Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Can a speed breeding approach accelerate genetic gain in pigeonpea?

Saxena, K.B., Saxena, R.K., Hickey, L.T. and Varshney, R.K.ORCID: 0000-0002-4562-9131 (2019) Can a speed breeding approach accelerate genetic gain in pigeonpea? Euphytica, 215 (12). Art. 202.

Link to Published Version:
*Subscription may be required


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.

Item Type: Journal Article
Publisher: Kluwer Academic Publishers
Copyright: © 2021 Springer Nature Switzerland AG.
Item Control Page Item Control Page