Abstract: In order to provide theoretical basis for their water supply during growing of Brassica chinensis L.var. parachinensis (Bailey), studies on the effect of different treatments on physiological indices of seeding was done under different soil water stress. The indices included the relative water content,chlorophyll content,proline content,soluble sugar content and malondialdehyde concent. The seeding were used as experimental material through artificial control of water to determine the relative water content,chlorophyll content,proline content,soluble sugar content and malondialdehyde concent. The result showed that in the first 0 to 8 d,there were no significant change in the relative water content,chlorophyll content,proline content,soluble sugar content and malondialdehyde concent between different water treatments. With the stress time extension,relative water content decreased rapidly compared with the control,the differences were significant or very significant. Under severe soil water stress condition,the chlorophyll content increased steadily compared with the control. The proline content,soluble sugar content and malondialdehyde concent are significantly increased with the degree of soil water stress.

Key words: Brassica chinensis L. var. parachinensis (Bailey), Soil water stress, Relative water content, Chlorophyll, Proline, Soluble sugar, Malondialdehyde

CLC Number: 

• S634.5