Genetic variation, heritability and genotype by environment interaction of morphological traits in a tetraploid rose population

V.W. Gitonga, C.F.S. Koning, K. Verlinden, O. Dolstra, R.G.F. Visser, C.A. Maliepaard, F.A. Krens

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)

Abstract

Background Global trade has ensured that the ornamental horticulture continues to grow worldwide, with rose hybrids being the most economically important genus (Rosa x hybrida). Due to changes in global trade and an increase in energy costs the ornamental industry has seen a shift in the production and sale of flowers from the US and Europe alone to production in Africa and Latin America. As Kenya is a major exporter of roses to Europe we studied the genetic variation and heritability of specific morphological traits in a tetraploid population grown in the Netherlands and in Kenya. The aim was to estimate genotype by environment interaction (G???E) and to investigate the implications of (G???E) for rose breeding. Results A tetraploid rose population (K5) from a cross between two tetraploid parents was field tested over two seasons in the Netherlands (summer and winter) and two locations in Kenya (Nairobi and Njoro). Ten traits were compared per genotype across the four environments. There were differences in trait association across the four environments showing that the traits were partially influenced by the environment.The traits that had a low ratio of ?2 ge/?2 g also showed a high value for heritability. For the traits number of petals, prickles on petioles, prickles on stems the interaction is minimal. For the traits chlorophyll content, stem width and side shoots we observed a much higher interaction ratio of 0.83, 1.43 and 3.13 respectively. The trait number of petals had the highest heritability of 0.96 and the lowest ?2 ge/?2 g ratio (0.08). The trait number of side shoots (SS) with the lowest heritability (0.40) also had the highest ?2 ge/?2 g ratio of 3.13. Conclusion Results attained by this experiment showed that we have different magnitudes of non-crossover G???E interactions. For the traits number of petals, prickles on stems and prickles on petioles with a low interaction and high heritability, selection can be done at any of the environments. Thus, these traits can be confirmed at the breeding site. For the traits stem width, side shoots and chlorophyll content that had a higher interaction selection for or against these traits should be done at the production location or at least be verified there.
Original languageEnglish
Article number146
Number of pages23
JournalBMC Genetics
Volume15
DOIs
Publication statusPublished - 2014

Fingerprint

Tetraploidy
Genotype
Kenya
Population
Chlorophyll
Netherlands
Breeding
Latin America
Industry
Costs and Cost Analysis

Keywords

  • x-chromosome
  • genome
  • recombination
  • qtl
  • snps
  • pigs

Cite this

@article{0d66d0aa25f84fa9943b4690715b1f0c,
title = "Genetic variation, heritability and genotype by environment interaction of morphological traits in a tetraploid rose population",
abstract = "Background Global trade has ensured that the ornamental horticulture continues to grow worldwide, with rose hybrids being the most economically important genus (Rosa x hybrida). Due to changes in global trade and an increase in energy costs the ornamental industry has seen a shift in the production and sale of flowers from the US and Europe alone to production in Africa and Latin America. As Kenya is a major exporter of roses to Europe we studied the genetic variation and heritability of specific morphological traits in a tetraploid population grown in the Netherlands and in Kenya. The aim was to estimate genotype by environment interaction (G???E) and to investigate the implications of (G???E) for rose breeding. Results A tetraploid rose population (K5) from a cross between two tetraploid parents was field tested over two seasons in the Netherlands (summer and winter) and two locations in Kenya (Nairobi and Njoro). Ten traits were compared per genotype across the four environments. There were differences in trait association across the four environments showing that the traits were partially influenced by the environment.The traits that had a low ratio of ?2 ge/?2 g also showed a high value for heritability. For the traits number of petals, prickles on petioles, prickles on stems the interaction is minimal. For the traits chlorophyll content, stem width and side shoots we observed a much higher interaction ratio of 0.83, 1.43 and 3.13 respectively. The trait number of petals had the highest heritability of 0.96 and the lowest ?2 ge/?2 g ratio (0.08). The trait number of side shoots (SS) with the lowest heritability (0.40) also had the highest ?2 ge/?2 g ratio of 3.13. Conclusion Results attained by this experiment showed that we have different magnitudes of non-crossover G???E interactions. For the traits number of petals, prickles on stems and prickles on petioles with a low interaction and high heritability, selection can be done at any of the environments. Thus, these traits can be confirmed at the breeding site. For the traits stem width, side shoots and chlorophyll content that had a higher interaction selection for or against these traits should be done at the production location or at least be verified there.",
keywords = "x-chromosome, genome, recombination, qtl, snps, pigs",
author = "V.W. Gitonga and C.F.S. Koning and K. Verlinden and O. Dolstra and R.G.F. Visser and C.A. Maliepaard and F.A. Krens",
year = "2014",
doi = "10.1186/s12863-014-0146-z",
language = "English",
volume = "15",
journal = "BMC Genetics",
issn = "1471-2156",
publisher = "Springer Verlag",

}

Genetic variation, heritability and genotype by environment interaction of morphological traits in a tetraploid rose population. / Gitonga, V.W.; Koning, C.F.S.; Verlinden, K.; Dolstra, O.; Visser, R.G.F.; Maliepaard, C.A.; Krens, F.A.

