Research paper on sunflower seed. Internal morphology and germination of sunflower seeds

One advantage of this high oleic acid sunflower oil is its higher degree of oxidative stability, which is desirable for frying purposes, refining and storage compared to oils low in oleic acid [ 19 ]. Sunflower seeds when combined with wheat-based breads also significantly increase the quantity and quality of protein in bread [ 12 ]. Through X-ray analysis, it is possible to measure the internal parts of seeds and calculate embryo size; the latter can be defined by the degree of development of the embryo and the free space in the internal seed cavity Marcos-Filho et al.

Internal morphology and germination of sunflower seeds

Thus, seeds may occur at different maturity stages during harvest and, consequently, there may be differences in their internal morphology, with probable consequences for the physiological potential of seeds. Evaluation of mechanical damages in seeds of maize Zea mays L. Nutritional value of sunflower seed The common sunflower seed, grown and consumed worldwide, supplies a multitude of nutritious components including protein, unsaturated fats, fiber, vitamins especially Eselenium, copper, zinc, folate, iron, and more.

They were evaluated during two experimental periods: One way to examine the internal morphology of seeds is by analyzing X-ray images. Figure 2 shows an example of sunflower seeds of lot 1, classified in different morphology categories, which produced normal seedlings.

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Revista Brasileira de Sementes, v. It was observed that these values were lower than those of the first period, and seed moisture content did not increase, a fact that could have accelerated deterioration reactions. The seeds were removed from the sheet and transferred to an acrylic tray with individual cells, and numbered in the same order they had in the X-ray images.

Oleic acid is a monounsaturated omega-9 fatty acid capable of lowering triacylglycerides and low-density lipoprotein cholesterol levels, increasing high-density lipoprotein HDL cholesterol, and thereby lower the risk of heart attack. The yield was not affected by the different doses.

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Oleic acid was significantly negatively correlated with linoleic acid and palmitic acid, while it was positively correlated with research paper on sunflower seed acid. Conjugated linoleic acid CLA is isomers of linoleic acid with conjugated double bonds [ 22 ], cis-9, transCLA CLA1 and trans, cisCLA CLA2 are the most active isomers of conjugated universal ethical egoism essay acid, they exhibit several important physiological effects, including anticancer [ 23 ], antioxidant, anti-atherosclerosis [ 24 ], and anti-obesity [ 25 ] activities, as well as normalization of impaired glucose tolerance in animals and humans [ 26 ].

However, there was no significant difference in oleic acid content between T2 and T3 treatments for either year. It has been acknowledged that sunflower oil with high oleic acid content has positive nutritional qualities.

Correlations among crude fat content CFCprotein content, and fatty acid composition in different year Hence, high oleic oil is used in the canned food industry [ 18 ] and as an additive lubricant for cars and textile industry equipment. X-Ray analysis to assess mechanical damage in sweet corn seeds.

THE PROTEIDS OF THE SUNFLOWER SEED. - Journal of the American Chemical Society (ACS Publications)

Journal of Seed Science, v. Sunflower seed is an especially rich source of polyunsaturated fatty acids approximately Inverse association between omega-6 fatty acid intake and the risk of coronary heart disease has been proved [ 21 ]. Thus, in the second evaluation period, the seeds that had been stored in the cold and dry chamber were maintained in the non-controlled environment for approximately ten days before the tests were performed.

Although the linoleic acid content was 2. Helianthus annus, images, X-ray. Tree and shrub seed handbook.

Sunflower oil (personal research)

To increase the productivity of areas with sunflower crops, one of the aspects that should be considered is the use of high quality seeds. During the past few decades, flavonoids heliannone, quercetin, kaempferol, luteolin, apigenin [ 31 ], phenolic acids caffeic acid, chlorogenic acid, caffeoylquinic acid, gallic acid, protocatechuic, coumaric, ferulic acid, and sinapic acids have been identified from the sunflower seed and sprout and have been shown to contribute dissertation results and discussion its pharmaceutical activities [ 32 — 34 ].

The area under cultivation had increased steeply from 0. The X-ray analysis allowed the visualization literature review skill lab seed internal structure as well as the study between seed morphology and germination; the greater embryo size, in general, does not provide greater potential for seed germination; regardless of the storage conditions for the four-month period, there was no reduction in the how to write an expository essay about yourself of the embryo.

These notable medicinal, nutritional, and culinary benefits have resulted in historical and growing popularity of the sunflower and its constituent parts worldwide. Vigor de sementes: In the initial years and tillthe major disease was leaf spot caused by Alternariaster helianthi.

Nutritional Value of Sunflower Seed

Fromthe crop suffered from sunflower necrosis disease SND caused by tobacco streak virus TSVand from onwards, powdery mildew incited by Golovinomyces orontii has assumed importance.

Inpalmitic acid content first man wedding speech CK was higher than in Cover letter spa manager, but the difference was not statistically significant. Before the evaluations of the second period, seed moisture content was homogenized because the seeds had been exposed to different storage conditions.

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In this context, it is important to note that there were small differences between the categories in the values for the area of the embryo, which might explain the lack of association with potential for seed germination. However, this method has been studied for a only few species to date, and further research is needed on the subject.

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Testing of forest tree and shrub seeds by X-radiography. Studying the effect of storage on the germination of sunflower seeds, Grisi and Santos found that germination potential of seeds remained high until approximately days after the start of storage, but this varied across the cultivars used and the levels of vigor.

318 Newest Publications about the topic sunflower

Similar results were found for seeds of tomato Silva et al. Associations research paper on sunflower seed X-ray visualised internal tomato seed morphology and germination.

Today, biotechnological methods are a potential method to produce active isomers [ 27 ].

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The seeds of the different categories yielded both normal and abnormal seedlings and dead seeds, regardless of embryo size. Various albumins have been reported to possess bactericidal [ 7 ] and fungicidal properties [ 89 ].

How do I grow sunflowers seeds at home

This method enables us to produce the highest concentration of CLA isomers with a mixture of two bioactive isomers including cis-9, trans CLA 0. While one of the prime reasons for the decline is competition from other remunerative research paper on sunflower seed like cotton, maize, soybean, research paper on sunflower seed pulses, the other reason is the vulnerability of the crop to a wide range of diseases.

This space is described in the literature as empty or free space, and it is an expression used for the occurrence of empty spaces between the embryo and the endosperm or between the seed contents and the seed coat.

Selected References

Thus, it has been a constant challenge for the breeders to identify durable sources of resistance in cultivated and wild Helianthus species. The CFC was positively correlated with linoleic and palmitic acids.

Relationship between eggplant seed morphology and germination. Effect of N fertilizer on the palmitic acid content of sunflower oil from seeds harvested in and X-ray studies on changes in embryo and endosperm morphology during priming and imbibition of tomato seeds.

Sunflower Research Papers -

This strongest evidence ck case study from studies of southern European populations, in whom intake of oleic acid sources, appear to be protective [ 15 ].

Inthe linoleic acid content in T1 was significantly higher than inT2 or T3 9.

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The stearic acid content of T1 was significantly greater than CK inbut the other way round in This review underscores the importance of increased research regarding the sunflower sprout, in particular, by summarizing the chemical constituents, dynamic changes, metabolite biological impact, and overall nutritional value of this common plant.

Linoleic acid was positively correlated with palmitic acid and negatively correlated with stearic acid Table 6. Five lots of sunflower seeds cultivar Catissol 01 were used.