Article CC BY 4.0
refereed
published

Chromosome number and ploidy level of balm (Melissa officinalis)

GND
1172514569
Affiliation
Julius Kühn-Institute (JKI), Institute for Breeding Research on Horticultural Crops, Germany
Kittler, Johannes;
GND
1174648384
Affiliation
Julius Kühn-Institute (JKI), Institute for Breeding Research on Horticultural Crops, Germany
Schrader, Otto;
GND
1059150409
Affiliation
Julius Kühn-Institute (JKI), Institute for Breeding Research on Horticultural Crops, Germany
Kästner, Ute;
GND
173016197
Affiliation
Julius Kühn-Institute (JKI), Institute for Breeding Research on Horticultural Crops, Germany
Marthe, Frank

Background: Lemon balm (Melissa officinalis L.) is of increasing importance resulting in rising growth area. Improved knowledge on the genome structure, number of chromosomes in connection with the taxonomical structure of balm is indispensable for improved new varieties. Results: A collection of 40 balm accessions (M. officinalis) was characterized by flow cytometry and FISH (18/25S and 5S rDNA) to determine the chromosome number and ploidy level. Three different types were found: diploid genotypes with 2n = 2× = 32 chromosomes; tetraploid 2n = 4× = 64 chromosomes and triploid 2n = 3× = 48 chromosomes. A haploid base number of × = 16 chromosomes is likely. First time described triploid accessions are sterile but cytologically and morphologically stable for many years. Triploids express better winter hardiness and regeneration after harvesting cuts as well as bigger leaves and internodes. Conclusions: A basic chromosome number of x = 16 is reported for the first time for the species M. officinalis.

Preview

Cite

Citation style:
Could not load citation form.

Access Statistic

Total:
Downloads:
Abtractviews:
Last 12 Month:
Downloads:
Abtractviews:

Rights

License Holder: 2015 Kittler et al.

Use and reproduction:

Export