Study on Correlation between Germination Rate of Tomato Seeds under Suboptimal Temperature and Cold-resistant of Tomato Seedlings

doi:10.7668/hbnxb.2011.S1.022

Abstract

Abstract: To provide guidelines for rapid identify of different cold resistance of tomato germplasm,the correlation between germination rate of tomato seeds under suboptimal temperature and cold-resistant of tomato seedlings was investigated.Our results showed that there was a negative correlation between the germination rate of tomato seeds under suboptimal temperature and chilling index of tomato seedlings(r=-0.781 7^*).Whereas the chilling index of tomato seedlings showed significant negative correlated with the chlorophyll content of tomato seedlings leaves treated under cold temperature(12℃/8℃) for 3 days(r=-0.914 4^**) and SOD activities of tomato seedlings leaves treated under cold temperature(12℃/8℃)for 6 days in addition,the chilling index of tomato seedlings was negative correlated with the relative permeability of cell membrane and soluble sugar content of tomato seedling leaves treated under cold temperature(12℃/8℃) for 6 days(r=-0.773 6^*,r=-0.760 8^*).In conclusion,the germination rate of Germination rate;tomato seeds under suboptimal temperature was correlated with cold resistance of tomato seedlings and the germination rate under 15℃ for 12 days of tomato seeds can be used as a rapid identify index of different cold resistance of tomato germplasm.

Key words: Tomato, Suboptimal temperature, Cold resistance, Correlation

CLC Number:

YAN Yan, HE Chao-xing, ZHANG Zhi-bin, YU Xian-chang. Study on Correlation between Germination Rate of Tomato Seeds under Suboptimal Temperature and Cold-resistant of Tomato Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(S1): 104-109. doi: 10.7668/hbnxb.2011.S1.022.

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