scholarly journals Evaluation of foreign remontant raspberry cultivars for production and breeding

Author(s):  
S. N. Evdokimenko

The over 100 remontant raspberry cultivars worldwide continue to variegate, with breeding mostly successful in the USA, Canada, Great Britain, Poland, Switzerland, the Netherlands and Russia. In most native climates of Russia, foreign varieties unluckily do not realise their biological potential to not attain the originator-declared character. The research aimed at a comprehensive study of introduced remontant raspberry cultivars to clarify the prospects of their production and breeding. The study was being conducted over 2018-2020 on the genetic raspberry collection plot of the All-Russian Horticultural Institute for Breeding, Agrotechnology and Nursery’s Kokino base station (Bryansk Region). Research focused on ten foreign remontant raspberry cultivars. The late-maturing Atlant variety of the state-permitted crop catalogue served a control. Research followed the generally accepted protocols. Statistical experimental data analyses were accomplished with Microsoft Excel. Phenotypic evaluation of the introduced remontant raspberry cultivars by plant morphology revealed their Middle Russia-specific traits of growth and development. The greatest yield surface (238-316 cm) was observed in Joan J, Imara, Himbo Top and Carolina foreign cultivars. The remontant varieties studied were found to distinguish by late maturity and low yield (2.9-6.1 t/ha), thusly being off-focus to industrial horticulture. Imara, Erika, Sugana, Joan J, Carolina and Himbo Top leading with a 5.0-6.1 t/ha yield can be recommended in home gardening. Selected foreign cultivars deserve attention as a genetic resource in breeding for larger fruit size (Poranna Rosa, Driscoll Maravilla, Sugana), higher soluble solid content (Kweli, Karolina, Kwanza), fruit strength (Kwanza, Driscoll Maravilla), optimal fruit detachment force (Himbo Top, Joan J, Imara, Kwanza) and compact bush habitus (Poranna Rosa).

2020 ◽  
Vol 115 (2) ◽  
pp. 297
Author(s):  
Seda TUNÇAY ÇAĞATAY ◽  
Gülşah ÇALIK KOÇ ◽  
Fereshteh REZAEİ ◽  
Özlem DARCANSOY İŞERI ◽  
Feride İffet ŞAHIN ◽  
...  

<p>This study aimed to investigate the effects of grafting tomato on different tobacco rootstocks on quality factors and nicotine content. The commercial variety (Solanum lycopersicum ‘H2274’) (BIOTECH) of the tomato was used as the scion plant, and six different tobacco (Nicotiana tabacum L.) rootstocks were used: Taşova, Tekel, Muş, Samsun, Dişbudak, Hasankeyf cultivars. Cleft grafting method was used in all plants. Yield of non-grafted and grafted plants grown in open-field conditions was calculated, and there was a significant increase in yield in grafted tomatoes compared to non-grafted tomatoes. There was significantly increased lycopene and β-carotene levels (mg kg-1), especially in ‘Tekel’, ‘Taşova’, ‘Samsun’, and ‘Hasankeyf’ tobacco grafts. There was a statistically significant difference between grafted and non-grafted plants according to 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical retention capacities and total phenol (TP) values. Evaluation of quality determinants including pH values, titratable acidity values (citric acid %), soluble solid content (SSC)(oBrix) , fruit size ratios, showed that tomatoes grafted with ‘Muş’ tobacco rootstock were of higher quality. There was no significant difference between grafted and non-grafted plants according to nicotine analysis of the tobacco-grafted tomatoes, and due to acceptable ranges of nicotin level on tobacco grafted tomato plants were considered to be suitable for consumption. It could be concluded that grafting practices have significantly positive effects on tomato yield and quality.<br /><br /></p>


Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 964
Author(s):  
Monika Figiel-Kroczyńska ◽  
Ireneusz Ochmian ◽  
Sabina Lachowicz ◽  
Marcelina Krupa-Małkiewicz ◽  
Jacek Wróbel ◽  
...  

