In order to characterize the grain-filling of curved panicle type rice,we exploited Liaoning japonica curved panicle rice as the material,and then study the correlation between the rice grain filling rates in different positions and a few agronomic traits.

【Method】 Thirty days after heading, the lodging resistance of every elongating internodes of erect panicle type rice (EPT) and curved panicle type rice (CPT) were studied by using 12 japonica rice cultivars as materials and T-test as statistical analysis method.

Dinebra retroflexa (Vahl) Panz.

Dinebra retroflexa (Vahl) Panz.

Analysis of yield elements for the super rice varieties with different plant and panicle types;

The results of eating test showed that:Comprehensive evaluation and viscosity of curved-panicle type were superior to the contrast,and their taste and ap.

Differences in grain shape among the grains at different positions between the cultivars with erect panicle type and the cultivars with curved panicle type were studied.

Study on dynamic changes of starch accumulation in grain and related enzymes in winter wheat cultivars with two spike types;

Study on the high yield characteristics of the three different spike types of wheat varieties;

In the field,two winter wheat cuhivars including multi-spike type and large-spike type were cultivated, and the effects of planting density on the starch components and the starch pasting property of grains were studied.