EFFECT OF PLANT HORMONE ON SEED DEVELOPMENT IN PEANUT (Arachis hypogaea L.)

花生的产量比大豆低。产量低的原因是花多，但坐果率仅占全部花的10%左右。对于不确定的物种，已知在营养器官和生殖器官之间存在同化物的竞争。花生在花期中后期坐果率较低，营养生长多，导致繁殖产量降低。从各种植物激素的施用实验来看，较低浓度的脱落酸的施用促进了种子的生长发育（Nojima H. et al. 1994,1998）。种子中内源脱落酸的浓度在种子发育过程中逐渐增加（Kusakawa T. and Nojima H. et al. 1996）。本研究的目的是阐明脱落酸对碳水化合物和氮分配到种子的影响。下面是这份报告的章节。花生植株各器官出液中糖成分的季节变化。脱落酸与种子生长发育的关系。施脱穗酸对种子氮素分配的影响应用脱落酸对游离氨基酸向种子转运的影响。

The yield of peanut is lower than soybean. The reason of lower yield is that there are many flowers, but the rate of fruit set is only about 10% of all flowers. For indeterminate species, it is known that there is the competition of assimilates between the vegetative and reproductive organ. In peanut, the rate of fruit set on the middle and late flowering is lower, and much vegetative growth causes to reduce the reproductive yield. From the application experiments of various plant hormones, the lower concentration of abscisic acid application promotes the seed growth development (Nojima H. et al. 1994,1998). The concentration of endogenous abscisic acid in seed becomes to increase during seed developing (Kusakawa T. and Nojima H. et al. 1996).The object of this study is to clarify the effect of abscisic acid on the partition of carbohydrate and nitrogen to seed. Below is the chapter of this report.1. Seasonal Changes of Sugar Composition in Bleeding Sap from Various Organs of Peanut Plant. 2. Relationship of Abscisic Acid to Seed Growth Developing. 3. Effect of Abscieic Acid Application on Partitioning of Nitrogen to Seed. 4. Effect of Abscisic Acid Application on Translocation of Free Amino Acid to Seed.