Abstract: Wheat interplanted in paddyfield,which was a light and predigesting cultivation method,was applied widly in area with planting rice andwheat production.The effects of different plant densities on flag leaves chlorophyll content,SOD activity and MDA content after anthesis in stronggluten wheat interplanted in paddyfield were studied.Chlorophyll content in flag leaves kept declining after anthesis,and the declining rate increased when the density increased.The dry matter accumulation amount after anthesis per stem(DAAA) and grain yield per stem(GYPS) increased with the increase of plant density.DAAA andGYPSwere very significantly negatively correlatedwith plant density.The trendof SOD activ ity in flag leaves after anthesis showed a single peak curve,the maximum value appeared in the period from the 14th to the 16th day after anthesis.MDA content in flag leaves declined after anthesis,which increased when the density in creased.On the 35th day after anthesis,SOD activity in flag leaves had a very significantly positively correlation with DAAA and GYPS,but MDA content in flag leaves had a significantly or very significantly negatively correlation with DAAA and GYPS.

Key words: Interplanted strong -gluten wheat in paddyfield, SPAD, SOD, MDA, Senescene

CLC Number: 

• S512.01