Summary
The objective of this research was to compare the efficiency of the 4x×2x breeding scheme with the traditional 4x×4x method with respect to potato improvement. The basis for such a comparison was the parental value of four 2x and four 4x male parents from the International Potato Center (CIP) as measured by multitrait selection and progeny testing. The 2x parents produced 2n pollen by parallel spindles at anaphase II, which is genetically equivalent to a first division restitution (FDR) mechanism. Both 2x and 4x parents were crossed with four common 4x female parents. Thus, 32 families were evaluated over 2 years at four Peruvian locations. A selection index which considered tuber yield, tuber number, average tuber weight and specific gravity was used for multitrait selection. Three FDR 2x parents had better selection index scores than the 4x parents over the four locations. Estimates of broad-sense heritability for total yield using different number of replications and locations were calculated by using the variance components. The 4x × 2x breeding scheme was found to be better than the traditional 4x × 4x method since fewer replications and locations are required to evaluate tuber yield in 4x × 2x progenies than in 4x × 4x progenies. The FDR 2x parents were also better material than the 4x parents for testing combining ability for tuber yield of the 4x progenitors. This could be the result of the mode of FDR 2n pollen formation. The pollen of FDR 2x parents is more heterozygous, but more homogenous than n pollen from 4x parents.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Baker RJ (1986) Selection indices in plant breeding. CRC Press, Boca Raton, Florida
Concilio L (1986) Evaluation of the tetraploid×diploid (4x×2x) mating scheme and its efficiency in a new breeding program. PhD Thesis. University of Wisconsin-Madison, Wis.
Falconer DS (1989) Introduction to quantitative genetics, 3rd edn. Longman, London
Hallauer AO, Miranda JB (1981) Quantitative genetics in maize breeding. Iowa State University Press, Ames, Iowa
Hay RKM, Walker AJ (1989) An introduction to the physiology of crop yield. Longman scientific and technical, London
Ifenkwe OP, Alen AJ, Wurr, DE (1974) Factors affecting the relationship between tuber size and dry matter content. Am Potato J 51:233–241
Iwanaga M, Jatala P, Ortiz R, Guevara E (1989) Use of FDR 2n pollen to transfer resistance to Root-Knot nematodes into cultivated 4x potatoes. J Am Soc Hortic Sci 114:1008–1013
International Potato Center (1985) CIP Annual Report 1984. Lima, Peru
Mendiburu AO, Peloquin SJ (1977) The significance of 2n gametes in potato breeding. Theor Appl Genet 49:53–61
Mendoza HA (1987) Advances in population breeding and its potential impact on the efficiency of breeding potatoes for the developing countries. In: Jellis GJ, Richardson DE (eds) The production of new potato varieties. Technological advances. Cambridge University Press, Cambridge, pp 235–246
Mendoza HA, Haynes FL (1974) Genetic basis of heterosis for yield in the autotetraploid potato. Theor Appl Genet 45:21–25
Mok DWS, Peloquin SJ (1975a) The inheritance of three mechanisms of diplandroid formation in diploid potatoes. Heredity 35:295–302
Mok DWS, Peloquin SJ (1975b) Breeding value of 2n pollen (diplandroids) in tetraploid × diploid crosses in potatoes. Theor Appl Genet 46:307–314
Nevado M, Ortiz R (1985) Prueba de Hipotesis en series de ensayos. AgroCiencia 1:23–37
Peloquin SJ, Yerk GL, Werner JE, Darmo E (1989) Potato breeding with haploids and 2n gametes. Genome 31:1000–1004
Singh RK, Chaudhary BD (1979) Biometrical methods in quantitative genetic analysis. Kalyani Publ, India, pp 191–200
Thompson PG, Mendoza HA (1984) Genetic variance estimates in a heterogenous population propagated from true seed (TPS). Am Potato J 61:697–702
Wright AJ (1971) The analysis and prediction of some factor interactions in grass breeding. J Agric Sci 76:301–306
Author information
Authors and Affiliations
Additional information
Communicated by G. Wenzel
Paper from the Laboratory of Genetics. Research supported by the College of Agricultural and Life Sciences; International Potato Center; USDA-CRGO-88-37234 3619, and Frito-Lay, Inc., USA
Rights and permissions
About this article
Cite this article
Ortiz, R., Peloquin, S.J., Freyre, R. et al. Efficiency of potato breeding using FDR 2n gametes for multitrait selection and progeny testing. Theoret. Appl. Genetics 82, 602–608 (1991). https://doi.org/10.1007/BF00226797
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00226797