Responses of Physiological and Biochemical Indices of Seedling Transplanted Cotton to Different Temperature Treatments in Recovering Stage
Taking open cultivation as control, this study was to investigate responses of substrate seedling-raising transplanted cotton to two different temperature treatments (film-mulched and plastic tunnel in film-mulched) in recovering stage. The results showed that: during the recovering stage, the different temperature treatments has no significant influence on chlorophyll content, MDA and proline content were all going up at first, and then descending to a steady situation. The content of MDA and proline in film-mulched and plastic tunnel in film-mulched cotton were lower than those of open cultivation. The higher temperature is beneficial to relieve the stress level of cotton seedling. Under three different treatments, SOD activity and POD activity were all going up first, then decreasing to a steady level. POD was more sensitive to the negative environment than SOD. In recovering stage, there were no significant differences in statistics on cotton seedling qualities among three treatments. After recovering stage, the fresh weight and leaf area per plant of plastic tunnel in film-mulched cotton were larger than the others. Higher temperature is beneficial to shorting the recovering stage and promoting the cotton seedling delivery early.
cottonsubstrate seedling-raising and transplantingrecovering stagephysiological and biochemical
国家科技期刊平台
NSTL
万方数据
维普
