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1
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Genetic variability, heritability and genetic advance for yield and yield components in watermelon (Citrullus lanatus Thunb.)

100%
Anburani A., Kannan P., Muthumanickam K.
World News of Natural Sciences
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2019
|
vol. 25
22-30
EN
Field investigation was carried out to study the genetic variability, heritability and genetic advance and the variability studies showed significant differences among the thirty genotypes for all the thirteen characters. Yield per plant was maximum in CL 4 genotype collected from Atchirupakkam in Villupuram district. The characters viz., number of vines per plant, sex ratio, days to first female flowers, node number of first female flower, days to fruit maturity and number of fruits per plant were recorded the maximum in the same genotype. Genetic analysis indicated maximum phenotypic and genotypic coefficient of variation for single fruit weight and 100 seed weight. The characters viz., fruits diameter, flesh thickness, number of fruits per plant and yield per plant, recorded highest estimate of PCV and moderate estimation of GCV. The characters viz., number of seeds per fruits, flesh thickness, number of primary branches and fruit diameter recorded moderate estimate of PCV and GCV. Lower estimation of GCV was observed for sex ratio, fruit length and number of male and female flowers. High heritability (broad sense) was observed for 100 seed weight, number of seeds per fruit, single fruit weight, vine length, fruit diameter, fruit length, flesh thickness, number of male flowers,sex ratio, yield per plant, number of primary branches per plant, number of female flowers and number of fruits per plant. Based on mean performance, CL 4 followed by CL 22 and CL 10 were selected as the best genotypes in watermelon for the costal ecosystem, by virtue of their higher yield combined with desirable component characters.
2
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Profiling and Comparison of Fatty Acids in the Oils from the seeds of egusi melon (Cucumeropsis mannii Naudin) and watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai)

75%
Duru I. A., Maduka T. D.-O.
World News of Natural Sciences
|
2021
|
vol. 37
31-40
EN
The fatty acid profile of vegetable oil from seeds of egusi melon (Cucumeropsis mannii Naudin) and watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) collected from a local market in Imo State, Nigeria, were analyzed using the GC-MS technique. The study revealed the presence of six (6) fatty acids in each seed oil. Four fatty acids and three fatty acid methyl esters were detected. A total of five (5) similar fatty acids (three (3) saturated and two (2) unsaturated) were detected in both oil, and both seed oils contained one fatty acid not detected in the other. The percentage (%) concentration of saturated fatty acids compounds detected in both oil include Pentadecanoic acid methyl ester (EMO: 4.91; WMO: 4.43), Octadecanoic acid (Stearic acid) (EMO: 3.64; WMO: 41.77), and Methyl heptacosanoate (EMO: 39.16; WMO: 1.32) while the (%) concentration of unsaturated fatty acids detected in both oils includes 11-octadecenoic acid, methyl ester, (EMO: 46.05; WMO:46.28) and Oleic acid (EMO: 4.48; WMO: 3.97). Eicosanoic acid, methyl ester was detected at a concentration of 1.77% in Egusi melon seed oil alone while watermelon seed oil detected n-Hexadecanoic acid at a concentration of 2.22%. The fatty acid profiling of both seed oil revealed fatty acid compounds with therapeutic abilities. This study has provided the scientific backing for the therapeutic uses of both oil and also has compared both oil and predicts a future substitution of both oil in future utilization and at the same time influence their acceptability by the consumers.
3
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Determination and correlation of physicochemical properties of aqueous extracts from edible portions of common tropical fruits

63%
Ejiako E. J., Ngozi V. E., Ebele M. S., Wirnkor V. A., Ehirim F.
World News of Natural Sciences
|
2023
|
vol. 47
104-114
EN
The quantity and quality of these constituent may not usually be the same under certain conditions, so fruits sold in Owerri where heavy pollutant abound were analysed, three samples of each water melon, Pawpaw, pineapple and orange fruits were bought from Owerri commercial centre and their juices extracted and stored in screw cap bottles prior to analysis. The physiochemical parameters revealed that fruits were of good quality but showed positive and negative significant relationship correlation ships such as pH-FW (0.958), pH-SG (-0.025), TS-MC (-0.999), TA-FW (-0.987). Vitamin C content ranged from 13.14 ± 0.39 mg/100g to 75.46 ±1.72 mg/100g for water melon and orange respectively. In conclusion, fruits studied showed good quality and a good source of vitamin C and mineral content. Such analysis needs to be carried out periodically to ensure quality and create awareness to the public.
4
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Comparative Nutritional Composition of Selected Medicinal Fruit Seeds

