Breeding for Improving Nutritional Qualities and Shelf Life in Vegetable Crops

2018 ◽  
pp. 127-169
Author(s):  
Pritam Kalia ◽  
Shrawan Singh
Keyword(s):  
Shelf Life ◽  
Vegetable Crops ◽  
Nutritional Qualities

scholarly journals Extended Storage of Yellow Pepper Fruits at Suboptimal Temperatures May Alter Their Physical and Nutritional Quality

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1109
Author(s):  
Kumar Lama ◽  
Sharon Alkalai-Tuvia ◽  
Daniel Chalupowicz ◽  
Elazar Fallik
Keyword(s):  
Ascorbic Acid ◽  
Shelf Life ◽  
Nutritional Quality ◽  
Nutrient Content ◽  
Total Phenolic ◽  
Optimum Temperature ◽  
External Quality ◽  
Plastic Packaging ◽  
Nutritional Qualities ◽  
Storage Temperatures

Yellow sweet peppers (Capsicum annuum L. cv. Dinamo) are generally more susceptible than red sweet peppers to physiological and pathological deterioration after harvest. Yellow peppers also fetch higher prices at market. In this study, we examined the external and nutritional quality attributes of yellow pepper fruits stored at suboptimal temperatures of 1.5 and 4 °C for 3 weeks, followed by a 3-day shelf-life simulation. Notably, yellow peppers kept in plastic (Xtend®, Stepac, Tefen, Israel) bags at 4 °C maintained their external quality just as well as peppers stored at the optimum temperature of 7 °C. In addition, nutrient content (namely ascorbic acid) and total phenolic and hydrophilic antioxidant contents were not reduced when the peppers were kept at suboptimal storage temperatures of 4 or 1.5 °C in Xtend® plastic packaging. Thus, the external and nutritional qualities of yellow pepper fruits can be preserved at suboptimal temperatures of 4 °C with Xtend® plastic packaging. This is particularly significant in light of the fact that storage at such temperatures is sometimes used as a quarantine method to eliminate pests on produce imported into Israel.

Storage of root crops at the summer period of cultivation in the conditions of the Moscow region

2021 ◽  
pp. 19-21
Author(s):  
Л.Н. Тимакова ◽  
Л.М. Соколова
Keyword(s):  
Shelf Life ◽  
Storage Period ◽  
Phytopathogenic Fungi ◽  
Moscow Region ◽  
Growing Period ◽  
Federal Research ◽  
Root Crops ◽  
Plastic Bags ◽  
Nutritional Qualities ◽  
Cultivation Technology

Ассортимент потребляемых в зимнее время корнеплодных культур можно значительно расширить за счет включения в рацион питания репы и различных разновидностей редьки. Цель работы – определить оптимальные сроки хранения редьки различного географического происхождения и репы при летнем сроке выращивания. Исследования проводили во ВНИИО – филиале ФГБНУ ФНЦО (Московская область, Раменский район). Посев корнеплодов для хранения – в третьей декаде июля. Технология выращивания общепринятая. Почва опытного участка относится к типу аллювиальных луговых, среднесуглинистая, насыщенная, влагоемкая. Фитопатологическую оценку корнеплодов во время хранения проводили в лаборатории иммунитета отдела селекции и семеноводства ВНИИО – филиала ФГБНУ «Федеральный научный центр овощеводства». Для культивирования фитопатогенных грибов использовали среду Чапека. Корнеплоды хранили в течение 7 месяцев в полиэтиленовых мешках, в хранилище с активным вентилированием при температуре 0,5–1,5 °С, влажности воздуха 95%. Объект исследования: продолжительность периода хранения корнеплодов. Предмет исследования: сорта репы и редьки европейской, китайской и японской. Представлены результаты хранения корнеплодов в динамике, начиная с декабря (через три месяца хранения). Биологические особенности культуры – основное условие срока хранения и максимального сохранения питательных качеств продукции. В результате исследований выявлены оптимальные сроки хранения культур: для редьки европейской он составляет 6–7 месяцев, редьки китайской и репы – 5 месяцев, дайкона – 3 месяца. Установлено, что редька японская или дайкон наиболее восприимчива к грибным заболеваниям во время хранения. The range of root crops consumed in winter can be significantly expanded by including turnips and various varieties of radish in the diet. The purpose of the work is to determine the optimal shelf life of radishes of various geographical origin and turnips with a summer growing period. The research was conducted at the ARRIVG-branch of the FSBSI FSVC (Moscow region, Ramensky district). Sowing for storing root crops was carried out in the third decade of July. The cultivation technology is generally accepted. The soil of the experimental site belongs to the type of alluvial meadow, medium loamy, saturated, moisture-intensive. Phytopathological assessment of root crops during storage was carried out in the immunity laboratory of the Department of Breeding and Seed Production of ARRIVG- branch of the Federal Research Center for Vegetable Growing. Chapek medium was used for the cultivation of phytopathogenic fungi. Root crops were stored for 7 months-in plastic bags, in a storage with active ventilation at a temperature of 0.5–1.5 °C, air humidity of 95%. The object of research: the storage period of root crops. Subject of research: varieties of turnips and radishes of European, Chinese and Japanese. The results of root crop storage in dynamics are presented: starting from December (after 3 months of storage). The biological features of the culture are the main condition for the shelf life and maximum preservation of the nutritional qualities of the products. As a result of the research, the optimal shelf life of crops was revealed: for European radish, it is 6–7 months, for Chinese radish and turnip-5 months, for daikon-3 months. It was found that Japanese radish or daikon is most susceptible to fungal diseases during storage.

