燕山山脉不同居群豆茶决明的种子形态及营养成分比较

豆茶决明也Cassia nomame ( Sieb.) Kitag.页为云实科( Caesalpiniaceae)决明属( Cassia Linn.)一年生草本植物1]，其地上部分及种子可入药，主治水肿、肾炎、慢性便秘、咳嗽和痰多等，并具有驱虫、健胃之功效，也可代茶饮用2]，在药理和保健方面具有多重功效，是极具开发潜力的野生植物资源。目前仅燕山山脉的河北省青龙满族自治县每年就有近1000 t的豆茶决明全草出口，而且燕山山脉民间还有用豆茶决明种子做酱的习惯，致使豆茶决明野生资源面临枯竭的境地。目前，对豆茶决明的研究还非常有限，尤其在资源调查、引种、栽培和开发等方面。

Comparison on morphology and nutrient composition in seeds of Cassia nomame from different populations in ;Yanshan Mountains

Morphological characteristics, main nutrient composition and part of mineral element contents in seeds of Cassia nomame ( Sieb.) Kitag. from five populations in Yanshan Mountains were analyzed. The results show that length, width and thickness of seeds from different populations of C. nomame are 3. 36-3. 50 mm, 2. 46-2. 61 mm and 1. 18-1. 28 mm, respectively. Hundred-grain mass is 0. 86-1. 13 g, water content is 4. 82%-5. 28%. The contents of soluble sugar, soluble protein and crude fat are 29. 98-49. 79 mg · g-1 , 21. 52-24. 03 mg · g-1 and 30. 08-55. 58 mg · g-1 , respectively. The contents of Fe, Mn, Cu, Zn, Ca and Mg is 49. 39-67. 35 μg·g-1 , 10. 50-14. 15 μg·g-1 , 10. 61-13. 63μg·g-1 , 42. 22-52. 82μg·g-1 , 6. 78-9. 42 mg·g-1 and 4. 87-5. 37 mg·g-1 , respectively. In general, there is no significant difference in length, width, water content and soluble protein content in seeds from different populations, while there is significant difference in thickness, hundred-grain mass, soluble sugar content, crude fat content and mineral element ( including Fe, Mn, Cu, Zn, Ca and Mg) contents in seeds.