scholarly journals Malformed Fruits in `Niitaka' Pear Influenced by Pruning Strength, GA and Mepiquat Treatment

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 815D-815
Author(s):  
Wol-Soo Kim* ◽  
Jung-An Jo

This study was carried out to observe the effects of the pruning strength and the growth regulator on shoot growth and fruit shape in Pyrus pyrifolia cv. Niitaka. GA paste (GA) was known as a promoter of malformed fruits, but Mepiquat as an inhibitor. Light pruning treatment, of which removed the half of lateral shoots, decreased leaf area, weight, thickness, and the length of shoots and internodes in comparison to severe pruning. The occurrence of calyx perpetual fruit (CPF) in fruitlet stage was higher about 45% in severe pruning than in light pruning. Light pruning decreased malformed fruit by 10% compared to severe pruning at harvest stage, but there was no difference in soluble solid content of fruits between two treatments. Also light pruning decreased fruit weight. GA paste treatment on 50 days after full bloom significantly increased fruit weight, but Mepiquat decreased. In treatment of Mepiquat and GA the occurrence of malformed fruit was 31.3% and 35%, respectively and the index of symmetry was higher than control. Therefore, these results suggested that the light pruning has a positive effect on the production of symmetry fruit.

2021 ◽  
Author(s):  
Parisa Jariani ◽  
Hossein Ramshini ◽  
Mahmoud Lotfi ◽  
Fatemeh Amini ◽  
Hassan Abtahi ◽  
...  

Abstract The most popular Iranian cantaloupe ‘Samsoori’ is highly susceptible to devastating viruses transmitted by Aphis gossypii. A dominant gene (Vat) causing resistance to the aphid and viruses was detected in ‘Ginsen Makuwa’ in spite of its low fruit quality. They were crossed and the segregating offspring were assessed for combining favorable traits with Vat gene. In the F2 population, moderate to high broad-sense heritability estimates were found for measured traits including, fruit weight (0.78) and soluble solid content (SSC) (0.7). The F3 families were significantly different from each other for earliness, fruit shape indices, cavity, flesh thickness, SSC, and fruit numbers per plant. Resistant and susceptible plants were determined by genotyping 210 plants in F4 generation using a dominant DNA marker for the resistant allele of Vat gene. Out of 15 selected F3 families, four were susceptible, three were homozygote resistant and six showed segregation in their progeny for the Vat gene. Selection assisted by Vat gene marker was a very useful and applied approach for the identification of healthy plants along with phenotypic selection.


2020 ◽  
Vol 1 (1) ◽  
pp. 67-74
Author(s):  
Mădălina Butac ◽  
Mihai Chivu

The aim of this study was to assess the yield and fruits quality of plum produced in ecological system.In 2019-2020 periods the influence of different fertilizers (Biohumus, Macys BC 28 and Cifamin BK) on yield and fruits quality at three plum cultivars (‘Centenar’, ‘Tita’ and ‘Stanley’) was carried out in a demonstrative plot from Research Institute for Fruit Growing Pitești, Romania. Biohumus was applied to the soil in increasing dosesfrom 0.5 l/tree (respectively 415 l/ha), 0.7 l/tree (respectively 585 l/ha) to 0.9 l / tree (respectively 750 l/ha) in two moments: in spring before the start of vegetation and in autumn after the fall of the leaves.Macys BC 28 and Cifamin BK fertilizers were applied foliar in doses of 2 l/ha, respectively 1 l/ha, in two moments: after flowering and in the young fruit phase.As results of the investigations we found that: the highest fruit yield was obtained at ‘Centenar’ (47.36 kg/tree) and ‘Stanley’ (41.00 kg/tree) cultivars in fertilization variant 3 (Biohumus – 0,9 l/tree, soil application + Macys BC 28 – 2 l/ha, foliar application + Cifamin BK – 1 l/ha, foliar application);the best results regarding the fruits weight were also obtained in the 3rd fertilization variant (Biohumus – 0,9 l/tree, soil application + Macys BC 28 – 2 l/ha, foliar application + Cifamin BK – 1 l/ha, foliar application), among the varieties being noted the ‘Tita’cv. with an average fruit weight of 59. 14 g; the fruits soluble solid content was higher in the case of the fertilized variants than in the unfertilized variant and the fruits aciditywas higher in the case of the unfertilized variant than in the fertilized variants.


