Investigation of genetic parameters and phytochemical characteristics in plum under altitude change

Abstract

Suitability of ecological factors is the most important factor affecting the productivity of agricultural activities. Sensitivity of the phytochemical characteristics that are direct the product quality to the changing environmental conditions is very high. In the present study, how climate change depending on the altitude change affects phytochemical properties in plum cultivars ?Friar? and ?Fortune? fruits which were harvested at two different altitudes (200 m and 800 m a.b.s.), during two consecutive years (2017 and 2018) was investigated. In addition, under environmental and genotype modeling, genetic parameters of the properties were determined. In line with the obtained results from the study, it was determined that the phytochemical characteristics varied parallel to the altitude change within the same latitude. Generally, amount of individual phenolic compounds and organic acids were increased with altitude increase while general phytochemical characteristics such as total phenolic content and antioxidant activity were decreased. Heritabilities of general characteristics were found lower, due to high difference between genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) than organic and phenolic acids. Ranking of organic acids in both altitudes was found as malic acid> acetic acid> oxalic acid> ascorbic acid in both cultivars. In terms of phenolic acids, a stable order could not be determined while chlorogenic acid has come to the front in both cultivars. Since cultivar/location interactions found significant according to bi-plot segregation, investigating the changes at genotype level would be more accurate.

Screening and classification of rosehip (Rosa canina L.) genotypes based on horticultural characteristics

“…The findings of this study were comparable to those of other studies that investigated the bioactive profile of Rosa canina cultivars/genotypes [ 6 , 8 , 19 , 23 ]. Although the differences are probably mainly due to the genotypes examined, factors such as the differences in analysis methods, ecological differences between the selection areas, harvest time and type, maturity period, etc., strongly affect the final phytochemical composition of the fruits [ 14 , 43 , 44 ].…”

“…Although the co-location of major quantitative trait loci (QTLs) for phenolic compounds and organic acids were reported on the same linkage groups in plum (LG1 and LG6) [ 45 ], when required, these compounds are interconvertible [ 46 ]. Therefore, these classes of compounds may sometimes show a negative relationship [ 44 ].…”