63%
Awotedu O. L., Ogunbamowo P. O., Awotedu B. F., Ariwoola O. S.
World News of Natural Sciences
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2020
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vol. 29
|
issue 3
298-310
EN
Fruits producing medicinal plants are particularly desirable, the seeds produced are considered as waste after the fruits are consumed. This study assessed the nutritional constituents of some fruits seeds by assessing the proximate, minerals and vitamins present in the seeds of Citrullus lanatus (Water melon), Malus pumila (Apple), Annona muricata (Sour sap), Persea americana (Avocado), Terminalia catappa (Almond fruit), and Carica papaya (Pawpaw). The proximate analysis, mineral and vitamin composition of the selected medicinal fruit seeds were investigated using the standard method of analysis. On the proximate composition, protein content ranged from 15.21-34.70%, crude fat: 13.82-33.15%, crude fibre: 6.96-21.71%, ash content: 2.62-5.90%, moisture content: 7.81-20.72% and carbohydrate: 12.19-26.58%; for mineral content, Sodium ranged from 26.2-832 mg/kg, Potassium: 571-4862 mg/kg, Calcium: 194-2070 mg/kg, Magnesium: 28-862 mg/kg, Phosphorus: 104-1070 mg/kg, Iron: 2.53-60.00 mg/kg, Manganese: 2.73-240 mg/kg, Copper: 1.64-73.00 mg/kg and Zinc: 3.42-84.00 mg/kg, while for vitamins, vitamin C (Ascorbic acid) content ranged from 1.26-23.54 mg/100g, vitamin E content ranged from 0.70-1.57 mg/100g; vitamin A (β-carotene) content ranged from not detected-5.61 mg/100g, while vitamin B content ranged from 0.02 mg/100g-2.67 mg/100g. The fruits’ seeds show a considerable amount of vital nutritional chemicals which makes them as good as the fruits and could serve as nutraceutical remedy.
5
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Distribution of selected metals and phytochemicals in seeds and peels extract of watermelon (Citrullus lanatus (Thunb.) Mansf.) in Bayelsa State, Nigeria

63%
Ogbuta A., Ukachuku S., Teke E., Ziriki D.
World News of Natural Sciences
|
2023
|
vol. 49
156-164
EN
The nutritional benefits of agricultural trash and the therapeutic properties of leftover agricultural product parts are still being thoroughly researched in Africa. This investigation looked at the distribution of specific metals and phytochemicals in Bayelsa state, Nigeria, watermelon (Citrullus lanatus) seed and peel samples. Watermelons (Citrullus lanatus) were picked for their seeds and peel samples after being brought from several gardens in Nigeria's Bayelsa state. Ether acetate was used to extract the samples. The extracts were evaluated at various concentrations, including 10 mg/ml, 5 mg/ml, 2.5 mg/ml, 1.25 mg/ml, 0.625 mg/ml, and 0.3125 mg/ml, for phytochemicals. The phytochemical screening of the ethyl acetate extracts of seed and peel samples, revealed the presence of flavonoids, terpenoids, tannins and cardiac glycosides in seed extracts while flavonoids, phenols, terpernoids, cardiac glycosides, carboxylic acids, quinine and xanthoproteins were detected in peel sample. The samples were digested with an aqua regia and analyzed for metals using atomic absorption spectrometry (AAS). The total concentrations of the metals analyzed varied from 51.05 to 58.40 mg/kg, (5.20±54.73), mean concentrations of the individual metals from result showed iron Fe (28.70-32.60 mg/kg), Mn (11.67-14.14 mg/kg), K (0.24-0.25 mg/kg), Zn (7.89 -9.11 mg/kg), Ni (0.01 -0.03 mg/kg), Cu ( 0.42 -0.48 mg/kg), Mg (1.29 -1.47 mg/kg), Ca (0.56 -0.57 mg/kg) and Pb (0.00-0.01 mg/kg). Iron Fe concentrations were predominant in both seed and peel samples of (Citrullus lanatus). The concentrations of metal in seed and peel samples followed this order Fe>Mn > Zn > Mg >Ca>Cu > K > Ni >Pb and the concentrations of Fe and Mn were relatively higher than WHO daily intake permissible limits in Citrullus lanatus.
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