Pepper seed longevity following production under high ambient temperature
1997
Passam, H.C. (Agricultural University of Athens, Athens (Greece). Laboratory of Vegetable Production) | Lambropoulos, E. | Khah, E.M.
Seeds of sweet pepper (Capsicum annuuum L.) cultivars E-84066 and Yolo Wonder were produced over three seasons between 1988 and 1990 and stored at ambient (25 +- 3 deg C) and low (5 deg C) temperature. During 42 months of storage seeds of E-84066 deteriorated more rapidly than those of Yolo Wonder, especially at 25 deg C. However, the rate of deterioration varied between seasons. When storage time was extended to 56 months (E-84066) and 68 months (Yolo Wonder) seeds of both cultivars stored at 25 deg C showed reduced germination under laboratory conditions, whereas those stored at 5 deg C still germinated to over 80 %. It is concluded that deterioration of pepper seeds during prolonged storage differs between cultivars and is influenced by storage temperature and cultivation conditions (i.e. year of cultivation). When seeds that had been stored for 56 months (E-84066) and 68 months (Yolo Wonder) were sown in peat compost, total emergence, with the exception of Yolo Wonder stored at 5 deg C, was very low (2-7 % for E-84066 and 17.5 % for Yolo Wonder stored at 25 deg C). Emergence in these cases was greatly increased by osmoconditioning the seed prior to sowing, but the effectiveness of this treatment depended on the viability of the seeds as indicated in the tetrazolium test
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