http://oar.icrisat.org/id/eprint/11486 2020-04-11T11:56:53Z info:eu-repo/semantics/descriptiveMetadata http://oar.icrisat.org/11486/ Can a speed breeding approach accelerate genetic gain in pigeonpea? Saxena, K B Saxena, R K Hickey, L T Varshney, R K Plant Breeding Pigeonpea Genetics and Genomics Pure line breeding is a resource-intensive activity that takes 10 years or more to develop a new cultivar. In some crops, conducting off-season nurseries has significantly reduced the length of the breeding cycle. This approach could not be exploited in pigeonpea [Cajanus cajan (L.) Millsp.], because traditionally it has been a photoperiod-sensitive crop that requires long periods of darkness to induce flowering. However, the recent success of breeding early maturing photoperiod-insensitive genotypes has opened up the possibility of adopting ‘speed breeding’ techniques to enable rapid generation turnover. This paper outlines a speed breeding approach that integrates the use of immature seed germination for rapid generation advancement and a "single pod descent" method of breeding. To accelerate line development, while conserving genetic variability, the approach permits four generations per year and can fast-track field evaluation of resulting homozygous lines. Therefore, the breeding strategy conserves resources and has potential to deliver new early maturing cultivars within a substantially reduced timeframe of 4–5 years. Springer Verlag 2019-11 Article PeerReviewed application/pdf en http://oar.icrisat.org/11486/1/11_2019_Euphytica_Speed%20Breeding%20in%20Pigeonpea.pdf Saxena, K B and Saxena, R K and Hickey, L T and Varshney, R K (2019) Can a speed breeding approach accelerate genetic gain in pigeonpea? Euphytica (TSI), 215 (12). pp. 1-7. ISSN 0014-2336 https://doi.org/10.1007/s10681-019-2520-4 doi:10.1007/s10681-019-2520-4 info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage