Methods to determine solidity and dry matter content of onions (Allium cepa L.)

Euphytica ◽  
1973 ◽  
Vol 22 (1) ◽  
pp. 39-47 ◽  
Author(s):  
M. Nieuwhof ◽  
J. W. De Bruyn ◽  
Frieda Garretsen
Keyword(s):  
Allium Cepa ◽  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Content ◽  
Allium Cepa L

scholarly journals Comparison of the ability of fifteen onion (Allium cepa L.) cultivars to accumulate nitrates

2014 ◽  
Vol 67 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Renata Wojciechowska ◽  
Anna Kołton
Keyword(s):  
Allium Cepa ◽  
Negative Correlation ◽  
Dry Matter ◽  
Significant Negative Correlation ◽  
Matter Content ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Long Day ◽  
Allium Cepa L ◽  
The University

<p>The aim of a two-year study was to characterise selected <em>Allium cepa </em>L. genotypes with regard to their ability to accumulate nitrates in bulbs as well as to search for a possible relation between NO<sub>3</sub><sup>-</sup> concentration and dry matter content. Fifteen cultivars of edible onion, mostly of long-day genotype with different growing periods, bulb size and skin colour, were taken for the experiment. Seeds of particular cultivars were obtained from the following seed companies: Spójnia Nochowo (‘Labrador’, ‘Takstar F<sub>1</sub>’,‘Tęcza’, ‘Warna’, ‘Zorza’), Polan (‘Polanowska’, ‘Topolska’), PlantiCo Gołębiew (‘Alibaba’, ‘Efekt’, ‘Kristine’, ‘Niagara F<sub>1</sub>’),and PlantiCo Zielonki (‘Bila’, ‘Irka’, ‘Wenta’, ‘Zeta’). Plants produced from seedlings were grown in the experimental field of the University of Agriculture in Kraków. After crop harvesting and additional drying, nitrate and dry matter content in bulbs of all cultivars were measured.</p><p>The following cultivars: ‘Efekt’, ‘Labrador’ and red-skinned ‘Wenta’, were characterized by the lowest ability to accumulate NO<sub>3</sub><sup>-</sup> in bulbs. The highest nitrate content was noted in bulbs of ‘Takstar F<sub>1</sub>’ (a very early-season cultivar), followed by ‘Bila’ and ‘Tęcza’. A weak, yet statistically significant negative correlation between nitrate and dry matter content was observed. The highest dry matter content was determined in bulbs of white-skinned ‘Alibaba’, while the lowest – in brown-skinned ‘Labrador’.</p>

scholarly journals PRODUÇÃO E PÓS-COLHEITA DE DUAS CULTIVARES DE CEBOLA EM FUNÇÃO DA AGUA NO SOLO

Irriga ◽  
2016 ◽  
Vol 21 (4) ◽  
pp. 697-710
Author(s):  
Renato Carvalho Vilas Boas ◽  
Geraldo Magela Pereira ◽  
Joaquim Alves Lima Junior ◽  
Cândido Ferreira Oliveira Neto ◽  
Andre Luiz Pereira Silva
Keyword(s):  
Soil Water ◽  
Allium Cepa ◽  
Water Pressure ◽  
Matter Content ◽  
Dry Matter Content ◽  
Trickle Irrigation ◽  
Average Mass ◽  
Post Harvest ◽  
Soil Water Tension ◽  
Allium Cepa L

 PRODUÇÃO E PÓS-COLHEITA DE DUAS CULTIVARES DE CEBOLA EM FUNÇÃO DA AGUA NO SOLO  RENATO CARVALHO VILAS BOAS1; GERALDO MAGELA PEREIRA2; JOAQUIM ALVES DE LIMA JUNIOR3; CÂNDIDO FERREIRA OLIVEIRA NETO4 E ANDRE LUIZ PEREIRA SILVA5 1Engº Agrícola, Doutor, Departamento de Engenharia Agrícola-DEG/Universidade Federal de Lavras - UFLA/Lavras – MG, Fone: (35) 38291389, [email protected]º Agrícola, Prof. Doutor, Departamento de Engenharia Agrícola-DEG/Universidade Federal de Lavras -UFLA/Lavras – MG, Fone: (35) 38291389, [email protected]º Agrônomo, Prof. Doutor, Universidade Federal Rural da Amazônia - UFRA/Campus Capanema – PA, Fone: (91) 98160-6563, [email protected]º Agrônomo, Prof. Doutor, Universidade Federal Rural da Amazônia - UFRA/Campus Belém – PA, Fone:(91) 99148-7454, [email protected]º Agrônomo, Doutor, Universidade Estadual Paulista –UNESP/Jaboticabal – SP, Fone: (91) 98345-4940, [email protected]  1 RESUMO Objetivou-se, com este trabalho, avaliar o efeito de tensões da água no solo sobre a produção, classificação, teor de matéria seca e perda de massa de bulbos comerciais de duas cultivares de cebola, irrigadas por gotejamento. O experimento foi conduzido na área experimental do Departamento de Agricultura da Universidade Federal de Lavras com delineamento experimental em blocos casualizados, em esquema fatorial 2 x 6, com quatro repetições. Os tratamentos constituíram-se de duas cultivares de cebola, cultivar híbrida Optima F1 e cultivar não  híbrida Alfa Tropical, e seis tensões da água no solo, 15, 25, 35, 45, 60 e 75 kPa. Com os resultados concluiu-se que o híbrido Optima F1 apresentou melhores respostas com relação às seguintes características analisadas: produtividade de bulbos comerciais e massa média de bulbos comerciais. A cultivar Alfa apresentou maior teor de matéria seca e maior perda de massa durante o período de pós-colheita. Considerando o intervalo estudado (15 a 75 kPa), em ambas as cultivares deve-se irrigar no momento em que a tensão da água no solo estiver em torno de 15 kPa, na profundidade de 0,15 m, visando à obtenção de plantas mais produtivas, bulbos maiores e maior massa média de bulbos comerciais. Palavras-chave: Allium cepa L., irrigação localizada, tensão da água no solo  VILAS BOAS,R. C; PEREIRA, G. M.; LIMA JUNIOR, J. A.; OLIVEIRA NETO, C. F. E SILVA, A. L. P. PRODUCTION AND POST- HARVEST OF TWO ONION CULTIVARS IN FUNCTION OF SOIL WATER  2 ABSTRACT This work aimed at assessing the effect of different water tensions in soil on the development and production of two onion cultivars irrigated by drip system. The experiment was carried out in the experimental area of DAG/UFLA, from June to October 2008. The experimental design used was randomized block in factorial scheme 2 x 6, with four repetitions. The treatments comprised two onion cultivars, the hybrid Optima F1 and the non hybrid Alfa Tropical and six water tensions in the soil, i.e., 15, 25, 35, 45, 60 and 75 kPa.      The Optima Hybrid F1 presented the best answers regarding the following characteristics: yield of commercial bulbs and average mass of commercial bulbs . The cultivar Alfa showed higher dry matter content and increased mass loss during the post- harvest period. Considering the range studied ( 15 to 75 kPa) both cultivars should be irrigated when the water pressure in the soil is about 15 kPa at a depth of 0.15 m, in order to obtain more productive plants, larger bulbs and highest average mass of commercial bulbs . Keywords: Allium cepa L., trickle irrigation, soil water tension  

scholarly journals Mode of inheritance of dry matter content in onion (Allium cepa L.) bulb

Genetika ◽  
2011 ◽  
Vol 43 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Nenad Pavlovic ◽  
Dejan Cvikic ◽  
Jasmina Zdravkovic ◽  
Мirjana Mijatovic ◽  
Milka Brdar-Jokanovic
Keyword(s):  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Content ◽  
Vegetable Crops ◽  
Inheritance Pattern ◽  
F1 Hybrid ◽  
Combining Abilities ◽  
Allium Cepa L ◽  
F2 Generation ◽  
Generation Offspring

Onion dry matter content is very important in terms of processing. The study was undertaken in order to investigate dry matter content inheritance pattern in fresh onion bulb. Five divergent onion genotypes, originating from different geographical areas, have been crossed. Full diallel crossing method (without reciprocals) was applied in order to obtain F1 and F2 generation offspring. Field trial including parents and F1 and F2 hybrids was performed at the Institute for Vegetable Crops experimental plot, Smederevska Palanka. The trial was conducted in randomized blocks, with five replications. Intermediate inheritance pattern prevailed for both F1 and F2 generation. Additive genetic component value was higher than dominant for both F1 and F2 generation, which implies additive effect of genes. Hybrid combination PR x BB was characterized by the highest heterosis value (11.85%). Better general combining abilities were confirmed for three lines in comparison with other lines, whereas special combining abilities were significant for one F1 hybrid. Neither general nor special combining abilities were significant for F2 generation.

scholarly journals Antiplatelet Activity is Positively Correlated with Pungency and Solids in Onion (Allium cepa L.)

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 769A-769
Author(s):  
M. Kopelberg ◽  
I.L. Goldman ◽  
J.E.P. Debaene ◽  
B.S. Schwartz
Keyword(s):  
Allium Cepa ◽  
Matter Content ◽  
Organosulfur Compounds ◽  
Dry Matter Content ◽  
Antiplatelet Activity ◽  
Medicinal Value ◽  
Allium Cepa L ◽  
Onion Cultivar ◽  
Positive Correlations ◽  
The Relationship

Onion (Allium cepa L.) and other vegetable Alliums have long been recognized for the antiplatelet properties. Consumers may benefit from the medicinal value of onions because they are commonly eaten raw in salads and the antiplatelet factor is destroyed by heat. Recent work indicates antiplatelet activity in Allium sp. may be due to the presence of native organosulfur compounds. The concentration of organosulfur compounds correlates positively with pungency, varies with onion cultivar, and is influenced by environmental factors. Bulb dry matter content, or solids, is positively correlated with pungency. Because antiplatelet activity may also be based on the activity of organosulfur compounds, it is possible these three factors are significantly correlated. The objective of this investigation was to examine the relationship among pungency, solids, and antiplatelet activity in four diverse onion genotypes. Replicated trials consisting of two mild and two pungent genotypes were conducted at four locations in 1994. Onion bulbs were harvested and analyzed for all three traits. Results from this investigation indicate significant positive correlations between antiplatelet activity, pungency, and solids in onion.

Optimum harvest date of maize for biogas and silage purposes

2009 ◽  
Vol 57 (2) ◽  
pp. 119-125
Author(s):  
G. Hadi
Keyword(s):  
Dry Matter ◽  
Biogas Production ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Dry Mass ◽  
Matter Content ◽  
Harvest Date ◽  
Dry Matter Content ◽  
Dry Matter Yield ◽  
Vegetative Organs

The dry matter and moisture contents of the aboveground vegetative organs and kernels of four maize hybrids were studied in Martonvásár at five harvest dates, with four replications per hybrid. The dry matter yield per hectare of the kernels and other plant organs were investigated in order to obtain data on the optimum date of harvest for the purposes of biogas and silage production.It was found that the dry mass of the aboveground vegetative organs, both individually and in total, did not increase after silking. During the last third of the ripening period, however, a significant reduction in the dry matter content was sometimes observed as a function of the length of the vegetation period. The data suggest that, with the exception of extreme weather conditions or an extremely long vegetation period, the maximum dry matter yield could be expected to range from 22–42%, depending on the vegetation period of the variety. The harvest date should be chosen to give a kernel moisture content of above 35% for biogas production and below 35% for silage production. In this phenophase most varieties mature when the stalks are still green, so it is unlikely that transport costs can be reduced by waiting for the vegetative mass to dry.

Persistence of modern varieties and hybrids of carrots and its dependence on the biochemical composition

2020 ◽  
pp. 16-19
Author(s):  
Е.В. Янченко
Keyword(s):  
Botrytis Cinerea ◽  
Sclerotinia Sclerotiorum ◽  
Dry Matter ◽  
Inverse Correlation ◽  
Dry Weight ◽  
Matter Content ◽  
White Rot ◽  
Dry Matter Content ◽  
Important Indicator ◽  
Modern Varieties

Цель исследований – дать оценку сохраняемости и болезнеустойчивости современных сортов и гибридов моркови столовой и определить корреляционные зависимости влияния биохимических показателей качества на сохраняемость и степень поражения моркови столовой различными видами болезней в процессе хранения. Исследования проводились в 2011–2016 годах во ВНИИО – филиале ФГБНУ ФНЦО по общепринятым методикам. В биохимической лаборатории отдела земледелия и агрохимии содержание сухого вещества определяли высушиванием до абсолютно сухого веса, общего сахара – по Бертрану, аскорбиновой кислоты – по Мурри, нитраты – ионоселективным методом. При характеристике моркови столовой важнейший показатель, определяющий его качество – количество сухого вещества и сахаров. В процессе хранения были выявлены следующие болезни моркови: серая гниль (Botrytis cinerea Pers. ex Fr.), белая гниль (Sclerotinia sclerotiorum (Lib.)), белая парша (Rhizoctonia carotae Rad.), альтернариоз (Alternaria radicina M., Dr. et E.). В большей степени сортообразцы моркови столовой поражались серой гнилью. Лучшими по сохраняемости сортообразцами были Корсар (94,6%), F1Берлин (94,5%), Берликум Роял (94,1%) и F1 Звезда (94%). Сохраняемость у зарубежных сортов и гибридов моркови столовой была немного выше, чем у отечественных (на 0,4%) как за счет меньшей величины убыли массы (6,3% против 6,4%), так и потерь от болезней (1,6% против 1,9%). Сохраняемость корнеплодов моркови находится в прямой корреляционной зависимости от содержания сухого вещества (r=+0,41), каротиноидов (r=+0,39), моносахаров (r­=+0,30) и суммы сахаров (r=+0,27). Проявление серой гнили находится в обратной корреляционной связи с содержанием сухого вещества и каротиноидов (r=-0,37 и r=-0,35 соответственно), белой парши – в прямой корреляции с содержанием сухого вещества , моносахаров и дисахаров (r= +0,21; r= +0,39; r= -0,41 соответственно), белой гнили в обратной корреляционной связи с содержанием сухого вещества, моносахаров и дисахаров. The purpose of the research is to assess the persistence and disease resistance of modern varieties and hybrids of carrots and to determine the correlation between the influence of biochemical quality indicators on the persistence and degree of damage to carrots by various types of diseases during storage. The research was conducted in 2011–2016 at ARRIVG – branch of FSBSI FSVC, according to generally accepted methods. In the biochemical laboratory of the Department of Agriculture and Agrochemistry, the dry matter content was determined by drying to absolutely dry weight, total sugar – by Bertran, ascorbic acid – by Murri, nitrates – by the ion-selective method. When describing carrots, the most important indicator that determines its quality is the amount of dry matter and sugars. During storage, the following diseases of carrots were detected: gray rot (Botrytis cinerea Pers. ex Fr.), white rot (Sclerotinia sclerotiorum (Lib.), white scab (Rhizoctonia carotae Rad.), alternariasis (Alternaria radicina M., Dr. et E.). To a greater extent, varieties of table carrots were affected by gray rot. The best preserved varieties were Corsar (94.6%), F1 Berlin (94.5%), Berlicum Royal (94.1%) and F1 Zvezda (94%). The persistence of foreign varieties and hybrids of table carrots was slightly higher than that of domestic ones by 0.4%. both due to a smaller amount of weight loss (6.3% vs. 6.4%) and losses from diseases (1.6% vs. 1.9%). The persistence of carrot root crops is directly correlated with the content of dry matter (r=+0.41), carotenoids (r=+0.39), monosaccharides (r=+0.30) and the amount of sugars (r=+0.27). The manifestation of gray rot is in inverse correlation with the content of dry matter and carotenoids (r=-0.37 and r=-0.35, respectively), white scab is in direct correlation with the content of dry matter (r= +0.21; r= +0.39; r= –0.41, respectively), white rot is in inverse correlation with the content of dry matter, monosaccharides and disaccharides.

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