Author(s):  
Rakesh Kumar ◽  
Anil Bhushan ◽  
R. K. Samnotra ◽  
Tuhina Dey ◽  
Manmohan Sharma ◽  
...  

Assessment of genetic diversity was made for sixteen yields and yield contributing traits in twenty-one tomato genotypes using D2 statistics. These genotypes were grouped into five clusters by the use of the Tocher method. Cluster I was the most significant, comprising 13 genotypes (Pusa Ruby, CLN2123A1 Red, PKM-1, IIHR-2042, Marglobe, EC 163605, Hawaii 7998, Palam Pink, EC 521038, Punjab Rakthak, EC 163383, Arka Abha and IIVR BT-10) followed by Cluster II  with 5 genotypes (EC 163611, Punjab Sartaj, EC 160885, Punjab Barkha Bahar  and Roma). Other Clusters (II, IV and V) were solitary ones (EC 249515, Kashi Chayan, DVRT-2). Cluster II recorded a maximum intra cluster distance of 3521.73 followed by cluster I (2796.45), whereas, cluster II, IV and V had zero intra cluster distance. The inter cluster D2 value also ranged widely, with a minimum value of 4082.34 between cluster I and IV, indicating a close relationship among the genotypes included. The maximum inter cluster D2 value (23102.20) between cluster II and V indicates high diversity among the genotypes in the clusters. Hence,   maximum contribution towards divergence was observed by average fruit weight (14%) followed by fruit set percentage (12%), number of flowers per cluster (8%), fruit yield per plant (7%), number of fruits per truss (6 %) and total soluble solid content (6 %). Hence, due importance could be given to the selection of genotypes for further improvement based on these traits.


HortScience ◽  
2011 ◽  
Vol 46 (6) ◽  
pp. 849-853 ◽  
Author(s):  
Sandra M. Bijelić ◽  
Branislava R. Gološin ◽  
Jelena I. Ninić Todorović ◽  
Slobodan B. Cerović ◽  
Boris M. Popović

High variability in the natural population of the cornelian cherry in the region of Serbia is an important genetic potential for use in breeding programs. In the course of a 2-year study, significant differences have been noted in morphometric characteristics (fruit weight and flesh to stone ratio were 2.11 to 6.71 g and 78.52% to 88.74%, respectively) and chemical composition of the mesocarp [content of total dry matter (TSC), soluble solid content (SSC), total acids, total and reducing sugars, sucrose, Ca-pectates, vitamin C, proteins, cellulose, anthocyanins, and tannins was recorded 18.26% to 33.39%, 17.40% to 32.37%, 1.62% to 3.75%, 11.77% to 26.30%, 9.50% to 24.07%, 0.38% to 3.25%, 0.32% to 2.44%, 14.56 to 39.22 mg/100 g fruit, 0.20% to 2.71%, 0.43% to 0.95%, 35.63 to 126.53 mg/100 g fruit, and 0.56% to 1.47%, respectively] of 18 cornelian cherry genotypes from Vojvodina Province. The data were compared and analyzed by multivariate techniques [correlation matrix calculation and principal component analysis (PCA)]. The highest positive correlation was found between TSC–SSC and total sugar–reducing sugar (r > 0.95). Using PCA, different genotypes of cornelian cherry can be grouped in clusters based on similarity in their chemical composition.


2017 ◽  
Vol 62 (4) ◽  
pp. 329-339
Author(s):  
Jasminka Milivojevic ◽  
Dragan Radivojevic ◽  
Mirjana Ruml ◽  
Suzana Urosevic ◽  
Jelena Dragisic-Maksimovic

