甜菊是一种新的糖料和药用植物,原产南美巴拉圭。叶中含有甜菊甙,比蔗糖甜300倍,甜菊甙 A_(?)比蔗糖甜450倍。甜菊是菊科植物,适应性较强,在我国东经90°23′—129°,北纬46°40′—22°28′范围内,南北各省均可种植,亩产干叶250—500斤,亩收入可达千元以上。甜菊制品特性:一是味质好,与蔗糖相似;二是安全性高,无毒性;三是加工性能稳定;四是用途广,可以食用和医用。甜菊可用种子、插条和分根繁殖,又是多年生草本植物,是培育多倍体的好材料。近年来我校开展了甜菊多倍体育种工作,在我国首 Stevia is a new sugar and medicinal plants, native to South America, Paraguay. Leaf contains stevioside, 300 times more sweet than sucrose, stevioside A_ (?) 450 times more sweet than sucrose. Stevia is a comfrey plant with strong adaptability. It can be planted in all provinces in the north and the south in the range of 90 ° 23’-129 ° East longitude and 46 ° 40’-22 ° 28 ° north latitude, with 250-500 kg dry mu per mu, Mu income up to thousands of dollars. Stevia products characteristics: First, good taste, and sucrose similar; second, high safety, non-toxic; Third, the processing performance and stability; Fourth, the wide use, you can eat and medical. Stevia seed, cuttings and roots can be multiplied, but also a perennial herb, is a good material for cultivating polyploid. In recent years, our school carried out the work of stevia polyploid breeding, the first in our country