The use of selection indices was explored in a kale (Brassica oleracea L. var. acephala) breeding programme aimed at increasing digestible organicmatter (DOM) yield, and lowering S-methyl cysteine sulphoxide (SMCO) and thiocyanate ion (SCN−) contents by half-sib family selection. The predicted overall response with the optimum index (1.59) was slightly better than with the base index (1.56) which in turn was superior to the desired gains index (1.41). All three indices were expected to increase height and reduce amino acid content, mainly because of genetical correlations between DOM yield and height (r=0.76) and between SMCO and amino acid contents (r=0.81). Elimination of these correlated responses with the desired gains index would result in virtually no progress, and with the restricted index an undesirable increase in SMCO content would occur.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Allison M, Borzucki R (1978) Cellulase methods for the efficient digestion of grasses and brassicas. J Sci Food Agric 29:293–297
Becker WA (1975) Manual of quantitative genetics, 3rd edn. Washington State University Press, Washington, pp 147–158
Bradshaw JE (1986) The applications of biometrical genetics to the breeding of kale (Brassica oleracea L.). Eucarpia: Proc 6th Meeting, Section Biometrics in Plant Breeding. Birmingham (England), pp 117–124
Brim CA, Johnson HW, Cockerham CC (1959) Multiple selection criteria in soybeans. Agron J 51:42–46
Eagles HA, Frey KJ (1974) Expected and actual gains in economic value of oat lines from five selection methods. Crop Sci 14:861–864
Elgin JH, Hill RR, Zeiders DE (1970) Comparison of four methods of multiple trait selection for five traits in alfalfa. Crop Sci 10:190–193
Gosden AF (1978) An automated procedure for the estimation of thiocyanate in forage kale. J Sci Food Agric 29:597–600
Gosden AF (1979) An automated procedure for the estimation of S-methylcysteine sulphoxide in kale. J Sci Food Agric 30:892–898
Griffiths DW (1984) Fourth annual report of the Scottish crop research institute, p 170
Hayes JF, Hill WG (1980) A reparameterization of a genetic selection index to locate its sampling properties. Biometrics 36:237–248
Kempthorne O, Nordskog AW (1959) Restricted selection indices. Biometrics 15:10–19
Lawrence MJ (1981) Multiple trait selection — a review. Eucarpia: Proc 4th Meeting Section Biometrics in Plant Breeding, Poitiers (France), pp 263–284
Lin CY (1978) Index selection for genetic improvement of quantitative characters. Theor Appl Genet 52:49–56
Pesek J (1981) Multitrait selection in plant breeding. Eucarpia: Proc 4th Meeting Section Biometrics in Plant Breeding, Poitiers (France), pp 229–262
Pesek J, Baker RJ (1969) Desired improvement in relation to selection indices. Can J Plant Sci 49:803–804
Rosielle AA, Frey KJ (1975) Application of restricted selection indices for grain yield improvement in oats. Crop Sci 15:544–547
Smith HF (1936) A discriminant function for plant selection. Ann Eugen 7:240–250
Tai GCC (1986) A method to construct confidence interval for expected response to multi-trait selection. Theor Appl Genet 71:595–599
Williams JS (1962) The evaluation of a selection index. Biometrics 18:375–393
Wricke G, Weber WE (1986) Quantitative genetics and selection in plant breeding. Walter de Gruyter, Berlin New York, pp 337–353
Communicated by G. Wenzel
About this article
Cite this article
Bradshaw, J.E. The choice of selection index in kale (Brassica oleracea L.) population improvement. Theoret. Appl. Genetics 75, 165–169 (1987). https://doi.org/10.1007/BF00249159
- Kale breeding
- Half-sib family selection
- Efficiency of selection