引言在低纬度高海拔地区,白三叶(Trifolium repens L.)是一种重要的豆科牧草。为了保证持续地供应适应当地生境品种的种子,就必须在这些地区进行种子生产。但在赤道附近的地区,特定基因类型的种子生产的潜势主要取决于花芽生成的多少,在哥伦比亚(Crowder,1960)和印度尼西亚(Nurjaya,1983)就是如此。在夏威夷一种基因型的白三叶花蕾的形成受短日照的 INTRODUCTION Trifolium repens L. is an important leguminous pasture in low latitudes and high altitudes. In order to ensure the continuous supply of seeds adapted to the local habitat variety, seed production must be carried out in these areas. But in the area around the equator, the potential for seed production for a particular genotype is largely determined by how much flower buds are produced, as is the case in Colombia (Crowder 1960) and Indonesia (Nurjaya 1983). The formation of a genotype white clover bud in Hawaii is affected by short daylight