Naslov
The effect of hand and chemical fruit thinning on 'Golden delicious cl. B' apple fruit quality

Autori
Jemrić, Tomislav ; Pavičić, Nikola ; Blašković, Dražen ; Krapac, Marin ; Pavičić, Dinko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Current Studies of Biotechnology, vol. 3 / Kniewald, Zlatko - Zagreb : Hrvatsko biotehnološko društvo ; Medicinska naklada, 2003, 193-198

Skup
Biotechnology and Food

Mjesto i datum
Zagreb, Hrvatska, 17.02.2003. - 20.02.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Malus domestica Borkh.; hand thinning; carbaryl; naphtalenacetamide; fruit quality

Sažetak
The effect of hand vs. chemical fruit thinning with 1-naphthaleneacetamide and carbaryl on apple fruit quality has been studied. The thinning method had no effect on trunk cross-sectional area (TCSA), yield and yield efficiency but chemicaly thinned trees had lower crop density. The fruits from hand thinned trees had lower fruit weight (FW), higher firmness, soluble solids content (SSC), SSC/titratable acid ratio (SSC/TA), Hue angle and lower ripening index (RI) than the fruits from chemically thinned trees. A negative correlation between FW and firmness was noticed in booth hand and chemical thinning. In chemical thinning, FW has been in negative correlation with SSC/TA and in positive correlation with RI. RI was in positive correlation with the TA and in negative correlation with SSC/TA for booth thinning methods. SSC was in negative correlation with starch content in chemical thinning only. In hand thinning, the correlation between Hue and RI was negative. The principal component analysis of FW, TA, SSC/TA, RI and Hue showed that the first two principal components (PC) were significant and they comprised 72.4 % of total variability. PC1 was mostly composed of TA, SSC/TA and RI, and PC2 of FW and Hue. PC1 and PC2 well separated fruits by the thinning method.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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