Maintenance Breeding and Variety Release

  • P. M. Priyadarshan


Improved cultivars are usually more uniform than the local cultivars grown and maintained by the farmers. Such cultivars are to be multiplied so that it can be distributed to the farmers. As a repeated process, through multiplication, seed should be available at the start of each growing season. Every multiplication cycle commences from the stock seed of the variety, the “breeder seed” (BS). This BS is expected to maintain genetic purity (true-to-type). During maintenance and multiplication, there may be contamination and even complete loss of the improved traits. Prevention of contamination gets top most priority during maintenance.


Breeder’s trials designing field trials crop registration cultivar/variety maintenance DUS testing types of expression of characteristics DUS descriptors for major crops generation system of seed multiplication 

Further Reading

  1. Biodiversity International (2007) Developing crop descriptor lists. Bioversity technical bulletin no. 13Google Scholar
  2. Cooke RJ, Reeves JC (2003) Plant genetic resources and molecular markers: variety registration in a new era. Plant Genet Resour: Charact Util 1:8187. Scholar
  3. Garrett KA et al (2017) Resistance genes in global crop breeding networks. Phytopathology 107:1268–1278. Scholar
  4. Guidelines for the conduct of tests for Distinctiveness, Uniformity and Stability. Protection of Plant varieties and Farmer’s Rights Authority, Government of IndiaGoogle Scholar
  5. Wani SH et al (2013) Intellectual property rights system in plant breeding. Jour Pl Sci Res 29(1):112–122Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • P. M. Priyadarshan
    • 1
  1. 1.Erstwhile Deputy DirectorRubber Research Institute of IndiaKottayamIndia

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