scholarly journals Stakeholders’ Perception and Preferences of Post-harvest Quality Traits of Tomato in Ghana

2018 ◽  
Vol 7 (3) ◽  
pp. 93
Author(s):  
Michael Osei ◽  
Agyemang Danquah ◽  
Essie Blay ◽  
Eric Danquah ◽  
Hans Adu-Dapaah
Keyword(s):  
Shelf Life ◽  
Value Chain ◽  
Crop Improvement ◽  
Food Preferences ◽  
End Users ◽  
Quality Traits ◽  
Vegetable Crops ◽  
Data Set ◽  
Tomato Production ◽  
Important Quality

The high levels of tomato consumption coupled with wide production levels in Ghana make the crop economically viable. Food preferences vary among individuals and geographical locations. Traits to select during crop improvement therefore, depend on the target beneficiaries. Breeders sometimes fail to consider preferences of end users probably because they are oblivious of them. This study used Participatory Rural Appraisal (PRA) and surveys to identify preferences and perceptions of end users in tomato value chain, for making proper breeding choices according to the information collected. The strategy employed for this research was descriptive survey. The target population included tomato farmers, market players and consumers. A multi-stage sampling was used to select the study sample. More than half (57.3%) of the respondents had been involved in tomato production for over 10 years. Sixteen variables were discussed with each group. The first three principal components (PCs) with Eigen values greater than 1.0 together explained 100% of total variation in the data set. Scores for ranking popular vegetable and ranking causes for poor shelf life were not significantly associated with any of the components. The Focus Group Discussion (FGDs) also established that, seven main vegetable crops were cultivated and produced by the communities and ranked tomato as number one. Similarly, six important quality traits of tomato were mentioned by stakeholders as their favorite. Respondents showed extreme preferences for firmness and shelf life as the most important quality traits of tomato. Seventy-seven-point five percent (77.5%) of the consumers use tomatoes every day in their food preparation. The study revealed stakeholders’ desire and plea for firmness and extended shelf life of tomato fruits in Ghana. Consequently, the survey validated the need to regulate tomato breeding goals to develop high yielding tomatoes with improved fruit quality and prolonged shelf life.

scholarly journals Effect of Chitosan Coating on Physiological Responses and Nutritional Qualities of Tomato Fruits during Postharvest Storage

2019 ◽  
pp. 1-11
Author(s):  
Naznin Sultana ◽  
H. M. Zakir ◽  
M. A. Parvin ◽  
S. Sharmin ◽  
H. P. Seal
Keyword(s):  
Weight Loss ◽  
Shelf Life ◽  
Room Temperature ◽  
Physiological Responses ◽  
Postharvest Storage ◽  
Tomato Fruits ◽  
Chitosan Coating ◽  
Study Results ◽  
Fruit Samples ◽  
Nutritional Qualities

