Effect of time of harvest on physiological maturity and kenaf (Hibiscus canabinus) seed quality

Saadi, Sk Md Abu Imam; Mondal, Amal Kumar

doi:10.5897/ajps11.163

Cited by 13 publications

(11 citation statements)

References 19 publications

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“…Harvesting crops at early maturity stage usually resulted in yield loss due to high seed moisture content, high percentage of immature seeds and low 1000 seed weight; while delayed harvesting resulted in more seeds were filled and consequently, average seed weight increased [32,33]. Seeds gradually attain viability and vigor during the developmental process as seed dry weight is accumulated during maturity [11]. The increase in dry weight of the seeds towards maturity reflects the accumulation of nonstructural carbohydrates, reducing sugars and fibre, relative to seed moisture content which showed a sharp fall [34].…”

Section: Thousand Seed Massmentioning

confidence: 99%

“…Seed development is the period between fertilization and maximum fresh weight accumulation and seed maturation begins at the end of seed development and continues till harvest [10]. Studies on seed development and physiological maturity become important because seeds should be harvested at proper time to ensure their quality in terms of viability and vigor [11]. Seed quality can be limited by environmental conditions both before and after physiological maturity, the stage of development at which the seed possesses its maximum dry mass [12].…”

mentioning

confidence: 99%

“…Seed quality can be limited by environmental conditions both before and after physiological maturity, the stage of development at which the seed possesses its maximum dry mass [12]. The seed reaches its maximum dry weight at physiological maturity [11]. Since the moisture content of the seed is often too great for mechanical harvesting and threshing at physiological maturity (PM), further desiccation must occur before direct harvesting is possible.…”

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confidence: 99%

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Statistical analysis of the physical properties of varieties of beans (<i>Phaseolus vulgaris</i> L.) influenced by maturity stage

Eboibi

Uguru

2018

Nig. J. Tech.

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Physical properties of post-harvest bean seeds was studied, but the physical properties of bean seeds in response to post flowering (maturity stage) have not been fully studied; therefore, this study is aimed at evaluating the physical properties of two bean varieties (iron and honey) during their maturation stages. The bean seeds were harvested at 15, 20 and 25 days after flowering (DAF), the physical properties (length, width, thickness, average thousand seed mass, size, volume, geometric mean, sphericity, surface area, arithmetic mean, bulk density, true density, porosity, angle of repose, and the static friction coefficient (against plywood, rubber, Formica, galvanized iron, and aluminum surfaces)) in both bean varieties were evaluated. The results showed that maturity stage of the bean seeds significantly (P≤ 0.05) influenced all their physical properties. Over the course of a maturation time, while their porosity and angle of repose decreased, in both bean varieties, other properties were found to increase. The bean seeds true density increased from 817.75 to 1207 kg/m 3 in iron bean, and 774.25 to 1144 kg/m 3 in honey bean; likewise, the bulk density increased from 464.5 to 761.75 kg/m 3 and 544.75 to 867.66 kg/m 3 in the iron and honey bean respectively; porosity decreased from 42.15 to 36.37% in the iron bean and 34.19 to 26.41% in the honey bean. The static coefficient of friction result was; Formica (iron bean, 0.24 to 0.35; honey bean 0.22 to 0.28), aluminum (iron bean 0.31-0.37; honey bean 0.25 to 0.32), galvanized iron (iron bean, 0.35-0.44; honey bean, 0.33 to 0.39), plywood (iron bean, 0.49 to 0.58; honey bean 0.39 to 0.46), and rubber (iron bean 0.55 to 0.61; honey bean 0.43 to 0.50). While the angle of response decreased from 39.62 to 30.73 o in the iron bean and 45.78 to 36.84 o in the honey bean. Furthermore, the results show that the ideal period for harvest, processing and handling of the two bean seeds is 20 to 25 days after anthesis, since the seeds will be having maximum dry weight and higher viability. Data gotten from this result is useful in the design and development of harvesting, handling and processing equipment.

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Section: Thousand Seed Massmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Statistical analysis of the physical properties of varieties of beans (<i>Phaseolus vulgaris</i> L.) influenced by maturity stage

Eboibi

Uguru

2018

Nig. J. Tech.

