TRICHOMES TYPES ANALYSIS AND THEIR DENSITY IN PARENTAL SPECIES SOLANUM TUBEROSUM AND S. CHACOENSE AND THEIR DERIVED SOMATIC HYBRIDS
Journal Title: Analele Stiintifice ale Universitatii Alexandru Ioan Cuza din Iasi, Serie noua, Sectiunea II a. Biologie vegetala - Year 2014, Vol 60, Issue 2
Abstract
Trichomes or hairs are appendices of epidermis which represent the first level of interaction between plants and herbivores or pathogens. The aim of this study was to identify differences regarding morphology or density in foliar trichomes corresponding to parental species and somatic hybrids. The third leaf was harvested from the plants of: S. chacoense, two cultivars of S. tuberosum ‘Delikat’ and ‘Desiree’ and 23 of their derived somatic hybrids obtained by mesophyll protoplast electrofusion. The source plants of all genotypes were first grew in vitro, and also transferred ex vitro, in a phytothron. The last type of plant material was used for density determinations. Somatic hybrids tend to maintain the typical hairs from S. chacoense. Differences concerning hairs structure are notable at both in vitro and ex vitro plants, depending on the genotype. The majority of trichomes types identified are corresponding to the Luckwill (1943) table. Mostly glandular trichomes density and the ratio between the two groups (glandular and non-glandular) are correlated with plant resistance to Colorado potato beetle.
Authors and Affiliations
ANTONIA MĂRGINEANU, IMOLA MOLNÁR, ELENA RAKOSY-TICAN
Keywords
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