Akademik Veri Yönetim Sistemi
SEED SCIENCE AND TECHNOLOGY, cilt.34, sa.3, ss.701-712, 2006 (SCI-Expanded)
The emergence of thirteen commercial seed lots (laboratory germinations from 86 to 93%) of 6 cultivars of pepper (Capsicum annuum) was compared in compost in an unheated greenhouse. A March sowing gave a low temperature emergence (LTE) of the lots front 71 to 96% and an August sowing, a high temperature emergence (HTE) from 63 to 93%. The physiological germination (radicle of 2mm long) of the lots was determined after controlled deterioration (CD) at 45 degrees C and at 18, 20 and 22% moisture content (me) for 24, 48, 72 and 96 hours. Germinations ranged from 74 to 92% for 24 hours at 18% me and 3 to 95% for 96 hours at 22% me and were significantly and positively correlated with LTE (6 out of 12 correlations) and HTE (9 out of 12 correlations). Germination after CD at 22% me for 24 hours was strongly correlated with HTE (r= 0.86, p < 0.001) and LTE (r= 0.73, p < 0.01). Initial laboratory germination was not significantly related to either LTE or HTE. Laboratory germinations after 4 and 8 month storage at 5 degrees C and 8% me were closely correlated (mostly p < 0.001) with CD germinations for all but three CD conditions, more so than was initial laboratory germination. Mean emergence time (MET) in the LTE was inversely related to CD germination (24 hours, 22% me) for three lots of the cultivar Yaglik and four lots of the cultivar Demre Sivrisi. Slower emerging lots had lower germinations after CD. The CD conditions of 24 hours and 22% me are suggested as a routine test for pepper to predict emergence performance and longevity in store. The practical implications of the findings are discussed in relation to the production of uniform transplants in protected cultivation.