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ABSTRACT Plants of _Saxifraga granulata_, derived from a factorial crossing experiment, were raised under seminatural conditions (garden) to determine whether style morphology and other

floral traits were heritable and correlated with female pollination efficiency (seed-set per flower). Differences between paternal half-sib families were statistically significant for most

characters with low to moderate narrow-sense heritabilities for flower number, flowering date, plant height, petal size, stamen length and seed-set (h2 = 0.03 − 0.54) and high heritabilities

for style length and stigma size (h2 > 0.75). In addition to a major trend contrasting early flowering, tall, many-flowered genotypes with large flowers and those with the opposite

features, there was a strong negative genetic correlation between stamen length and stigma size. Seed-set per flower was highest for early flowering plants with many flowers, tall stems and

large stigmas, and increased by 120 per cent after hand-pollination. Only flowering date had a direct effect on seed-set, whereas other traits were associated with seed-set through general

plant vigour. Genetic responses predicted from selection coefficients, heritabilities and genetic correlations indicated a shift towards increased plant height, flower number, style length

and stigma size and earlier flowering date. SIMILAR CONTENT BEING VIEWED BY OTHERS ISLAND PLANTS WITH NEWLY DISCOVERED REPRODUCTIVE TRAITS HAVE HIGHER CAPACITY FOR UNIPARENTAL REPRODUCTION,

SUPPORTING BAKER’S LAW Article Open access 18 May 2024 GENETIC DIVERSITY, MORPHOLOGICAL AND QUALITY TRAITS OF _MOMORDICA DIOICA_ Article Open access 04 December 2024 CONVERGENT EVOLUTIONARY

PATTERNS OF HETEROSTYLY ACROSS ANGIOSPERMS SUPPORT THE POLLINATION-PRECISION HYPOTHESIS Article Open access 09 February 2024 ARTICLE PDF REFERENCES * Andersson, S, and Widén, B. 1993.

Pollinator-mediated selection on floral traits in a synthetic population of _Senecio integrifolius_ (Asteraceae). _Oikos_, 66, 72–79. Article  Google Scholar  * Bell, G. 1985. On the

function of flowers. _Proc R Soc B_, 224, 223–265. Google Scholar  * Campbell, D R. 1989. Measurements of selection in a hermaphroditic plant: variation in male and female pollination

success. _Evolution_, 43, 318–334. Article  PubMed  Google Scholar  * Campbell, D R, Waser, N M, and Price, M V. 1994. Indirect selection of stigma position in Ipomopsis aggregata via a

genetically correlated trait. _Evolution_, 48, 55–68. Article  PubMed  Google Scholar  * Comstock, R E, and Robinson, H F. 1952. Estimation of average dominance of genes. In: Gowen, J. W.

(ed.) _Heterosis_, pp. 494–516. Iowa State College Press, Ames. Google Scholar  * Conner, J, and Via, S. 1993. Patterns of phenotypic and genetic correlations among morphological and

life-history traits in wild radish _Raphanus raphanistrum_. _Evolution_, 47, 704–711. Article  PubMed  Google Scholar  * Eckert, C G, and Barrett, S C H. 1995. Style morph ratios in

tristylous _Decodon verticillatus_ (Lythraceae): selection vs. historical contingency. _Ecology_, 76, 1051–1066. Article  Google Scholar  * Falconer, D S. 1981. _Introduction to Quantitative

Genetics_, 2nd edn. Longman, Harlow, Essex. Google Scholar  * Fenster, C B, and Ritland, K. 1994. Quantitative genetics of mating system divergence in the yellow monkey-flower species

complex. _Heredity_, 73, 422–435. Article  Google Scholar  * Houle, D. 1992. Comparing evolvability and variability of quantitative traits. _Genetics_, 130, 195–204. CAS  PubMed  PubMed

Central  Google Scholar  * Kempthorne, O. 1955. The correlation between relatives in a single autotetraploid population. _Genetics_, 40, 168–174. CAS  PubMed  PubMed Central  Google Scholar

  * Lande, R. 1979. Quantitative genetic analysis of multivariate evolution, applied to brain:body size allometry. _Evolution_, 33, 402–416. Article  PubMed  Google Scholar  * Lande, R, and

Arnold, S J. 1983. The measurement of selection on correlated characters. _Evolution_, 37, 1210–1226. Article  PubMed  Google Scholar  * Lindgaard Hansen, J E, and Molau, U. 1994.

