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Effects of Salt Stress on root vitality of Limonium bicolor (Bunge) Kuntze

Agricultural Science & Technology 2013年第6期14卷 832-834,910页

作者：林莺范海滨州医学院中西医结合学院山东烟台264003 山东师范大学生命科学学院山东济南250014

[Objective] This study aimed to investigate the effects of different salt concentrations on the root vitality of Limonium bicolor （Bunge） Kuntze. [Method] Limonium bicolor （Bunge） Kuntze was treated with 0, 100, 200 and 400 mmol/L NaCl, respectively. After two weeks, root vitality, biomass and other physiological indicators were measured. [Result] Salt stress had significant influences on the growth of roots. root vitality of Limonium bicolor increased firstly and reduced gradually with the increase of salt concentration. [Conclusion] The results indicate that Limonium bicolor has certain salt tolerance ability at low salt concentrations; under relatively high salt concentrations, Limonium bicolor roots can maintain high vitality; however, with the continuous increase of salt concentration, Limonium bicolor roots are damaged, with decreasing vitality.

关键词： Limonium bicolor (Bunge) Kuntze Salt stress root vitality

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Effects of Light Quality on Carbon and Nitrogen Assimilation and root Activity of Eggplant

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Agricultural Science & Technology 2017年第12期18卷 2229-2231,2235页

作者： Yuefeng ZHAO Kun CHEN Qinghua ZHANG Yufeng HAN Cangong HAN Shangqiu Academy of Agriculture and Forestry Sciences Shangqiu 476000China

[Objective] This study was conducted to provide theoretical and data reference for high-quality high-yield production of Shangqie 1 under controlled light quality environment and light quality control of other eggplant varieties. [Method] With Shangqie1 as an experiment material, the effects of red light, blue light, red-blue light, red-blue light and white light(control) on the carbon-nitrogen metabolism and root vitality of eggplant were investigated. [Result] Different light quality significantly affected sugar and starch contents in leaves of eggplant. Under the red-blue light(5∶1) treatment, the sucrose, total sugar and starch contents were the highest, and the values were higher than those under the white light treatment by 3.47%, 13.61% and 33.49%,respectively. The fructose content was the highest under white light. Under red-blue light(3∶1) and red-blue light(5∶1), the nitrate nitrogen contents were higher than that under white light, indicating that compound light affects nitrate content not only by simple superposition of light quality, but also by other type of interaction effect. The free amino acid and soluble protein contents under blue, red-blue(3∶1), red-blue(5∶1) and red light treatments were all higher than those under the white light treatment, and the blue light treatment exhibited the highest values, which were higher than those under white light by 24.89% and 46.62%, respectively, with significant differences. The red-blue light(5 ∶1) treatment exhibited the highest root vitality of eggplant, which was higher than that under the white light treatment by 31.85%. The red light treatment had the second highest root vitality, which was higher than that under the white light treatment by 19.30%, followed by the red-blue light(5∶1) treatment, and the blue light treatment showed the lowest value. [Conclusion] Under red-blue light(5 ∶1) treatment, eggplant had vigorous carbon-nitrogen metabolism and the highest root vitality.

关键词： Shangqie 1 Light quality Carbon-nitrogen metabolism root vitality

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