relation: http://oar.icrisat.org/11486/
title: Can a speed breeding approach accelerate genetic gain in pigeonpea?
creator: Saxena, K B
creator: Saxena, R K
creator: Hickey, L T
creator: Varshney, R K
subject: Plant Breeding
subject: Pigeonpea
subject: Genetics and Genomics
description: 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.
publisher: Springer Verlag
date: 2019-11
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/11486/1/11_2019_Euphytica_Speed%20Breeding%20in%20Pigeonpea.pdf
identifier:   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     
relation: https://doi.org/10.1007/s10681-019-2520-4
relation: doi:10.1007/s10681-019-2520-4