Abstract
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.
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Further Reading
Biodiversity International (2007) Developing crop descriptor lists. Bioversity technical bulletin no. 13
Cooke RJ, Reeves JC (2003) Plant genetic resources and molecular markers: variety registration in a new era. Plant Genet Resour: Charact Util 1:8187. https://doi.org/10.1079/PGR200312
Garrett KA et al (2017) Resistance genes in global crop breeding networks. Phytopathology 107:1268–1278. https://doi.org/10.1094/PHYTO-03-17-0082-FI
Guidelines for the conduct of tests for Distinctiveness, Uniformity and Stability. Protection of Plant varieties and Farmer’s Rights Authority, Government of India
Wani SH et al (2013) Intellectual property rights system in plant breeding. Jour Pl Sci Res 29(1):112–122
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Priyadarshan, P.M. (2019). Maintenance Breeding and Variety Release. In: PLANT BREEDING: Classical to Modern. Springer, Singapore. https://doi.org/10.1007/978-981-13-7095-3_25
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DOI: https://doi.org/10.1007/978-981-13-7095-3_25
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