The main focus of our study was to investigate effects of the modified microclimate under a grey hail protection net (HPN) on biometrical fruit characteristics (fruit weight, index of fruit shape, and seed number per fruit) and nutritional value (soluble solid content - SSC, titratable acidity - TA, total anthocyanins - TACY, total phenolics - TPH and total antioxidant capacity - TAC) of the ?Bluecrop? highbush blueberry (Vaccinium corymbosum L.). The study was conducted in the ?Bluecrop? highbush blueberry plantation located in Mladenovac (Serbia) during two consecutive years (2013, 2014). The orchard was established using two-year-old nursery trees in spring 2011, at a planting density of 3,300 bushes per ha. The grey polyethylene net (SILVERLUX?, Helios Group, Lurano, Italy) with a Leno wave structure and a mesh size of 2.8 x 8 mm was used. During the research period, light intensity was measured weekly at 12.00 hr using a digital lux-meter ?Peak teck? PT-5025 (Germany). Air temperature and relative humidity within the canopy were recorded using climate dataloggers (type DT-171, Shenzhen Flus Technology Co., Ltd, China) both under HPN and in the open field (OF). Twelve readings per treatment were taken at 2-hour intervals every day in each season. In both years of observation, light was reduced by 5-20% under HPN, whereby daily maximum temperature was 2.4?C lower causing 4% higher daily minimum relative air humidity than in OF. ?Bluecrop? had significantly higher average fruit weights under HPN ranging from 1.93 g (2013) to 1.86 g (2014) in comparison to those observed in OF. The SSC did not differ between the treatments in 2014, whereas a significantly higher mean value was registered in the fruits harvested under HPN (12.8%) compared to those from OF in 2013. The mean TA was higher under HPN in 2014 (0.57%), whereas in 2013 a significantly higher TA content was found in OF (0.87%). HPN showed a positive effect on the TPH content (7.12 mg GA/g FW), but an almost 2-fold higher value was registered in 2013. Similar to this, TAC was 2.5-fold higher in 2013, without a significant effect of HPN in both experimental years.


2011 ◽  
Vol 39 (1) ◽  
pp. 255 ◽  
Author(s):  
Sezai ERCISLI ◽  
Suzan O. YILMAZ ◽  
Jelena GADZE ◽  
Ahmed DZUBUR ◽  
Semina HADZIABULIC ◽  
...  

This study was carried out on 13 local cornelian cherry (Cornus mas L.) genotypes grown in Yusufeli (Artvin) in Northeast Anatolia in Turkey. Cornelian cherry fruits from these 13 genotypes were harvested and analyzed during the ripening period in 2010. Some physical and chemical characteristics of cultivars were determined. Fruit weight and fruit flesh ratio of these genotypes ranged from 2.72 to 4.11 g and 79.08 to 89.99%. Soluble solid content were determined the lowest as 13.7% and the highest as 18.6%. The genotypes had vitamin C between 31 to 70 mg/100 g with average of 50 mg/100 g. Total protein, cellulose, tannin and ash content of genotypes were determined between 0.75-2.18%; 0.36-1.08%; 0.57-1.28% and 0.51-1.13%. The genotypes were found to be free of pest and diseases. The present study showed that there were enough variability among cornelian cherry genotypes grown in same ecological conditions of a small area and these genotypes could be important both to improve nutritional value through germplasm enhancement programmes and to use them in organic production.


2021 ◽  
Author(s):  
A. Alizadeh ◽  
N. Aghayi ◽  
M. Soofi ◽  
L. Roufegarinejad

AbstractThe study was carried out to evaluate the viability of probiotic bacteria as well as physicochemical and sensory characteristics of synbiotic added sucrose-free mango nectar. The mango nectar samples were prepared incorporating different concentrations of inulin and stevia (0, 2 and 4% w/w) and stored for 45 days at 4 °C. The results indicated that the growth of Lactobacillus casei was strongly influenced by the beverage composition. Therefore, the addition of inulin and stevia had a positive effect on the viability of L. casei, especially with 2% w/w inulin or inulin in combination with stevia. However, bacterial viability reduced during storage. According to the results, pH and total soluble solid content of the samples decreased during storage; however, the viscosity values of mango nectars were elevated by the addition of inulin and stevia. Additionally, all beverages were considered a suitable medium to keep the L. casei survival above the minimum recommended value (106–107 CFU mL−1) during storage. In general, it can be concluded that the sample containing 2% inulin and 2% stevia in combination provided the best viability of L. casei with acceptable physicochemical properties and sensory characteristics that could be introduced as synbiotic and low-calorie mango nectar.


