The biological and chemical variability of yacon.
This paper focuses on the biological and chemical variability of four yacon (Smallanthus sonchifolius) accessions cultivated under field conditions. Significant variations in tuber shape, weight, content of oligofructans, as well as in leaf isozymes, phenolics, and relative DNA contents were found. Accessions 6 and 88 were the most productive (up to 3.01 and 3.74 kg/plant); accession 48 was the most balanced from the yield aspect in three vegetative periods. A significantly higher content of beta-(2-->1) oligofructans was noted in accessions 48 and 88 as compared to 6 and 60. No difference in sucrose, glucose, and fructose level was observed. Only accession 6 exhibited separate acid phosphatase and esterase isoforms. Accessions 6 and 60 had the highest content of phenolics, and accession 88 had the lowest relative DNA content. Large yacon intraspecific variation may be useful in future detailed research as a good background for breeding, growing, and utilization in industrial processing.
Valentová
Katerina
K
Institute of Medical Chemistry and Biochemistry, Faculty of Medicine, Palacký University, Hnevotínská 3, CZ-77515 Olomouc, Czech Republic. kata.valentova@email.cz
Lebeda
Ales
A
Dolezalová
Ivana
I
Jirovský
David
D
Simonovska
Breda
B
Vovk
Irena
I
Kosina
Pavel
P
Gasmanová
Nikol
N
Dziechciarková
Marta
M
Ulrichová
Jitka
J
D019659:Asteraceae / Q000737:chemistry* / Q000145:classification* / Q000254:growth & development; D001947:Breeding; D018744:DNA, Plant / Q000032:analysis; D005630:Fructans / Q000032:analysis; D009844:Oligosaccharides / Q000032:analysis; D010636:Phenols / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry; D035281:Plant Tubers / Q000033:anatomy & histology / Q000737:chemistry
D018744:DNA, Plant; D005630:Fructans; D009844:Oligosaccharides; D010636:Phenols