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“…crude oils mainly for their pharmaceutical applications in the synthesis of drugs and could be either exploited in cosmetic products as a primary ingredient in soap, lotions, and creams manufacturing as well as in cleaning agents for detergents making. [17] The effect of the harvest time and the ripening stages on a variety of plant species has been studied in different levels, chief among them: physiological maturity, [18] phytoconstituents quantity and quality, [19,20] biological activities. [21,22] Several studies dealt with the influence of seasonal harvest on P. atlantica Desf.…”

Section: Introductionmentioning

confidence: 99%

Total Tocopherols, Carotenoids, and Fatty Acids Content Variation of Pistacia atlantica from Different Organs’ Crude Oils and Their Antioxidant Activity during Development Stages

Chelghoum

Guenane

Harrat

et al. 2020

Chemistry & Biodiversity

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The current study investigated the effect of developmental stages on the chemical composition and the antioxidant activity of fifteen crude oil samples obtained from Pistacia atlantica Desf. leaves, galls, and fruits. Twelve fatty acids were detected by GC/FID, linolenic acid (C18 : 3) was the major fatty acid detected in leaves crude oils that registered [41.73 % (P<0.05)] on the last stage. The best content of tocopherols and carotenoids was recorded at the last stage for leaves and galls oils, respectively, with values of [1.530±0.01, 0.52±0.01 (P<0.05) mg α‐tocopherol equivalent/g DW] and [86.60±0.95, 69.15±0.13 (P<0.05) μg β‐carotene equivalent/g DW]. For fruits oils, the content varied depending on the levels of fruits maturation. The results from DPPH, FRAP, and ABTS assays revealed that the antioxidant activity increased with the increasing content of tocopherols and carotenoids in leaves and galls oils during development stages, and varied for fruits oils depending on the ripening stages. Moreover, according to PCA analysis, the best phytoconstituent content and antioxidant activity were attributed to P. atlantica Desf. fruit's crude oils. Also, a strong relationship was found between the antioxidant activity and bioactive phytochemical components, such as tocopherols, carotenoids, and omega‐three fatty acid, which confirmed that P. atlantica Desf. crude oils present a valuable source of natural antioxidant that could be used for pharmaceutical and food industries purposes.

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“…Although these constituents offer many substantial effects in human welfares, the biosynthesis of polyphenolic compounds attributed the biological activities may often modulate by various factors, which include cultivars, genotypes, environmental conditions, such as light intensity, relative humidity, and cultivation practices. Harvesting application as part of the cultivation practices has been known to have a significant role in influencing the quantitative and qualitative aspects in plants, resulting in an increment in growth, yield, and value of crops [ 30 , 31 , 32 , 33 , 34 , 35 ]. It is indeed shown that age-related factor has effectively enhanced the quantity and quality of the plant, specifically in phytochemical content and antioxidant activities in several crops [ 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Alterations in Herbage Yield, Antioxidant Activities, Phytochemical Contents, and Bioactive Compounds of Sabah Snake Grass (Clinacanthus Nutans L.) with Regards to Harvesting Age and Harvesting Frequency

et al. 2020

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Sabah snake grass or Clinacanthus nutans has drawn public interest having significant economic benefits attributable to the presence of phytochemicals and several interesting bioactive constituents that may differ according to harvesting age and harvesting frequency. The current study was aimed to evaluate the effect of harvesting age and harvesting frequency towards herbal yield, antioxidant activities, phytochemicals synthesis, and bioactive compounds of C. nutans. A factorial randomized completely block design with five replications was used to illustrate the relationship between herbal yield, DPPH (2, 2-diphenyl-1-picrylhydrazyl) and ferric reducing antioxidant power (FRAP) assays, total phenolic and flavonoid content affected by harvesting age (week 8, 12, and 16 after transplanting), and harvesting frequency (harvest 1, 2, and 3). The bioactive compounds by HPLC were also determined to describe the interaction effect between both harvesting age and harvesting frequency. The yield, antioxidant activities, and phytochemical contents were gradually increased as the plant grew, with the highest recorded during week 16. However, the synthesis and activities of phytochemicals were reduced in subsequent harvests despite the increment of the herbal yield. All bioactive compounds were found to be influenced insignificantly and significantly by harvesting age and harvesting frequency, respectively, specifically to shaftoside, iso-orientin, and orientin. Among all constituents, shaftoside was the main compound at various harvesting ages and harvesting frequencies. These results indicated that harvesting at week 16 with 1st harvest frequency might enhance the yield while sustaining the high synthesis of polyphenols and antioxidant activities of C. nutans.

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Effect of time of harvest on physiological maturity and kenaf (Hibiscus canabinus) seed quality

Cited by 13 publications

References 19 publications

Statistical analysis of the physical properties of varieties of beans (<i>Phaseolus vulgaris</i> L.) influenced by maturity stage

Statistical analysis of the physical properties of varieties of beans (<i>Phaseolus vulgaris</i> L.) influenced by maturity stage

Total Tocopherols, Carotenoids, and Fatty Acids Content Variation of Pistacia atlantica from Different Organs’ Crude Oils and Their Antioxidant Activity during Development Stages

Alterations in Herbage Yield, Antioxidant Activities, Phytochemical Contents, and Bioactive Compounds of Sabah Snake Grass (Clinacanthus Nutans L.) with Regards to Harvesting Age and Harvesting Frequency

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