THE EFFECT OF NACL STRESS ON THE SUBCULTURE OF TEST-TUBE SEEDLINGS OF CHINESE JUJUBE 'MUZAO'
The present paper studies the salt tolerance of test-tube seedlings of Chinese jujube Muzao by placing different concentrations of NaCl in the subculture process. The test-tube seedlings of Muzao exhibited slower growth, weaker differentiation, fascicular buds, lighter leaf color and larger girth under salt stress. In the culture media containing NaCl 0.1 and 0.5%, the test-tube seedlings could grow normally and did not die, but the differentiative capacities of the new shoots were only 51.57 and 21.50% of the control group respectively; the heights of the plants were respectively 48.10 and 30.17% of the control group. In the culture media containing NaCl 1.0 and 2.0%, the test-tube seedlings of Muzao displayed different degrees of death. Half of the plants died in the culture medium containing NaCl 2.0% between the 30th and 35th day of the culture process. In the culture media containing NaCl 1.0 and 2.0%, the test-tube seedlings of Muzao showed very low capabilities of differentiating new shoots, which were respectively 16.29 and 4.78% of the control group; the heights of plants were respectively 26.02 and 20.95% of the control group. In the control group, the propagation coefficient was 4.875±0.161 and the average height of the plants was 4.22±0.319.
Qi, X.Y., Zhang, X.Q., Chen, Z.L., Xue, H., Liu , W. and Xie, L. (2013). THE EFFECT OF NACL STRESS ON THE SUBCULTURE OF TEST-TUBE SEEDLINGS OF CHINESE JUJUBE 'MUZAO'. Acta Hortic. 993, 143-148
NaCl stress, Chinese jujube Mu-Zao, test-tube seedlings, subculture