Morphological, cytological and metabolic consequences of autopolyploidization in Hylocereus (Cactaceae) species.

ABSTRACT:

Background

Genome doubling may have multi-level effects on the morphology, viability and physiology of polyploids compared to diploids. We studied the changes associated with autopolyploidization in two systems of somatic newly induced polyploids, diploid-autotetraploid and triploid-autohexaploid, belonging to the genus Hylocereus (Cactaceae). Stomata, fruits, seeds, embryos, and pollen were studied. Fruit pulp and seeds were subjected to metabolite profiling using established gas chromatography-mass spectrometry (GC-MS) and ultra-performance liquid chromatography (UPLC) Q-TOF-MS/MS (time of flight)-protocols.

Results

Autopolyploid lines produced lower numbers of tetrads, larger pollen grains with lower viability, larger stomata with lower density, and smaller fruits with lo

SUBMITTER: Cohen H 

PROVIDER: S-EPMC3831760 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature