but have not been adequate to offset the long term decline in survival durations.

Item Type:Conference or Workshop Item (Paper)
Divisions:Life Sciences > School of Agriculture, Policy and Development > Department of Agri-Food Economics & Marketing
ID Code:28352
Uncontrolled Keywords:Survival Analysis, Plant Variety Protection, Intellectual Property Rights
Additional Information:Paper presented at AES Annual Conference on April 16, 2012


Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation