Influence of packaging and storage on seed quality and longevity of winter annual flowers
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Date
2021-10, 2021-10
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation was carried out at Model Floriculture Centre, G.B. Pant University of Agriculture and Technology, Pantnagar, U.S. Nagar, Uttarakhand to study the influence of packaging and storage on seed quality and longevity of winter annual flowers during the year 2020-21. Five winter annual flower seeds viz. dianthus, dog flower, lupin, paper flower and verbena were packed in five packaging materials viz. cloth bag (130 gsm), plastic bag (180 gauge), aluminium bag (200 gauge), yellow paper bag (80 gsm) and glass jar (with perforated lid) immediately sealed and kept for six months of storage under ambient conditions. The experiment was laid out in factorial completely randomized design comprising of 75 treatment combinations with three replications. During the course of investigation, observations on first count germination (%), standard germination (%), seedling root length (cm), seedling shoot length (cm), seedling length (cm), seedling fresh weight (mg), seedling dry weight (mg), mean daily germination, vigour index –I, vigour index –II, speed of germination, relative growth index, mean germination time (days), t-50 value of germination, peak value were recorded. Among all treatments, lupin seed packed in plastic bag (C3P2S1) recorded highest first count germination (37.99 %, 36.03 % and 33.99 %), standard germination (85.70 % , 84.00 % and 80.00 %), seedling root length (3.50 cm, 2.89 cm and 2.41 cm), shoot length (6.69 cm, 5.80 cm and 5.57 cm ), seedling length (10.19 cm,8.69 cm and 7.98 cm), fresh weight (24.95 mg, 22.88 mg and 21.29 mg), dry weight (3.70 mg, 2.52 mg and 2020 mg), vigour index –I (872.68, 729.44 and 637.04), vigour index- II (317.09 , 2.11.68 and 176.00), peak value (8.57 , 8.39 and 7.89) whereas, lowest mean germination time (2.26 days, 2.71 days, 2.80 days) and t-50 value of germination (2.10, 2.34, 2.49 days) are recorded during storage periods i.e. initial, three months and six months respectively. Based on the above findings of present investigation, it can be concluded that packaging materials, genotypes and storage environment, all determine the storability of annual flower seeds. The plastic bags (180 gauge) and aluminium bags (200 gauge) are proved to be the best packaging materials in terms of the all the seed quality parameters for winter annual flower seeds for longer storage period at ambient conditions. The lupin and dog flower seeds proved to do well in all the germination parameters so that we can prefer as a good winter annual flowers for longer duration of time.