Ca2+对淹水胁迫下辣椒幼苗生长和碳水化合物含量的影响

为了研究辣椒幼苗(Capsicum frutescent L.)在淹水胁迫环境下，Ca2+对其幼苗生长及碳水化合物的影响，以花溪党武辣椒为试材，通过Ca2+浸种处理，研究不同时间（0、3、6、9、12天）根际淹水胁迫下Ca2+对辣椒幼苗生长和碳水化合物含量的影响，研究结果表明：干鲜重在胁迫达到第12天时，除地上部干重外，淹水加钙处理与纯淹水处理均达极显著水平。碳水化合物方面，在变化规律达峰值时，蔗糖、果糖含量在根、茎、叶中均表现为Fl+Ca>Fl>CK；可溶性糖含量在根、茎、叶中表现为Fl>Fl+Ca>CK；葡萄糖和淀粉含量在茎、叶中表现为：Fl+Ca>Fl>CK，根中则为CK>Fl>Fl+Ca。Ca2+对淹水胁迫下辣椒幼苗的生长及碳水化合物含量产生很大的影响，本研究结果对淹水胁迫的继续研究及应对措施提供理论支持。

Effect of Ca2+ on Growth and carbohydrate contents of Pepper Seedlings Under Root-zone Flood Stress

In order to studied the effect that Ca 2＋ to the growth of pepper seedling （Capsicum frutescent L.） and carbohydrates content under different time （0 day,3 days,6 days,9 days and 12 days） with the root flooded stress,we used ’ Huaxi Dangwu ’ pepper as the material by Ca 2 ＋ soaking treatment.The results showed that,flooding add Ca 2 ＋ and flooding achieved significant level except aboveground department dry weight on 12 days.In carbohydrates aspects,the content of sucrose and fructose were Fl＋Ca 〉 Fl 〉 CK in roots,stem and leaves,the content of soluble sugar was Fl 〉 Fl＋Ca 〉 CK in roots,stem and leaves,the content of glucose and starch were Fl＋Ca 〉 Fl 〉 CK in stem and leaves,CK 〉 Fl 〉 Fl＋Ca in roots.Influence of Ca 2 ＋ on impact the growth of pepper seedling and carbohydrates under water flooding,the results obtained might give some guidance for studying and countermeasures of flooding stress.