Self- and cross-incompatibilities in sweetpotato and their implications on breeding. Gurmu, F., Hussein, S., & Laing, M. Australian Journal of Crop Science, 7(13):2074–2078, 2013.
Paper abstract bibtex Sweetpotato [Ipomoea batatas (L.) Lam.] is an important food security crop for many rural households in Africa, largely providing calories, together with some protein, minerals and vitamins. In Africa, sweetpotato yields range from 3-6 tons ha -1 relative to a maximum achievable yield of 40-50 tons ha -1 , due to biotic and abiotic stresses, and to socio-economic constraints affecting agricultural inputs. Genetic improvement of the crop is essential to boost productivity. However, the inherent nature of sweetpotato including self- and cross-incompatibility, polyploidy, heterozygosity and a large chromosome number (2n=6x=90) complicate its genetic improvement. In the breeding of the crop, self- and cross-incompatibilities limit combining of desirable traits from candidate parents if they belong to the same incompatibility group. The objectives of this review are three-fold. The first section focuses on highlighting the effects of incompatibility on sweetpotato breeding. The second part focuses on describing the types of incompatibilities and methods to determine and distinguish between incompatibility and sterility. The third part of the review examines techniques that can be used to overcome incompatibilities. The information outlined in the review may assist sweetpotato breeders to manage the detrimental effects of incompatibilities, and for the strategic genetic conservation of the crop.
@article{gurmu_self-_2013,
title = {Self- and cross-incompatibilities in sweetpotato and their implications on breeding},
volume = {7},
issn = {1835-2707},
url = {http://www.cropj.com/gurmu_7_13_2013_2074_2078.pdf},
abstract = {Sweetpotato [Ipomoea batatas (L.) Lam.] is an important food security crop for many rural households in Africa, largely providing calories, together with some protein, minerals and vitamins. In Africa, sweetpotato yields range from 3-6 tons ha -1 relative to a maximum achievable yield of 40-50 tons ha -1 , due to biotic and abiotic stresses, and to socio-economic constraints affecting agricultural inputs. Genetic improvement of the crop is essential to boost productivity. However, the inherent nature of sweetpotato including self- and cross-incompatibility, polyploidy, heterozygosity and a large chromosome number (2n=6x=90) complicate its genetic improvement. In the breeding of the crop, self- and cross-incompatibilities limit combining of desirable traits from candidate parents if they belong to the same incompatibility group. The objectives of this review are three-fold. The first section focuses on highlighting the effects of incompatibility on sweetpotato breeding. The second part focuses on describing the types of incompatibilities and methods to determine and distinguish between incompatibility and sterility. The third part of the review examines techniques that can be used to overcome incompatibilities. The information outlined in the review may assist sweetpotato breeders to manage the detrimental effects of incompatibilities, and for the strategic genetic conservation of the crop.},
language = {English},
number = {13},
journal = {Australian Journal of Crop Science},
author = {Gurmu, Fekadu and Hussein, Shimelis and Laing, Mark},
year = {2013},
pages = {2074--2078},
}
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