Rice Varieties With Different Spike Photosynthesis And Grain Filling Dynamics

This article take 6 six different types of grain of rice for material, has studied in jilin yanbian korean prefectures rice ecological conditions the different types of grain of rice IAPS and APD changes, LSC and SPAD changes dynamically. Expect to high efficient varieties of rice light-ziyanno and rational use to offer a theoretical basis and technical means. Its main findings are as follows:1. The test results show that different types of grain of rice IAPS with the rate of growth in a single peaked curve in the exhibition, after a week or so to achieve maximum value, the decreasing.2.Semi-erect rice IAPS is significantly higher than curved pancil rice,and semi-erect rice maximum IAPS is higher than curved pancil rice, most significant differences exist between different types of grain of rice. Rice varieties with different spike photosynthetic rate continued high value of the difference is very significant, semi-erect panicle varieties of active photosynthesis duration (APD) was longer than curved panicle cultivars.3. LSC spike in six different rice varieties had significant differences in the leaf of rice varieties there are genetic differences between source capacity and therefore a means of selection by breeding varieties of rice leaf source volume is possible. Rice varieties with different spike LSC elements of the cultivars had significant differences, indicating that IAPS, APD, and there are genetic differences in leaf area. Therefore, these traits as breeding objectives and for improved selection is possible.4. Panicle rice cultivars with different chlorophyll content in the same early stage, flag leaves are the lowest, only about one week after the full expansion of flag leaf clover on the occurrence of chlorophyll content in different trends. Different ear leaf SPAD values of rice flag leaf varieties are different.5. Semi-erect panicle rice varieties, middle and lower final weight of grain is almost the same uniform distribution, and filling rate high enough filling material, the Filling reasonable; curved panicle rice varieties, middle and lower grain weight difference between the final large, reaching the maximum time difference of grain filling larger Filling unreasonable.6.Different Panicle After Heading panicle rice grain dry weight of filling the passage of time and changes regularly, half erect panicle after heading variety Changbai 14 fastest-growing grain panicle.7. Panicle rice varieties with different source-sink delta genotype than the existence of different varieties of semi-erect panicle sink closer to 1 than incremental, further evidence of the semi-erect panicle varieties of leaf photosynthesis and grain filling more balanced relationship between reasonable.8. In high light efficiency super high yield rice breeding, the breeding of semi-erect panicle type varieties that will help more leaf photosynthetic capacity, improve the filling rate, increase the contribution rate of grain, to play a yield potential of the goal easier to achieve high yield...