| Autor: |
MADHUBALA, R., SUJEETHA, ALICE R. P., RAJASRI, M., SREEDHAR, M., GEETHA, P., GUPTA, C. S. |
| Předmět: |
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| Zdroj: |
Mysore Journal of Agricultural Sciences; Jul-Sep2022, Vol. 56 Issue 3, p161-169, 9p |
| Abstrakt: |
Carnation (Dianthus caryophyllus L.) cut flower is commercially cultivated for its wide range of colours under protected cultivation in the poly houses of Telangana. A survey was conducted in the poly houses of Nalgonda and Suryapet districts during March, 2019 to identify major pest problem associated with carnation cut flower in which, bud borer, thrips and mites were identified as the major problem. Irradiation, a non chemical approach is used as one of the phytosanitary treatment for the control of quarantine insects. As it is important to verify the tolerance of cut flower to radiation, an experiment was conducted to study the effect of irradiation on the vase life of white and pink carnation cut flowers. The gamma irradiation at 150, 250, 350 and 450 Gy doses were evaluated on white and pink carnation at room temperature as experimental set I (27º ± 1ºC) and at refrigerated condition as experimental set II (4º C). The present study indicates that both white and pink carnations can tolerate different doses up to 450 Gy based on freshness score, relative fresh weight and volume uptake when stored under refrigerated condition up to 13 days and white carnations under room temperature up to 5 days. The pink carnation were tolerant up to 2 days only and started to show deterioration from 3rd day onwards at room temperature. The irradiated as well non irradiated pink carnation were found to be not suitable for storage at room temperature based on freshness score. The white carnation flowers responded well and performed better compared to pink carnation at room and refrigerated condition. The carnation cut flowers were toletant to 450 Gy dose irradiation and this dose is effective against most insects. Hence, irradiation can be used as a phytosanitary measure to control most of the quarantine significance pests associated with carnation. Another experiment to determine the effect of chemical holding / preservative solution on the vase life of carnation was conducted at Plant Biosecurity Division, National Institute of Plant Health Management, Hyderabad. The cut flowers were placed in different holding solutions at room temperature viz. T1: Sucrose (2%); T2: Citric acid (200 ppm); T3: Sucrose (2 %) + Citric acid (200 ppm); T4: Silver thio sulphate (150 ppm); T5: Silver thio sulphate (150 ppm) + Sucrose (2%); T6: Silver nitrate (150 ppm); T7: 8-Hydroxy quinolone sulphate (150 ppm) T8: Distilled water (control) and the treatments were analyzed based on relative fresh weight, freshness score and solution uptake. Based on the result it was found that citric acid - 200 ppm and sucrose (2%) + citric acid - 200 ppm was the best holding solution for white and pink carnation respectively and these preservative solutions helps to prolong the vase life of carnation cut flowers. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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