Pollination biology, mating system, and seed set in a Danish population of _Saxifraga granulata_. _Nord J Bot_, 14, 257–268. Article  Google Scholar  * Marson-Jones, E M, and Turrill, W B.

1947. A quantitative study of petal size and shape in _Saxifraga granulata_. _J Genet_, 48, 206–218. Article  Google Scholar  * Mazer, S J, and Schick, C T. 1991. Constancy of population

parameters for life-history and floral traits in _Raphanus sativus_ L. II. Effects of planting density on phenotype and heritability estimates. _Evolution_, 45, 1888–1907. Article  PubMed 

Google Scholar  * Motten, A F, and Antonovics, J. 1992. Determinants of outcrossing rate in a predominantly self-fertilizing weed, _Datura stramonium_ (Solanaceae). _Am J Bot_, 79, 419–427.

Article  Google Scholar  * Primack, R B. 1987. Relationships among flowers, fruits, and seeds. _Ann Rev Ecol Syst_, 18, 409–430. Article  Google Scholar  * Robertson, A W, Diaz, A, and

MacNair, M R. 1994. The quantitative genetics of floral characters in _Mimulus guttatus_. _Heredity_, 72, 300–311. Article  Google Scholar  * SAS, 1985. _SAS User's Guide Statistics_.

SAS Institute, Cary NC. * Schemske, D W, and Horvitz, C C. 1989. Temporal variation in selection on a floral character. _Evolution_, 43, 461–465. Article  PubMed  Google Scholar  * Thomson,

J D, and Stratton, D A. 1985. Floral morphology and cross-pollination in _Erythronium grandiflorum_(Liliaceae). _Am J Bot_, 72, 433–437. Article  Google Scholar  * Tutin, T G, Heywood, V H,

Burges, N A, Moore, D M, Valentine, D H, Walters, S M, and Webb, D A. 1976. _Flora Europaea_, vol. 1. Cambridge University Press, Cambridge. Google Scholar  * Weimarck, H. 1963. _Skânes

Flora_. Corona, Lund, Sweden. Google Scholar  * Via, S. 1984. The quantitative genetics of polyphagy in an insect herbivore. II. Genetic correlations in larval performance within and among

host plants. _Evolution_, 38, 896–905. Article  PubMed  Google Scholar  * Widén, B, and Andersson, S. 1993. Quantitative genetics of life-history and morphology in a rare plant, _Senecio

integrifolius_. _Heredity_, 70, 503–514. Article  Google Scholar  * Young, J H, Stanton, M L, Ellstrand, N C, and Clegg, J M. 1994. Temporal and spatial variation in heritability and genetic

correlations among floral traits in _Raphanus sativus_, wild radish. _Heredity_, 73, 298–308. Article  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS *

Department of Systematic Botany, University of Lund, Ö Vallgatan 18–20, Lund, S-22361, Sweden Stefan Andersson Authors * Stefan Andersson View author publications You can also search for

this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Andersson, S. Floral variation in _Saxifraga granulata_: phenotypic

selection, quantitative genetics and predicted response to selection. _Heredity_ 77, 217–223 (1996). https://doi.org/10.1038/hdy.1996.127 Download citation * Received: 22 November 1995 *

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Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative KEYWORDS * floral morphology *

genetic correlation * heritability * natural selection * _Saxifraga granulata_