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Dragon fruit (Hylocereus spp.) is a recently introduced super fruit in India, gaining popularity both in rural and urban areas because of its attractive colour, delicious taste, and high nutritive and medicinal values. It is adaptable to humid as well as semi-arid tropical and subtropical conditions. The growing acceptance of this fruit along with its enormous medicinal and antioxidant properties has increased the demand for its cultivation followed by quality planting materials in the desired quantity. Propagation of Dragon fruit can be done by both micropropagation sexual via seeds and asexual methods via stem cuttings, grafting, and micropropagation. In this review, attempts have been made to cover various fruit propagation methods along with other related crop features about which there is relatively scanty information. The assessment also attempted to highlight the prospective propagation locations for dragon fruit, which calls for additional study to produce more information and advance crop propagation methods.
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Dragon fruit as the "Wondrous Fruit" of the twenty-first century is a cactus-like vine with great economic and nutritional potential as exotic fruit crops in domestic and foreign markets. One of the biggest issues with commercial fruit production is the development of high-quality planting materials. Considering that it is a cross-pollinated crop, true-to-type plants could not be obtained through seed propagation. Hence, standardization of vegetative propagation protocol is necessary for commercial production. Therefore the experiment was conducted at Department of Fruit Science, Horticultural College and Research Institute, Periyakulam, to assess different length of stem cuttings (viz., C1 -10cm, C2 – 15cm, C3 – 20cm and C4 - 25 cm) with various concentration of auxin level (viz., G1 – IBA 2000 ppm, G2 – IBA 4000 ppm, G3 - IBA 6000 ppm, G4 – NAA 50 ppm, G5 - NAA 100 ppm, G6 – NAA 150 ppm) for achieving growth and rooting of dragon fruit. According to the experimental findings, among the different treatments 25cm cuttings treated with IBA 6000ppm showed noticeably superior results in early root initiation (12.11 DAP) and sprout initiation (8.26 DAP), highest shoot length (75.52cm) and root length (17.64cm), Average number of roots per cutting (20.17), Average number of shoots per cutting (3.7), maximum survival percentage (93.42%) than other treatments.
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The dragon fruit (Hylocereus costaricencis) is a new emerging fruit crop, there is very less information available on the spacing and fertilizer dose requirements of this crop so the present study was carried out to find the effect of fertilizer doses, spacings, and interaction effect of both on plant growth of dragon fruit (Hylocereus costaricencis) at the Orchard, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore. during the year 2022. The design of the experiment was a split plot with four main plots viz. M1 = 3.5 x 2.0 m2, M2 = 3.0 x 3.0 m2, M3 = 3.0 x 2.5 m2, M4 = 2.5 x 2.5 m2 and six sub plots viz. S1 = N540 P420 K360, S2 = N495 P385 K330, S3 = N450 P350 K300, S4 = N340 P260 K225, S5 = N225 P175 K150, S6 = N0 P0 K0 g per pillar was applied and replicate four times. A significant difference was observed in terms of vine length (m), cladode girth (cm), cladode length (cm), and cladode number when different doses of fertilizers were applied. The highest vine length (2.96), cladode girth (24.52), cladode length (67.21), and number of cladodes (67.48) were observed in S3 (N450 P350 K300). Similarly, the highest vine length (2.503) and cladode girth (19.78) were observed in M4 (2.5 x 2.5 m2). The highest cladode length (67.47) was observed in treatment combination M2S3. Hence, the application of fertilizer dose S3 (N450 P350 K300) and adoption of spacing M4 (2.5 x 2.5 m2) is good to enhance the vegetative growth characters of dragon fruit under Tamil Nadu conditions.
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Aims@#This study aimed to isolate the fungal strains causing brown spot disease on dragon fruit and identify them using molecular biology techniques. The study also investigated the inhibitory effects of silver (Ag) and ZnO nanoparticles on the isolated fungal strains. @*Methodology and results @#Six fungal strains (TL1, TL2, TL3, TL4, TL5, TL6) causing brown spot disease (stem-canker) were isolated. TL1 and TL2 isolates were used for testing the antifungal features of nanoparticles. Nanoparticles were directly added to the PDA medium to make a solution with concentrations of 50, 75 and 100 ppm. The antifungal feature of nanoparticles was screened by inoculating with the fungal samples for 72 h. The inhibitory capacity of ZnO and Ag nanoparticles against fungal strains was then investigated. TL1 and TL2 samples were identified as Neocytalidium dimidiatum using the internal transcribed spacer (ITS) region. The study also revealed that silver nanoparticles were more effective than zinc oxide nanoparticles in inhibiting the growth of fungal strains that cause brown spot disease on dragon fruit. Specifically, ZnO nanoparticles had the highest inhibitory effect on TL2, 61.27% at 100 ppm and Ag nanoparticles gave the highest inhibitory effect on TL2, 85.83% at 100 ppm.@*Conclusion, significance and impact of study @#The research findings suggest that the use of Ag and ZnO nanoparticles may be an effective way to control brown dragon fruit spot disease. It may help in improving dragon fruit yield and aesthetic quality. As a result, it may help in reducing economic loss for farmers. However, further research is required.
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@#Introduction: Biological process of wound healing in soft tissue injury which include some phase that its highly organized cascade, such as haemostasis, inflammation, proliferation and remodeling. Healing process will be impaired when there is an interference with one of the four of the phase not going well. This study is aimed to proving the role of dragon fruit peel extract towards the interpretation of TGF- β, fibroblast cell and formation of new blood vessels during wound healing process. Methods: 20 rattus norwegicus wistar strain rats are separated into four groups. The one lower incisor is extracted, afterward the wound post extraction of the treatment group was treated with dragon fruit peel extract gel with the concentration of 15%, 30% and 60%, meanwhile, for the control groups, they are treated with polyethylene glycol gel. On the fourth day, the rats were sacrificed and preparation of immunohistochemical and histopathology are made. Observe under the light microscope with 400x magnification. Results: This study shows that the 30% concentration increase the expression of TGF- β (16.6±2.07), fibroblast proliferation (77.6±5.27) and new blood vessels (33.8±2.28) compare to the control group, 15% and 60% concentration in a meaningful way (p=0.00, p=0.00 and p=0.00). Conclusions: The dragon fruit peel extract gel may affect the wound healing process of extraction by increasing the expression of TGF- β, number of fibroblast and formation of new blood vessels.