摘要： 我国的设施辣椒栽培面积不断增加,以现有的品种为试材,研究其耐寒性情况,为设施辣椒的栽培生产提供参考。以晋尖椒1号、保椒F1、良椒2313、中椒22号4个辣椒品种为试材,研究了各辣椒品种分别在15℃/5℃(昼/夜),20℃/10℃(昼/夜),25℃/15℃(昼/夜)3个不同的温度处理下,其生长指标和生理指标(可溶性糖含量、脯氨酸含量、POD活性、SOD活性、根系活力、叶绿素含量、丙二醛含量)的变化。结果表明,随着温度的降低,各辣椒品种的各项生长指标及干物质、根系活力、叶绿素含量、SOD活性都逐渐减小,而可溶性糖含量、脯氨酸含量、POD活性、丙二醛含量逐渐增大。在低温处理前后,所研究生理指标的变化有明显的差异,说明其变化与辣椒的抗寒性密切相关。根据测定的各项指标对4个辣椒品种进行筛选,其抗寒性大小顺序为:良椒2313、中椒22号、晋尖椒1号、保椒F1。
关键词:
辣椒,
低温胁迫,
生长指标,
生理指标,
抗寒性
Abstract: Our facility pepper cultivation area increased,so our current varieties were used to study their resistance to cold conditions to provide reference for the facilities pepper cultivation.In this experiment,we use the variety of Jin pepper No.1,Baojiao F1 generation,Liangjiao 2313,Zhongjiao 22 to determine their growth index and physiological index(Soluble sugar content,proline content,POD activity,SOD activity,root activity,chlorophyll content,malondialdehyde content)under the temperature of 15℃/5℃(day/night);20℃/10℃(day/night);25℃/15℃(day/night).The results showed that the growth index,the dry matter content,root activity,chlorophyll content,SOD activity had decreased,when the temperature increased,the Soluble sugar content,proline content,POD activity,malondialdehyde content gradually increased.The changes of physiological index before and after the treatments show that the index are closely related to pepper's cold-resistance ability.The four pepper cultivars,according to various indicators of cold resistance were listed in an order.Liangjiao 2313,Zhongjiao 22,Jin pepper No.1,Baojiao F1 generation.
Key words:
Pepper,
Low temperature,
Growth index,
Physiological index,
Cold resistance
中图分类号:
柴文臣, 马蓉丽, 焦彦生, 邢国明. 低温胁迫对不同辣椒品种生长及生理指标的影响[J]. 华北农学报, 2010, 25(2): 168-171. doi: 10.7668/hbnxb.2010.02.034.
CHAI Wen-chen, MA Rong-li, JIAO Yan-sheng, XING Guo-ming. Influences of Low Temperature Stress on Pepper′s Growth Index and Physiological Index[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(2): 168-171. doi: 10.7668/hbnxb.2010.02.034.