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| Changes of Pertinent Indices in Cucumber Root System under Low-nitrogen Stress |
| XU Jing-jing，QIN Zhi-wei*，YU Ming-lei，WU Tao |
| College of Horticulture，Northeast Agricultural University，Harbin 150030，Heilongjiang，China |
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Abstract Two cucumber cultivars D0328 and Dongnong 806 with widely different low-nitrogen tolerance indices were chosen as test materials,in order to find the changing mechanism through studying the changes in several indices of both cucumber roots during the whole period of duration.The result showed that in the case of low-nitrogen stress,the root volume,root dry weight and root vigor of both cultivars all increased before the full bearing stage and then decreased.However,the bleeding flow rate of both roots incre...
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Received: 29 December 2010
Published: 21 April 2011
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