Plant Productions

Effect of Different Concentrations of Spermidine at Different Harvesting Times on the Quality of Apricot Fruits ”Shahroudi“ Cultivar

Jassim Taha; Jafar Hajilou

Volume 43, Issue 3 , November 2020, , Pages 409-418

https://doi.org/10.22055/ppd.2019.28168.1703

Abstract

Abstract Background and Objectives Apricot is one of the most important horticultural crops because of its attractive taste and nutritive value. Different cultivars of ... Read More Abstract Background and Objectives Apricot is one of the most important horticultural crops because of its attractive taste and nutritive value. Different cultivars of apricot contain highly variable content of ascorbic acid, cartenoids, and phenolic compound,which are good sourecs of antioxidant. Fuit quality is an important trait for concumers and producers. The purpose of this work was to estimate the effects of pre-harvest application of polyamines on quality characteristics of apricot fruits at the end of fruit ripening process. Materials and Methods The experiment was carried out as a factorial based on the randomized complete block design (three concentrations of spermidine at three harvesting time) with four replications. The selected branches of trees were sprayed as a pre-harvesting application method by three concentrations of spermidine (0, 2, and 3 mili molar) 7 days before commercial harvesting time. Fruits were harvested during harvesting times (3 days interval) and then some fruit characteristics such as total soluble solids (TSS), total ccidity (TA), vitamin C, firmness of fruit tissue, pH of fruit extract, total phenol, flavonoid, and total antioxidant capacity were measured in the laboratory of flower biology and fruit growth development at the department of horticulture, faculty of agiculture, university of Tabriz. Results The results showed that the effects of different harvesting times were significant regarding all traits. The best results were observed in 3 mM spermidine and this treatment improved all the measured characteristics of fruit. The highest value of total antioxidant capacity (3.01%), vitamin C (3.29%), and fruit firmness (3.27%) were found in 3 mM spermidin at three harvesting times. In some characteristics such as TSS and TA, there was no significant difference between 2 and 3 mM spermidine, but among treated and non-treated fruit a full significant difference was observed. We assume that the second harvesting time can be the best harvesting time regarding fruit quality parameters. During fruit ripening, the amount of TSS and TA increased, while firmness, total phenolic, and flavonoids compounds and total antioxidant capacity decreased gradually. Discussion Fruit physicochemical properties are very important for understanding the product behaviour during the harvesting, transporting, packaging, and storing of fruit crops. The results of this study showed that the pre-harvesting application of polyamines delayed the ripening and increased the quality of fruit during the different harvestings times.

Investigation of Genetic diversity of RazaviKhorasan Province Local Apple (Maluscommunis L.) Genotypes Using Morphological and Pomological Characters

A. Mokhtarian; A. Asgharzadeh; E. Ganji Moghaddam; S. Khavari Khorasani4; H. Hamidi

Volume 39, Issue 1 , June 2016, , Pages 65-78

https://doi.org/10.22055/ppd.2016.12042

Abstract

Background and Objectives The cultivated apple, Malusdomestica, belongs to the Rosaceae Family, and the subfamily of Pomoideae. Apples are adaptable to various climates, but can be ... Read More Background and Objectives The cultivated apple, Malusdomestica, belongs to the Rosaceae Family, and the subfamily of Pomoideae. Apples are adaptable to various climates, but can be considered best adapted to the cool temperate zone from about 35-50 degrees latitude. Khorasan Razavi has a large and diverse genetic resource of apple trees. There fore, identification, collection and evaluation of these genotypes are necessary to plan future research programs. This study was conducted with the purpose of investigating 12 different genotypes of local apple trees in Khorasan Razanvi province by using national guidlines for conducting test of Distinctive, Uniformity and Stability (DUS). Materials and methods This investigation was carried out in the apple orchad collection located in Torogh station of Khorasan Razavi Agriculture and Natural Resource Research Center during 2010-2012. In this study, 12 local apple genotypes including Torbati, Khojeh Hesar, OghazShirvan, Alimoridovom, Kompoti, Kojeh Torbat, Arbabi Bojnord, Sheykh Ahmad Tabriz, Morabaye, Abasi, Sheykh Amiri, Golmakani were evaluated based on a randomized complete block (RCBD) with 3 replications. The morphological and fruit pomological traits were measured in each genotype. The evaluated characters were firmness, width and depth of eye basin, width and depth of stalk cavity, stalk length and thickness, fruit length, width, yield and weight, flower diameter, peduncle length, leaf blade length and width, length of internodes, one-year-old shoot growth and one-year-old shoot diameter. Data were analyzed using MSTATC and Mini-tab software. The analysis of variance on test data and comparison with the middle of the Duncan test were performed at the 5% level. Results The results of ANOVA showed significant differences between apple genotypes; that is, Golmakani and Morabaye genotypes with 181.67 and 7.1 g fruit weight had the largest and smallest fruit weight, respectively. The mean comparision indicated that vegetative characteristics differed significantly among genotypes, so that the length, blade width, and thickness of annual branch were higher in Oghaz Shirvan genotype than other genotypes. Also, the longest internode length and annual branch growth beloged to Golmakani genotype. The coefficient of correlation analysis among different measured traits showed positiveand significant correlations between fruitdiameter and fruit length, fruit weight, eye bezel width, brew bezel width, flower diameter. In addition, there were strong positive and significant correlations between fruit yield and fruitdiameter and fruit weight. Fruit yield did not show a significant correlation with other traits. Cluster analysis with Ward method classified genotypes to 5 clusters, including very early and early ripening (Torbati, KhojehHesar, Alimouridovom, Khojeh Torbat, OghazShirvan, Sheykh Ahmad Tabriz and Morabaye), midripenning (Kompoti and Arbabi Bojnourd), late ripening (Abasi and Sheykh Amiri Shirvan) and very late ripening (Golmakani). Discussion In general, the present results showed that Kompoti genotype is recommended for mid season regions due to low variation in mid mature ripening genotypes, and Morabaye is suitable for stock because of its small fruits and low vegetative growths.

Effects of harvest time and packing method on fruit quality and Cold-Storage duration of "Gorban Maragheh" apricot cultivar

M. Zarrinbal; A. Dabbagh Mohammadinasab; R. Rasouli Pirouzian

Volume 36, Issue 1 , June 2013, , Pages 1-11

Abstract

Apricot because of its high respiration rate and rapid ripening process has short storage life and so should be marketed immediately after harvest. Harvesting of apricot in suitable ... Read More

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Keywords = Harvesting time

Effect of Different Concentrations of Spermidine at Different Harvesting Times on the Quality of Apricot Fruits ”Shahroudi“ Cultivar

Abstract

Investigation of Genetic diversity of RazaviKhorasan Province Local Apple (Maluscommunis L.) Genotypes Using Morphological and Pomological Characters

Abstract

Effects of harvest time and packing method on fruit quality and Cold-Storage duration of "Gorban Maragheh" apricot cultivar

Abstract