This experiment was conducted to evaluate the effect of chitosan coating on physiological responses and nutritional qualities of tomato fruits at postharvest storage. There were four treatments of chitosan viz. T0 (control), T1 (0.10%), T2 (0.20%) and T3 (0.30%), and two storage conditions viz. in refrigerator (4°C) and room temperature (≈23-25°C). The matured light yellow tomato fruit samples were collected at 10, 20, 30 and 50 days after postharvest storage to assess physiological parameters viz. shelf life and weight loss as well as to determine lycopene and mineral constituents viz. Ca, Mg, P, S, Na and K. The mean weight loss of tomato fruits were 0.64, 1.28, 1.59 and 2.28% at 4°C, while it was 0.88, 1.84, 2.60 and 4.80% at room temperature at 10, 20, 30 and 50 days after postharvest storage, respectively. The shelf life of tomato fruits ranged between 58.3-100.0, 50.0-100.0, 33.3-75.0 and 16.7-66.8% at 4°C, while the ranges were 66.8-100.0, 50.0-100.0, 33.3-75.0 and 0.0-41.8% at room temperature at 10, 20, 30 and 50 days after postharvest storage, respectively. As regards to weight loss and shelf life, the study results inferred that chitosan coating with 0.2% solution is useful at postharvest storage of fruits. The study results revealed that storage temperatures (4°C and ≈23-25°C) had no effect on the total contents of different mineral element of tomato fruits but lycopene content reduced almost twice at refrigerated condition. On the other hand, the effect of chitosan coating on Ca, Mg, P, S, Na and K contents of tomato fruits at different days after postharvest storage were highly significant at both conditions. Finally, the study results concluded that 0.2% chitosan based coatings in tomato fruits proved to extend the shelf life by decreasing the decay incidence and weight loss, and refrigerated condition is better than that of room temperature.

Germplasm Development and Innovation of High Quality Edible Pumpkin: Halixiang NO.1.

2012 ◽  
Vol 178-181 ◽  
pp. 947-949
Author(s):  
Yu Rong Dai ◽  
Hong Xie ◽  
Chang Zheng Du
Keyword(s):  
Shelf Life ◽  
Quality Characteristics ◽  
High Yield ◽  
Vegetable Crops ◽  
High Quality ◽  
Field Management

Pumpkin is one of the major vegetable crops in cucurbit family. Due to its easy cultivation, high yield, long shelf life and abundant nutriments, pumpkin is very popular in China. In this paper, we study on the germplasm development and innovation of high quality edible pumpkin: Halixiang NO.1. We also discussed the species quality, characteristics and field management.

Ecological testing of samples of onion of domestic and foreign selection in annual culture in the conditions of the Moscow region

2020 ◽  
pp. 37-40
Author(s):  
О.Р. Давлетбаева ◽  
М.Г. Ибрагимбеков ◽  
А.Н. Ховрин ◽  
А.А. Рубцов
Keyword(s):  
Matter Content ◽  
Morphological Description ◽  
Dry Matter Content ◽  
Vegetable Crops ◽  
F1 Hybrid ◽  
Environmental Testing ◽  
Annual Crop ◽  
Nutritional Qualities ◽  
Economically Valuable Traits ◽  
Wax Coating

