Can Parentage Analysis Facilitate Breeding Activities in Root and Tuber Crops?

Prince Emmanuel Norman, Asrat Asfaw, Pangirayi Bernard Tongoona, Agyemang Danquah, Eric Yirenkyi Danquah, David De Koeyer and Robert Asiedu
Additional contact information
Prince Emmanuel Norman: Sierra Leone Agricultural Research Institute, Tower Hill, Freetown PMB 1313, Sierra Leone
Asrat Asfaw: International Institute of Tropical Agriculture, Ibadan PMB 5320, Nigeria
Pangirayi Bernard Tongoona: West Africa Centre for Crop Improvement, College of Basic and Applied Sciences, University of Ghana, P.O. Box LG 30, Legon, Accra, Greater Accra, Ghana
Agyemang Danquah: West Africa Centre for Crop Improvement, College of Basic and Applied Sciences, University of Ghana, P.O. Box LG 30, Legon, Accra, Greater Accra, Ghana
Eric Yirenkyi Danquah: West Africa Centre for Crop Improvement, College of Basic and Applied Sciences, University of Ghana, P.O. Box LG 30, Legon, Accra, Greater Accra, Ghana
David De Koeyer: International Institute of Tropical Agriculture, Ibadan PMB 5320, Nigeria
Robert Asiedu: International Institute of Tropical Agriculture, Ibadan PMB 5320, Nigeria

Agriculture, 2018, vol. 8, issue 7, 1-24

Abstract: Controlled pollination in root and tuber crops is challenging. Complex ploidy, cross-incompatibility, erratic flowering patterns, outcrossing, etc., limit the efficiency of breeding progress in these crops. Half-sib breeding that involves random pollination among parents is a viable method to harness genetic gain in outcrossing crops that are problematic for performing planned and controlled pollination. The authenticity of resulting progenies from the half-sib breeding is essential to monitor the selection gain in the breeding program. Parentage analysis facilitated by molecular markers is among the available handy tools for crop breeders to maximize genetic gain in a breeding program. It can help to resolve the identity of half-sib progenies and reconstruct the pedigree in the outcrossing crops. This paper reviews the potential benefits of parentage analysis in breeding selected outcrossing root and tuber crops. It assesses how paternity analysis facilitates breeding activities and the ways it improves genetic gain in the root and tuber breeding programs. Conscious use of complementary techniques in the root and tuber breeding programs can increase the selection gain by reducing the long breeding cycle and cost, as well as reliable exploitation of the heritable variation in the desired direction.

Keywords: parentage assignment; DNA markers; pedigree; breeding efficiency; roots and tubers (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2018
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