摘要
为研究低温对茄子(Solanum melongena L.)根吸收面积和可溶性糖质量浓度的影响,选取耐低温性不同的6份材料进行低温处理,前2 d内白天15℃,夜间10℃,光照度4 000 lx,从第3天开始白天10℃,夜间7℃,光照度4 000 lx,再连续处理10 d.调查不同品种茄子的耐低温性及根系总吸收面积、活跃吸收面积、比表面积、可溶性糖质量浓度的变化,结果表明,不同品种茄子总吸收面积、活跃吸收面积、比表面积、可溶性糖质量浓度在常温下差异不显著,但低温处理以后差异均达极显著(P<0.01),根系活力下降,可溶性糖质量浓度上升,耐低温性与处理后的总吸收面积、可溶性糖质量浓度的偏相关呈显著正相关(P<0.01).说明低温使茄子幼苗的生长受到一定程度的影响,但能够通过调节自身的物质代谢来减轻低温的伤害,维持植物体的正常生长及生理代谢功能.
To study the absorption area and soluble sugar concentration of Solanum melongena L. root under low temperature, six materials with different cold resistance were low-temperature treated with 4 000 lx lighting 15/10 ℃ in day/night for 2 days, 4 000 lx lighting 10 ℃/7 ℃ in day/night for 10 days. Several characters such as absorption area, active absorption area, ratio surface area, soluble sugar concentration were investigated. The results indicated that normal temperature had no significant in- fluence on these characters. Low temperature extremely significantly influenced on these characters （P 〈 0. 01 ）. Root vitality decreased and soluble sugar concentration increased after the low temperature treatment. Correlation analysis showed that chilling tolerance was significant positive partial correlation with absorption area and soluble sugar concentration （P 〈0. 01 ）. It could be concluded that the growth of eggplant seedlings were negatively influenced by low temperature stress, but the metabolism could ad- just themselves to avoid low temperature harms.
出处
《仲恺农业工程学院学报》
CAS
2014年第1期10-13,共4页
Journal of Zhongkai University of Agriculture and Engineering
基金
山西省农业科学院博士基金(ybsjj0909)资助项目
