Inheritance of aroma compounds in a model population of Fragaria × ananassa Duch.

Abstract

The inheritance of important aroma compounds is demonstrated by the use of a model population of Fragaria · ananassa. Two cultivars were chosen for the crossing, ÔMieze SchindlerÕ and ÔElsantaÕ, which differ strongly in pedigree, phenotype, and fruit traits, including flavour. Two hundred seedlings of this cross-combination were randomly selected from a population of 438 seedlings and propagated, with three plants per seedling. Aroma analysis was performed by automated headspace solid phase micro-extraction in combination with non-targeted data analysis (pattern recognition). This method can assist breeding programmes by the preparation and analysis of hundreds of samples by a simple procedure. The method was backed up by the substance identification using gas chromatography/mass spectrometry. Data processing of 78 detectable volatile compounds by Chromstat TM in the F 1 population showed very high variability of the volatile patterns. The ester methyl anthranilate (MA) is a discriminative key compound, being present only in the mother cultivar ÔMieze SchindlerÕ, and not detectable in ÔElsantaÕ. Methyl anthranilate was detectable in one fourth of the F 1 population. This low degree of inheritance shows that this important compound is easily lost in the breeding process, which could explain why all investigated modern cultivars do not contain MA. The results are valuable for the choice of breeding partners and for selection in seedling populations.

Genetic dissection of aroma volatile compounds from the essential oil of peach fruit: QTL analysis and identification of candidate genes using dense SNP maps

“…Similar observations have been reported in apple (Dunemann et al 2009;Rowan et al 2009b), strawberry (Olbricht et al 2008;Zorrilla-Fontanesi et al 2012), rose (Spiller et al 2010), and in non Rosaceae species, such as tomato (Tadmor et al 2002;Zanor et al 2009), grape (Doligez et al 2006), andeucalypt (O'Reilly-Wapstra et al 2011).…”

“…In tomato, transgressive segregation was also observed for VOCs but not for primary metabolites (Zanor et al 2009). The variety of patterns of inheritance found in this work was also described in VOC analyses in strawberry (Olbricht et al 2008;ZorrillaFontanesi et al 2012) and apple (Dunemann et al 2009). The case of linalool, where approximately 50 % of the individuals accumulate no linalool or very low levels (less than 10 % of the maximum value), was interpreted as the result of mixed qualitative and quantitative inheritance.…”

“…Dunemann et al (2009) showed that apple parental cultivars had varying quantities of VOCs in three consecutive years. In strawberry, some VOCs were highly variable depending on the time of harvest, while others were constant (Olbricht et al 2008). Despite this year-to-year variability, >67 % of the QTLs in the present study were recovered in both years.…”

“…In strawberry and "Greek basil" few generations of breeding were sufficient to induce the loss of some VOCs, when these were not positively selected (Olbricht et al 2008;Koutsos et al 2009). …”

Cartografiado de QTL y genes candidatos asociados a metabolitos determinantes de la calidad de fruto en melocotón

“…Giovannoni Olbricht et al, 2008). En el caso del melocotón, la disminución de la calidad del fruto ha sido también percibida por los consumidores y además es la mayor causa de insatisfacción de los mismos .…”