Enhancement of postharvest life of dendrobium flower (Record no. 26187)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 05069nam a2200193Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20220216151559.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 140128s9999 xx 000 0 und d |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 635 |
| Item number | JOM/EN |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Jomy TG |
| 245 ## - TITLE STATEMENT | |
| Title | Enhancement of postharvest life of dendrobium flower |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Vellayani |
| Name of publisher, distributor, etc. | Department of Horticulture, College of Agriculture |
| Date of publication, distribution, etc. | 1997 |
| 502 ## - DISSERTATION NOTE | |
| Degree type | MSc |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | A study was conducted at the Department of Horticulture, College of Agriculture, Vellayani from September 1996 to January 1997 to find the effects of various postharvest chemical treatments in improving quality and vase life of Dendrobium cut-flowers and to identify the best combination of chemicals for maximising vase life. The study comprised of four experiments. All of them were laid out in Completely Randomised Design except the fourth which was in factorial CRD. The conditioning treatments, pulsing and use of holding solutions were significantly influence the vase life of Dendrobium varieties. The best conditioning treatments observed in Expt.l were tap water altered to pH 3.0 (T 4) and 3.5 (T 3) which recorded a vase life of 20.67 days and 19.67 days respectively. Changes in the fresh weight, dry weight, water content, sugar content and flower size during vase life period were not influenced by the conditioning treatments. Irrespective of the treatments the fresh weight of the inflorescences increased upto the fourth day and by the seventh day a decline proceeded upto the cessation of vase life. So also the flowers were found to maintain their maximum length and width upto the seventh day of the vase life period. In experiment 2, pulsing with a combination of 4% sucrose and 400 ppm 8-HQ for six hours was found to result in the highest vase life of 21.33 days in packed inflorescences subjected to a period of transport and transit (simulated) for 24 hours. Irrespective of the pulsing treatments, changes in fresh weight and flower structure followed the same pattern as in the conditioned inflorescences of experiment 1. In experiment 3.1, the freshly harvested inflorescences conditioned for two hours in tap water of pH 3.0 were subjected to the holding solution treatments. Vase life was the highest (26 days) in T 22 (6% sucrose + 300 ppm 8-HQ + 20 ppm AgNO3 followed by T 27, T 17 and T 21. In the conditioned and pulsed inflorescences subjected to the simulation of transit and transport for 24 hours followed by treatment in holding solutions (Expt. 3.2), the vase life was the highest in T 8 (2% sucrose + 400 ppm 8-HQ + 30 ppm AgNO3), T 9 (2% sucrose + 400 ppm 8-HQ + 40 ppm AgNO3), T 11 (4% sucrose + 200 ppm 8-HQ + 30 ppm AgNO3), T 15 (4% sucrose + 300 ppm 8-HQ + 40 ppm AgNO3), and T 17 (4% sucrose + 400 ppm 8-HQ + 30 ppm AgNO3). The sucrose concentration of the treatments which resulted in a high vase life was generally lower for the pulsed flowers when compared to the non-pulsed flowers of experiment 3.1. In both the groups, irrespective of the treatments, changes in flower structure measured as changes in the maximum length and width of the flowers, were noticed during the vase life period. The fourth experiment was carried out to test the applicability of the results of the experiments 1, 2, 3.1 and 3.2 in three other popular cultivars namely, Dendrobium Mary Trowse, D. Candy Stripe and D. Waiter Oumae. The vase life of all the varieties were increased by the treatments T 1 to T4 when compared to the control (T5). In D. Walter Oumae a greater vase life was observed in flowers subjected to conditioning followed by pulsing (T 2), conditioning, pulsing and holding in 6% sucrose + 300 ppm 8-HQ + 20 ppm AgNO3 (T 3) and conditioning, pulsing and holding in 2% sucrose + 400 ppm 8-HQ + 30 ppm AgNO3 (T5) than the control (T 5). In Dendrobium Mary Trowse, T3 and T4 recorded a greater vase life and in D. Candy Stripe, conditioning alone (T1) and T3 were observed to result in a greater vase life. The sugar content of the flowers observed at the cessation of vase life was also influenced by the treatments. The electrical conductivity of the holding solutions was not observed to be in the detectable range during the vase life period. Spike bending was not observed in Dendrobium Sonia and other varieties. The petal colour variations irrespective of the treatments recorded from the start to the cessation of vase life showed that in the coloured cultivars namely Dendrobium Sonia, Dendrobium Mary Trowse and Dendrobium Candy Stripe, the petal colour deepened before browning, while in the Dendrobium Walter Oumae, in the absence of colouring pigments, the loss of white colour and the onset of browning was gradual. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sabina George T (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/handle/1/5810099155 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810099155&fileid=d2653553-c6e1-4377-a377-e6e856590182 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Koha item type | Theses |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2014-03-18 | 635 JOM/EN | 171235 | 2014-03-18 | 2014-03-18 | Theses |