2021 ◽  
Vol 13 (15) ◽  
pp. 8359
Author(s):  
Neva Karatas ◽  
Sezai Ercisli ◽  
Mehmet Ramazan Bozhuyuk ◽  
Ozlem Cakir ◽  
Tomas Necas ◽  
...  

The northeastern Anatolia region of Turkey is one of the richest plant biodiversity areas in Turkey. This study describes some important tree and fruit characteristics of 20 seed-propagated summer apple genotypes from northeastern Anatolia using morphological and biochemical markers. The genotypes were evaluated morphologically for tree growth habit, ripening date, fruit weight, fruit firmness, fruit shape, fruit color, fruit taste, juiciness and aroma. The biochemical characteristics measured were organic acids, SSC (soluble solid content), titratable acidity, vitamin C, total phenolic content and antioxidant capacity. We found significant differences for most of the morphological and biochemical characteristics. The genotypes exhibited quite diverse harvest dates ranging from 4 July to 16 August. Summer apple genotypes had fruit weight between 101.9 g and 133.5 g. The genotypes had diverse fruit shapes, including round, conic and oblate, and over fruit colours such as pink, red, yellow and green. Genotypes GUM7 and GUM13 stood out for fruit weight, SSC, total phenolic and antioxidant capacity. GUM7 and GUM13 present dissimilarity from the other genotypes. While the first showed a lower average fruit weight, SSC, total phenolic content and antioxidant capacity, the second revealed higher average of fruit weight, total phenolic content, antioxidant capacity and higher SSC. Due to their favorable characteristics, GUM13 can be used for further crosses with genotypes of other groups, which also present favorable characteristics.


2022 ◽  
Vol 82 ◽  
Author(s):  
N. Karatas

Abstract Summer apples are one of the most important plant community in Artvin province located Northeastern part of Turkey. In present study 22 local apple genotypes were characterized by phenological, morphological, biochemical and sensory properties. Harvest date was the main phenological data. Morphological measurements included fruit weight, fruit shape, fruit ground color, fruit over color, fruit over color coverage and fruit firmness, respectively. Sensory measurements were as juiciness and aroma and biochemical characteristics included organic acids, SSC (Soluble Solid Content), vitamin C, total phenolic content and antioxidant capacity. Genotypes exhibited variable harvest dates ranging from 11 July to 13 August and cv. Summered harvested 30 July 2017. The majority of genotypes were harvested before cv. Summered. Fruit weight were also quite variable among genotypes which found to be between 89 g and 132 g, and most of the genotypes had bigger fruits than cv. Summered. Pink, red, yellow and green fruit skin color was evident and main fruit shape were determined as round, conic and oblate among genotypes. ART08-9, ART08-4, ART08-21 and ART08-22 had distinct bigger fruits and ART08-1, ART08-2, ART08-5, ART08-12 and ART08-17 had higher total phenolic content and antioxidant capacity. The results of the study showed significant differences for most of the phenological, morphological, sensory and biochemical characteristics. Thus, the phonological, morphological, sensory and biochemical characteristics of summer apple genotypes were distinguishable and these results suggest that phonological, morphological, sensory and biochemical differences of the summer apple genotypes can be attributed to differences in genetic background of genotypes which placed different groups by PCoA analysis.


2017 ◽  
Vol 30 (1) ◽  
pp. 164-171 ◽  
Author(s):  
RODRIGO HIYOSHI DALMAZZO NOWAKI ◽  
◽  
ARTHUR BERNARDES CECÍLIO FILHO ◽  
ROGÉRIO TEIXEIRA DE FARIA ◽  
ANDERSON FERNANDO WAMSER ◽  
...  

ABSTRACT Nitrogen (N) is the second most important nutrient required by watermelons that can limit their growth and affect fruit quality when deficient. We evaluated the soil (N-nitrate) and foliar N contents and soluble-solid content of the watermelon 'Top Gun' in Brazil at six rates of N fertilization (0, 50, 100, 150, 200 and 250 kg ha-1). N-nitrate and foliar N levels increased linearly with rate. Number of total and marketable fruit, weight of total and marketable fruit and total and marketable yields varied quadratically with rate. N rates of 187 and 184 kg ha-1 produced the highest total and marketable yields, respectively. The rate of N fertilization did not significantly affect total-solid content.


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