The Influence Of Chemical Agents On Rice Growth And Development

Hybrid rice has a certain potential production japonica, but poor quality problems severely limit its market value. The northeast rice is famous for its high quality, so the development of japonica hybrid rice has to improve its quality to gain a foothold in the commodity market. For the study of hybrid japonica rice filling characteristics and the relationship between rice quality, the real experiment chooses Eight hybrid japonica rice, Seven prolific conventional rice and two 2 quality Japanese varieties as experimental material district adopt randomized block design, repeat 3 times. The ears full panicle stage and keep only the upper a branch, the upper secondary branch, a branch in central, central lower secondary branch, a branch, the lower secondary branch. Starting from full panicle stage, every 10 days respectively for treatment and control rate of filling stage and ADPG focal phosphorylase, soluble starch synthase (SSS) and starch branching enzyme (SBE) the determination of enzyme activity. Mature, respectively to investigate different parts of different production components and quality traits. The experimental results showed that the production, quality of different types of rice varieties were all have differences. In general, the production of hybrid japonica rice varieties between inbred> high production varieties> Japanese rice varieties; And the quality is Japan> high-productioning rice varieties between inbred varieties> hybrid japonica rice varieties. The same variety between different parts of the grain production characteristics and quality traits also exist obvious differences. Generally speaking, the living on a branch grain traits is superior than the born in secondary branch grain; In the upper of grain production and variety traits is superior to the lower grain. In the hybrid japonica rice part number and secondary branch grain number were significantly higher than conventional varieties and Japan varieties proportion in liaoning is very big, so the grain number per panicle of japonica hybrid rice was significantly more is the main reason for the high production, but also seriously affected the quality traits of hybrid japonica rice. Further confirmed through to the ears of the different parts of the grain processing part library and source shortage seriously limits the japonica hybrid rice grain production and quality improvement. Through to the different types of rice varieties and milking stage grouting dynamic and enzyme activity were analyzed, found that different ear filling dynamics and enzyme activity of seed there are big differences, that rice grouting characteristic also has a significant effect on the production and quality of rice. Above all, a modest increase in the birth on the top of the grain in proportion, reduce the part number, secondary branch keep stable grouting and keep relatively lasting and stable early rate, especially late grouting rate helps to improve the production and quality of hybrid japonica rice.