Effects of Priming Treatment on Storage and Longevity of Tomato Seed
WU Ping, SONG Shun-Hua, LI Li, XING Bao-Tian, DING Hai-Feng
1Beijing Vegetable Research Center， Beijing Academy of Agriculture and Forestry Sciences， Key Laboratory of Biology and Genetic Improvement of Horticultural Crops（ North China）， Ministry of Agriculture， China， Key Laboratory of Urban Agriculture（ North）， Ministry ofAgriculture， China； 2 Beijing Jingyan Yinong Sci-Tech Development Center， Beijing 100097， China
Abstract：Tomato（ Solanum lycopersicum L．） seeds were primed with 30% PEG and 3% KNO3 solution，respectively．After this treatment，seeds germination rate and synchronization were improved．Then these primed seeds were stored at room temperature．Their germination power，germination rate and germination index were tested periodically during 5.5 years when they were preserved．The results showed that the priming effect of PEG treated seed was maintained during preservation period，and the seeds did not show the tendency of deteriorating faster than the untreated seeds．Accelerated aging experiment was carried out on all primed seeds．The result indicated that PEG primed seeds showed more antideterioration ability than those untreated seeds and KNO3 primed seeds．The germination characters of seeds treated with priming after deterioration and with deterioration after priming were compared．The result indicated that the deterioration after priming treatment had lesser influence on seed vigor．