In: BMC Genetics, Vol. 15, 146, 2014.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Genetic variation, heritability and genotype by environment interaction of morphological traits in a tetraploid rose population

AU - Gitonga, V.W.

AU - Koning, C.F.S.

AU - Verlinden, K.

AU - Dolstra, O.

AU - Visser, R.G.F.

AU - Maliepaard, C.A.

AU - Krens, F.A.

PY - 2014

Y1 - 2014

N2 - Background Global trade has ensured that the ornamental horticulture continues to grow worldwide, with rose hybrids being the most economically important genus (Rosa x hybrida). Due to changes in global trade and an increase in energy costs the ornamental industry has seen a shift in the production and sale of flowers from the US and Europe alone to production in Africa and Latin America. As Kenya is a major exporter of roses to Europe we studied the genetic variation and heritability of specific morphological traits in a tetraploid population grown in the Netherlands and in Kenya. The aim was to estimate genotype by environment interaction (G???E) and to investigate the implications of (G???E) for rose breeding. Results A tetraploid rose population (K5) from a cross between two tetraploid parents was field tested over two seasons in the Netherlands (summer and winter) and two locations in Kenya (Nairobi and Njoro). Ten traits were compared per genotype across the four environments. There were differences in trait association across the four environments showing that the traits were partially influenced by the environment.The traits that had a low ratio of ?2 ge/?2 g also showed a high value for heritability. For the traits number of petals, prickles on petioles, prickles on stems the interaction is minimal. For the traits chlorophyll content, stem width and side shoots we observed a much higher interaction ratio of 0.83, 1.43 and 3.13 respectively. The trait number of petals had the highest heritability of 0.96 and the lowest ?2 ge/?2 g ratio (0.08). The trait number of side shoots (SS) with the lowest heritability (0.40) also had the highest ?2 ge/?2 g ratio of 3.13. Conclusion Results attained by this experiment showed that we have different magnitudes of non-crossover G???E interactions. For the traits number of petals, prickles on stems and prickles on petioles with a low interaction and high heritability, selection can be done at any of the environments. Thus, these traits can be confirmed at the breeding site. For the traits stem width, side shoots and chlorophyll content that had a higher interaction selection for or against these traits should be done at the production location or at least be verified there.

AB - Background Global trade has ensured that the ornamental horticulture continues to grow worldwide, with rose hybrids being the most economically important genus (Rosa x hybrida). Due to changes in global trade and an increase in energy costs the ornamental industry has seen a shift in the production and sale of flowers from the US and Europe alone to production in Africa and Latin America. As Kenya is a major exporter of roses to Europe we studied the genetic variation and heritability of specific morphological traits in a tetraploid population grown in the Netherlands and in Kenya. The aim was to estimate genotype by environment interaction (G???E) and to investigate the implications of (G???E) for rose breeding. Results A tetraploid rose population (K5) from a cross between two tetraploid parents was field tested over two seasons in the Netherlands (summer and winter) and two locations in Kenya (Nairobi and Njoro). Ten traits were compared per genotype across the four environments. There were differences in trait association across the four environments showing that the traits were partially influenced by the environment.The traits that had a low ratio of ?2 ge/?2 g also showed a high value for heritability. For the traits number of petals, prickles on petioles, prickles on stems the interaction is minimal. For the traits chlorophyll content, stem width and side shoots we observed a much higher interaction ratio of 0.83, 1.43 and 3.13 respectively. The trait number of petals had the highest heritability of 0.96 and the lowest ?2 ge/?2 g ratio (0.08). The trait number of side shoots (SS) with the lowest heritability (0.40) also had the highest ?2 ge/?2 g ratio of 3.13. Conclusion Results attained by this experiment showed that we have different magnitudes of non-crossover G???E interactions. For the traits number of petals, prickles on stems and prickles on petioles with a low interaction and high heritability, selection can be done at any of the environments. Thus, these traits can be confirmed at the breeding site. For the traits stem width, side shoots and chlorophyll content that had a higher interaction selection for or against these traits should be done at the production location or at least be verified there.

KW - x-chromosome

KW - genome

KW - recombination

KW - qtl

KW - snps

KW - pigs

U2 - 10.1186/s12863-014-0146-z

DO - 10.1186/s12863-014-0146-z

M3 - Article

VL - 15

JO - BMC Genetics

JF - BMC Genetics

SN - 1471-2156

M1 - 146

ER -