Variability components and heritability of pomological and chemical characteristics in sour cherry clones of cultivar Montmorency

Abstract

In 12 sour cherry clones of cultivar Montmorency 5 pomological (fruit length, fruit width, fruit weight, stone weight and fruit stem length) and 4 chemical characteristics (soluble solid content, total acid content, invert sugar content and total sugar content) were investigated. Based on results of analysis of variance for all examined characteristics, variability components, coefficients of genetic and phenotypic variation and coefficient of heritability in a broader sense were calculated. Considering components of total variability, year represented the component that caused variability of majority examined characteristics in the highest percentage. Coefficients of genetic variation showed that in investigated clones total acid content varied the least (CVg = 1.79%), and the most fruit weight (CVg = 11.41%). The lowest phenotypic varying was determined for fruit length (CVf = 4.01%) but the highest for fruit weight (CVf = 13.86%). Coefficient of heritability was the highest for stone weight (h2 = 70.27%), and the lowest for total acid content (h2 = 7.73%).

Kod 12 klonova višnje sorte Montmorensi ispitivano je 5 pomoloških (dužina ploda, širina ploda, masa ploda, masa koštice i dužina peteljke ploda) i 4 hemijske osobine (sadržaj rastvorljivih suvih materija, sadržaj ukupnih kiselina, sadržaj invertnih šećera i sadržaj ukupnih šećera). Na osnovu rezultata analize varijanse za sve ispitivane osobine izračunate su komponente varijabilnosti, koeficijenti genetičke i fenotipske varijacije i koeficijent heritabilnosti u širem smislu. Od komponenti ukupne varijabilnosti godina je predstavljala komponentu koja je u najvećem procenutu uslovila varijabilnost većine proučavanih osobina. Koeficijenti genetičke varijacije pokazuju da je kod proučavanih klonova najmanje varirao sadržaj ukupnih kiselina (CVg =1,79%), a najviše masa ploda (CVg =11,41%). Najmanje fenotipsko variranje ustanovljeno je za dužinu ploda (CVf =4,01%), a najveće za masu ploda (CVf =13,86%). Koeficijent heritabilnost bilo je najveći za masu koštice (h2 = 70,27%), a najmanji za sadržaj ukupnih kiselina (h2 = 7,73%).