Посевы лука репчатого занимают более 95% площади, находящейся под всеми видами лука. Из-за высоких вкусовых и питательных качеств лук репчатый – одна из самых распространенных овощных культур в нашей стране – он занимает 64 тыс. га и располагается на третьем месте, уступая капусте и томату. Увеличение объемов производства лука репчатого происходит не только за счет увеличения площадей, занимаемых культурой, но и за счет роста урожайности. Это достигается внедрением в производство новых высокопродуктивных сортов и гибридов, повышением общей культуры земледелия и уровня технологии возделывания. Наряду с созданием гетерозисных гибридов в настоявшее время продолжается и селекция сортов, которые демонстрируют высокие показатели при выращивании в однолетней культуре. Цель исследований: провести испытание образцов репчатого лука разного географического происхождения в однолетней культуре; оценить по основным хозяйственно ценным признакам и выделить в качестве генисточников наиболее адаптивные по основным параметрам. Экологическое испытание 18 образцов репчатого лука отечественной и зарубежной селекции проводили в 2019–2020 годах на опытном участке отдела селекции и семеноводства ВНИИО – филиала ФГБНУ «Федеральный научный центр овощеводства» с постановкой опытов в открытом грунте. В течение вегетационного периода проводили фенологические, биометрические измерения и морфологическое описание образцов согласно методическим указаниям «Изучение и поддержание в живом виде мировой коллекции лука и чеснока». В качестве стандарта использовали сорт Форвард отечественной селекции и зарубежный гибрид F1 Премито. Интенсивность воскового налета на образцах оценивали визуально. Выделены образцы в качестве генисточников хозяйственно ценных признаков: по округлой и округло-плоской форме луковицы выделено 13 образцов, по желто-коричневой окраске сухих покровных чешуй выделено 6 образцов, по содержанию сухого вещества выше 11,0% выделено 7 образцов. Onion crops cover more than 95% of the area under all types of onions. Due to its high taste and nutritional qualities, it is one of the most common vegetable crops in our country-it occupies 64 thousand hectares and is in third place, behind cabbage and tomato. The increase in onion production is not only due to an increase in the area occupied by the crop, but also due to an increase in yield. This is achieved by introducing new highly productive varieties and hybrids into production, increasing the overall culture of agriculture and the level of cultivation technology. Along with the creation of heterotic hybrids, the selection of varieties that show high rates when grown in an annual crop is currently continuing. The purpose of the research: to test samples of onions of different geographical origin in an annual crop; to evaluate the main economically valuable characteristics and to identify the most adaptive sources for the main parameters. Environmental testing of 18 samples of onions of domestic and foreign selection was carried out in 2019–2020 at the experimental site of the Department of selection and seed production of ARRIVG – branch of FSBSI FSVC research center for vegetable growing with the staging of experiments in the open ground. During the growing season, phenological, biometric measurements and morphological description of samples were performed in accordance with the guidelines «Study and maintenance of the world collection of onions and garlic». As a standard, the Forward variety of domestic selection and the foreign F1 hybrid Premito were used. The intensity of wax coating on the samples was assessed visually. Samples were identified as sources of economically valuable traits: 13 samples were identified for the round and round-flat shape of the bulb, 6 samples were identified for the yellow-brown color of dry integumentary scales, and 7 samples were identified for the dry matter content above 11.0%.

scholarly journals Modified atmosphere packaging of capsicum for extending shelf life under coolbot condition

2021 ◽  
Vol 4 (1) ◽  
pp. 120-129
Author(s):  
Sujata Poudel ◽  
Ishwori Prasad Gautam ◽  
Dipendra Ghimire ◽  
Suprabha Pandey ◽  
Mira Dhakal ◽  
...  
Keyword(s):  
Shelf Life ◽  
Block Design ◽  
Modified Atmosphere Packaging ◽  
Health Benefit ◽  
Ascorbic Acid Content ◽  
Postharvest Quality ◽  
Research Centre ◽  
Mature Stage ◽  
Modified Atmosphere ◽  
Vegetable Crops

Capsicum is one of the high value vegetable crops in Nepal. Its demand in kitchen is increasing due to urbanization and increased awareness on its health benefit. Its commercial cultivation has been started in protected as well as open field conditions. It fetches higher price in market but has very short storage life under ordinary storage condition. An experiment was carried out to evaluate the modified atmosphere packaging (MAP) on extension of shelf-life of capsicum fruit. Fruit were harvested at full mature stage with smooth and shiny appearance from farmer's field grown under protected condition at Chitwan, Nepal. The fruits were brought to postharvest laboratory of National Horticulture Research Centre, pre-cooled for 3-4 hours, cleaned with muslin cloth and packed in 25 micron Low Density Polyethylene (LDPE) packaging with different number of pinhole sized perforations viz. without pinholes, eight pinholes, sixteen pinholes, twenty four pinholes and control (without MAP). The study was conducted in completely randomized block design with five treatments and four replications. Fruits were kept at coolbot storage (9.8+2 ºC, 86+5% RH) till 30 days and analyzed for various postharvest physical, chemical and physiological parameters at every 10, 20 and 30 days of storage. The result showed that LDPE packaging influenced on reduction of physiological loss in weight (PLW), spoilage loss, ascorbic acid content, TA, freshness, firmness and shelf life. The modified atmosphere packaging (MAP) without pinholes showed the minimum PWL (1.71%) and the optimum fruit freshness (4.76) but the spoilage loss was the maximum (14%). Among the packaging, MAP with 8 pinholes maintained majority of postharvest quality retention with reduced physiological loss in weight (4.15 %), freshness (4.5) and spoilage loss (2%).

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