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| Effect of Different Storage Temperature on Transplant Quality of Broccoli Plug Seeding |
| PAN Xiao-bing，TIAN Yong-qiang，LI Juan-qi，YANG Tian，GAO Li-hong* |
| （Beijing Key Laboratory of Growth and Development Regulation for Protected Vegetable Crops，College of Agronomy & Biotechnology，China Agriculture University，Beijing 100193，China） |
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Abstract To study the effect of different storage temperatures on broccoli（Brassica oleracea L.var. italica Plenck）seedling quality，growth and development after fix planting，this paper screened the related morphological indexes of seedling new heart leaf growth rate after planting，taking‘good’as test material to evaluate the quality of broccoli seedlings under temperature 11，16，21 ℃ and stored for 0，2，4，6 days，respectively．The results
showed that in the storage temperature of 11 ℃，seedling’s morphanological index maintained in good shape，the chlorophyll content per unit area was relatively higher，and the seedling new heart leaf grew rapidly．The correlation analysis results showed that the sound seedling index and plant recovery ability after fix planting during storage period had the highest correlation coefficient．The sound seedling index could be an indicator for evaluating
the storage quality of the broccoli seedling．The path analysis results showed that composite indexes of chlorophyll content per unit area，sound seedling index，specific leaf weight could well reflect the growth recovery ability of broccoli seedling after short-term storage．
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Received: 18 September 2014
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