Effect of Different Light Qualities on the Seed Germination，Seedling Growth and Cold Resistance of Cucumber(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Different Light Qualities on the Seed Germination，Seedling Growth and Cold Resistance of Cucumber

Author(s):: LIU Weicheng; WEI Feng; HAN Zeyu; QI Juanxia; ZHANG Yahong; （School of Agriculture，Ningxia University，Yinchuan，Ningxia 750021）

Abstract:: Taking ‘New bright K21’ cucumber as experimental materials and the seeds with five kinds of quality of lights (red R；blue B；7 red and 1 blue，7R/1B；5 red and 1 blue，5R/1B；natural light as CK) were treated to study the effect of different light qualities on cucumber seed germination，seedling growth and cold resistance of the seedlings，in order to select the best light quality for cucumber.The results showed that R treatment of seed germination rate was the highest which was 25.98% higher than CK treatment，additionally，plant height，fresh weight，dry weight，root length and other indicators increased as the compound light red proportion increased.The plant height of R treatment was the highest which was 1.23 cm higher than CK treatment.7R/1B was the best treatment for stem diameter，0.43 mm wider than CK treatment；the root length was the longest with 7R/1B treatment as well which was 1.00 cm longer than CK treatment.After low temperature treatment，the relative chlorophyll content，electrolyte leakage，SOD activity，POD activity and CAT activity of the seedling were changed，and on the fifth day there was a significant difference.The optimal quality for cold resistance was 5R/1B.Based on the above analysis，the best optimal light treatment for growth of cucumber were 5R/1B and 7R/1B.

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Last Update: 2016-11-03