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油菜素内脂(Brassimolide,简称Br)它是一种在植物界广泛存在的植物生长调节剂,有人称之为第六激素。其熔点274-275℃,分子式C_(28)H_(48)O_6。 Br具有生长素、赤霉素类似活性,对小麦、燕麦胚芽鞘以及绿豆、黄瓜子叶下胚轴生长有显著促进作用,对提高某些作物耐冷性也有良好效果。据美国农业部和日本农业研究单位的报告,极低浓度的Br就能促进多种粮食作物和蔬菜的产量增加。
Brassinolide (Brassimolide, referred to as Br) It is a widely plant growth regulator in the plant kingdom, some call it the sixth hormone. The melting point of 274-275 ° C, the molecular formula C_ (28) H_ (48) O_6. Br has the similar activity of ghrelin and gibberellin and has a significant promoting effect on the hypocotyl growth of wheat, oat coleoptile, mung bean and cucumber cotyledons, and also has good effect on improving the cold tolerance of some crops. According to reports from the United States Department of Agriculture and Japan’s Agricultural Research Unit, very low concentrations of Br can promote increased production of many food crops and vegetables.