scholarly journals Chemical and fruit skin colour markers for simple quality control of tomato fruits

2015 ◽  
Vol 7 (2) ◽  
pp. 76-85 ◽  
Author(s):  
Vesna Weingerl ◽  
◽  
Tatjana Unuk ◽  
2012 ◽  
Vol 57 (2) ◽  
pp. 57-67 ◽  
Author(s):  
Marija Viljevac ◽  
Krunoslav Dugalic ◽  
Vlatka Jurkovic ◽  
Ines Mihaljevic ◽  
Vesna Tomas ◽  
...  

Fruit skin colour plays a major role in quality assessment of food, significantly determining consumer`s choice. Colour of sour cherries depends on anthocyanins which are phenolic compounds (flavonoids) present in high amounts in fruits. The aim of this study was to determine a possible relation between polyphenols (total phenolics and anthocyanins) and colour parameters of fruit skin of sour cherries. The plant material used in this study was twenty two sour cherry genotypes from an orchard of Agricultural Institute Osijek. Total phenolics and anthocyanins contents as well as colour parameters (L*, a*, b*, h and C) of fruit skin were determined. Variability between sour cherry genotypes in total phenolics and anthocyanins as well as in colour parameters was revealed. Total polyphenols content varied from 462.7 to 1049.0 mg GAE/100 g of fresh weight, while total anthocyanins ranged from 160.1 to 495.6 mg CGE/100 g of fresh weight. A significant positive correlation was found between polyphenols and anthocyanins content. Total phenolics content had a significant negative correlation with colour parameters b* and h, while anthocyanins content negatively correlated with colour parameters L*, b* and h. According to the obtained results, genotypes Maraska, Heimanns Konservenweichsel and Rexelle are the richest genotypes in polyphenols and anthocyanins content.


2007 ◽  
Vol 33 (4) ◽  
pp. 248-249
Author(s):  
S. M. Grigorov ◽  
Yu. O. Akimov

1970 ◽  
Vol 12 (3) ◽  
pp. 589-593 ◽  
Author(s):  
Prem Nath ◽  
O. P. Dutta

Inheritance of fruit hairiness, fruit skin colour and leaf lobing was studied in intervarietal crosses of okra, Abelmoschus esculentus (L.) Moench. Fruit hairiness was found to be monogenically controlled, the alleles for prickly hairs and smooth hairs showing interaction. Fruit skin colour was controlled digenically. Light cream colour and pink shading were both dominant over green. The inheritance of leaf lobing was monogenic with incomplete dominance.


2005 ◽  
pp. 45-53
Author(s):  
László Lakatos ◽  
Tibor Szabó ◽  
József Racskó ◽  
Zoltán Szabó ◽  
Miklós Soltész ◽  
...  

Skin colour of fruits is an important fruit quality parameter. Fruit growers know the phenomenon that the apple colouration is very good in one year while in other years the green and red apples can be differentiated only on the basis of the morphological characteristics of the fruits. There are great differences in values of cover colour between years.In the first step, the relationships between day and night temperature, the difference between day and night temperature and fruit skin colour should be determined. In this study, the authors investigate and quantify this relationship.


2021 ◽  
Vol 49 (3) ◽  
pp. 12434
Author(s):  
Xiaohui ZHOU ◽  
Songyu LIU ◽  
Yaping LIU ◽  
Jun LIU ◽  
Yan YANG ◽  
...  

Fruit skin colour intensity is one of the most important economic traits of purple eggplant. A wide diversity for fruit skin colour intensity exists in purple eggplant and the accumulation of anthocyanins and chlorophylls of fruit skin mainly affected colour intensity. However, limited information is available contributing to the molecular mechanisms underlying fruit skin colour intensity variation in purple eggplant. In the present study, variation of two purple eggplant advanced lines EP26 and EP28, with different fruit skin colour intensity was investigated. Higher anthocyanin contents and lower chlorophyll contents were observed in EP26 with deeper fruit skin colour intensity at two developmental stages. Comparative transcriptome analysis of EP26 and EP28 identified a total of 2218 differential expressed genes (DEGs) at two developmental stages. Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway enrichment analysis showed that these DEGs were mainly involved in flavonoid biosynthesis and photosynthesis. In addition, a total of 131 transcription factors including MYB, bHLH, WRKY, and NAC exhibited dynamic changes, which might be responsible for the variation of fruit pigments accumulation between EP26 and EP28. Taken together, these results expand our knowledge of molecular mechanisms underlying fruit skin colour intensity variation in eggplant, which allowing for improvement of fruit coloration in eggplant breeding.


2012 ◽  
Vol 37 (3) ◽  
pp. 465-472 ◽  
Author(s):  
Ma Malek ◽  
M Obaidul Islam ◽  
M Mamtazul ◽  
MK Sultan

Out of 78 germplasm of muskmelon (Cucumis melo L.), 67 germplasm (86%) survived against high salinity (13.82 ds/m) when screened at Benarpota, Satkhira, Khulna. These germplasm showed morphological variations in growth habit, leaf lobes, leaf pubescence, fruit shape, fruit ribs, fruit skin texture, flesh colour, flesh flavor, flesh texture, fruit splitting, fruit aroma, fruit size, seed coat colour, fruit skin colour at fully formed fruit and fruit skin colour at seed harvest maturity. The other qualitative characters, such as tendrils and flowering habit did not show morphological variations. Quantitative variations were observed in leaf length, leaf width, days to staminate flowering, days to pistillate flowering, fruit length, fruit width, fruit weight, number of fruits per plant, flesh thickness, number of seeds per fruit, days to fruit harvest and 1000-seed weight. Among the germplasm, BD-2255 and BD-9159 had no splitting of fruits. Therefore, these two germplasm can be selected for this trait. The characters, such as number fruits per plant and fruit weight exhibited highest number of fruits per plant (21) and maximum fruit weight (6.25 kg). These two characters should also be considered for improvement of muskmelon. Highest CV (%) was found in number of fruits per plants (36.35) followed by fruit weight (33.86). Bangladesh J. Agril. Res. 37(3): 465-472, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12124


2003 ◽  
Vol 118 (3) ◽  
pp. 193-196 ◽  
Author(s):  
Jeffrey W McKenna ◽  
Terry F Pechacek ◽  
Donna F Stroup

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