Recently, there has been a trend towards healthy food. Consumers are looking for products that have health-promoting properties in addition to their taste. Actinidia fruit, apart from being tasty, contains valuable macro and micronutrients, vitamins, polyphenols and pectins. Tested cultivar Sientiabrskaja belong to Actinidia arguta and cultivars Geneva, Issai and Ken’s Red to A. kolomitka. They well tolerate conditions of moderate climate with negative temperatures in winter. To improve fruit quality, an additional summer pruning of the plants was performed at the time of ripening. After the second additional cutting of Actinidia shoots, an increase in the content of N, P and K in fruit was observed. The additional pruning also had a beneficial effect on the change in fruit color. The fruits were darker, especially in the cultivars Geneva and Ken’s Red. This is related to the ripening of fruit and an increase in anthocyanin content. Additional summer pruning caused changes in the polyphenol content-the amount of phenolic acid and flavan-3 ols decreased, while the level of anthocyanins increased. The antioxidant capacity also increased as well as fruit size, dry matter, pectin and Soluble Solid Content (SSC) content. The acidity of the fruit also decreased which positively affects the taste of the fruit. The highest content of polyphenols and L-ascorbic acid was found in ‘Sientiabrskaja’ fruit; but the highest antioxidant activity (determined Free Radical Diphenylpicrylhydrazyl-DPPH•, ABTS•+ and Ferric Antioxidant Power-FRAP) was found in fruit with red skin coloring and anthocyanins-‘Issai’ and ‘Ken’s Red’.


HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 505A-505
Author(s):  
Zhiguo Ju ◽  
Yousheng Duan ◽  
Zhiqiang Ju

`Feicheng' peach is a favorite cultivar in China due to is large size and high eating quality. However, its storage quality is poor and its market life is relatively short. Different combinations of AVG and GA3 applied at various stages of fruit development were evaluated to prolong market life of this fruit. A combination of 80-100 mg/L AVG and 80-100 mg/L GA3 at the end of pit hardening gave the best results. This treatment retarded the change in ground color, loss of firmness, and reduction in acidity by2 to 3 weeks. Since harvest was delayed, soluble solid content increased compared with the control that was harvested earlier. Fruit size increased significantly on treated trees. During 6 weeks of storage at 0 °C, ethylene evolution increased and fruit firmness decreased slowly in control fruit, but in AVG+GA3-treated fruit, they did not change from the low initial levels. At the end of storage, control fruit developed a high percentage (83%) of tissue browning and mealiness after warming at 20 °C for 4 days, but the AVG+GA3-treated fruit ripened normally and developed much less (16%) tissue browning and mealiness. Our results showed that the market life of `Feicheng' peaches can be prolonged by at least 4 weeks by using the AVG+GA3 treatment to delay harvest and improve storage quality.


Author(s):  
Ewa Szpadzik ◽  
Tomasz Krupa ◽  
Wojciech Niemiec ◽  
Ewa Jadczuk-Tobjasz

The study involving 5 cherry cultivars was conducted in 2015–2016. The varieties ‘Techlovan’, ‘Summit’, ‘Sylvia’, ‘Kordia’ and ‘Regina’ were planted in 2010 in the Experimental Orchard of the Department of Pomology in Warsaw-Wilanów on GiSelA5 rootstock. The aim of the study was to evaluate the production value and dessert fruit quality as well as health proprieties of the tested cultivars’ fruits and select the most valuable ones. It was shown that the varieties differed in fruit set and yielding as well as fruit quality (i.e. fruit size, firmness, soluble solid content, acidity) and health benefits (i.e. polyphenol, anthocyanin, and ascorbic acid content). ‘Techlovan’ trees had the lowest yield, but their fruits were of high quality. ‘Kordia’ and ‘Regina’ also provided high quality fruit with high total polyphenol content. In contrast, the ‘Sylvia’ cultivar had a high yield, but the fruit obtained from it was of poor quality. All tested cultivars had similar vitamin C content.


Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1054 ◽  
Author(s):  
Awraris Derbie Assefa ◽  
On-Sook Hur ◽  
Na-Young Ro ◽  
Jae-Eun Lee ◽  
Ae-Jin Hwang ◽  
...  

Watermelon (Citrullus lanatus) is a non-seasonal, economically important, cucurbit cultivated throughout the world, with Asia as a continent contributing the most. As part of the effort to diversify watermelon genetic resources in the already cultivated group, this study was devoted to providing baseline data on morphological quality traits and health-beneficial phytonutrients of watermelon germplasm collections, thereby promoting watermelon research and cultivation programs. To this end, we reported morphological traits, citrulline, and arginine levels of watermelon genetic resources obtained from the gene bank of Agrobiodiversity Center, Republic of Korea, and discussed the relationships between each. Diverse characteristics were observed among many of the traits, but most of the genetic resources (>90%) were either red or pink-fleshed. Korean originated fruits contained intermediate levels of soluble solid content (SSC) while the USA, Russian, Tajikistan, Turkmenistan, Taiwan, and Uruguay originated fruits had generally the highest levels of soluble solids. The citrulline and arginine contents determined using the High Performance Liquid Chromatography (HPLC) method ranged from 6.9 to 52.1 mg/g (average, 27.3 mg/g) and 1.8 to 21.3 mg/g (average, 9.8 mg/g), respectively. The citrulline content determined using the Citrulline Assay Kit ranged from 6.5 to 42.8 mg/g (average, 27.0 mg/g). Resources with high citrulline and arginine levels contained low SSC, whereas red- and pink-colored flesh samples had less citrulline compared to yellow and orange.


HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 475D-475
Author(s):  
R. Núñez-Elisea ◽  
J.H. Crane ◽  
M.L. Caldeira

Panicles of `Kohala' longan (Dimocarpus longan Lour.) trees often retain more than 250 fruit, which results in small fruit (<10 g) of reduced market value. During 1997 and 1998, we conducted experiments to increase fruit size in commercial groves. Trees flowered and fruited normally in 1997, but very scarcely and late in 1998. In 1997, treatments consisted of panicle pruning (clipping off half of the panicle) and/or removal of entire panicles (50% per tree) when young fruits were 5 or 10 mm in diameter. Control trees were left intact. The number of fruit per panicle varied greatly within trees. Panicles (pruned or intact) with <125 fruit generally developed fruit >15 g (32–33 mm equatorial diameter). Total soluble solid content of mature fruit generally decreased with increasing fruit size. Removing whole panicles did not increase average fruit size in remaining intact panicles, suggesting that panicles were fed primarily by leaves within the same branch. In 1998, treatments consisted of applications of GA3 and/or CPPU (a synthetic cytokinin) when fruits were 6 to 9 mm in diameter. Panicles were not pruned since they generally had <150 fruit. Control panicles were not sprayed. There was no consistent effect of treatments on average fruit weight, and no treatment significantly increased fruit size in relation to controls. These preliminary results indicate that other factors besides current fruit set, such as previous fruit load of a branch, branch position (exposure to sunlight and/or wind, and proximity to major limbs), and the amount/age of leaves, may influence the fruiting potential of individual branches.


2019 ◽  
Vol 14 (7) ◽  
pp. 649-657 ◽  
Author(s):  
Li Li ◽  
Jiemin Li ◽  
Jian Sun ◽  
Ping Yi ◽  
Changbao Li ◽  
...  

Background: Phospholipase D (PLD)is closely related to browning and senescence of postharvest longan fruit. Objective: This study investigated the effects of 2-butanol (a PLD inhibitor) on the expression and regulation of PLD during storage of longan fruit at a low temperature. Methods: Senescence-related quality indices showed that the 2-butanol-treated fruit presented lower pericarp browning index, pulp breakdown index and total soluble solid value than the untreated fruit. Results: The fruit treated by 60 µL/L 2-butanol exhibited the strongest inhibition on senescence, which significantly delayed changes in weight, titratable acidity content, total soluble solid content and ascorbic acid content. This treatment maintained a high level of total phenolic content and caused significant inhibition on pericarp browning and pulp breakdown. Through ELISA method, 60 µL/L 2-butanol treatment also reduced PLD activity. Real-time RT-PCR (RT-qPCR) results showed that PLD mRNA expression level was inhibited by 60 µL/L 2-butanol within 15 days. Western-blotting results further confirmed the differential expression of PLD during storage, and a relatively higher expression for PLD protein was found in control compared to the 2-butanoltreated fruit during 15-d storage. Conclusion: These results provided a scientific basis and reference to further investigating postharvest longan quality maintenance by regulating the PLD gene expression.


Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 449
Author(s):  
Camilo Gutiérrez-Jara ◽  
Cristina Bilbao-Sainz ◽  
Tara McHugh ◽  
Bor-Sen Chiou ◽  
Tina Williams ◽  
...  

The cracking of sweet cherries causes significant crop losses. Sweet cherries (cv. Bing) were coated by electro-spraying with an edible nanoemulsion (NE) of alginate and soybean oil with or without a CaCl2 cross-linker to reduce cracking. Coated sweet cherries were stored at 4 °C for 28 d. The barrier and fruit quality properties and nutritional values of the coated cherries were evaluated and compared with those of uncoated sweet cherries. Sweet cherries coated with NE + CaCl2 increased cracking tolerance by 53% and increased firmness. However, coated sweet cherries exhibited a 10% increase in water loss after 28 d due to decreased resistance to water vapor transfer. Coated sweet cherries showed a higher soluble solid content, titratable acidity, antioxidant capacity, and total soluble phenolic content compared with uncoated sweet cherries. Therefore, the use of the NE + CaCl2 coating on sweet cherries can help reduce cracking and maintain their postharvest quality.


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