Zeatin 玉米素

中文名称：玉米素英文名称：zeatin 其他名称：玉米因子(maize factor) 定义：从玉米嫩籽中分离出的第一种存在于高等植物中的天然细胞分裂素。

中文名称：玉米素 　　
中文别名：6-反式-4-羟基-3-甲基-丁-2-烯基氨基嘌呤 　　
英文名称：trans-Zeatin 　　
英文别名：6-(4-Hydroxy-3-methylbut-2-enylamino)purine 　　
纯度：99% 　　
CAS号：1637-39-4 　　
分子式：C10H13N5O 　　
分子量：219.24

性状描述： 白色结晶或粉末，溶于水，溶于醇和DMF。
一种天然的细胞分裂素。它是从甜玉米灌浆期的籽粒中提取并结晶出的第1个天然细胞分裂素。已能人工合成。

物理参数
熔点:210℃

用途说明
1．促进愈伤组织发芽(须和生长素配用)，浓度 1mg/L。
2．促进座果，玉米素100ppm+GA3 500ppm+NAA20ppm，花后10、25、40天喷果。
3．叶菜，201mg/L喷洒，可延缓叶片发黄。另外，对一些作物种子进行处理，可促进发芽；苗期处理，有促进生长作用。

贮藏说明
储存温度：-20℃

危险说明
危险标志：Xi
安全等级: S22-24/25

Zeatin

CAS number 1637-39-4 Y
PubChem 449093
ChemSpider 395716
IUPAC name：(E)-2-methyl-4-(7H-purin-6-ylamino)but-2-en-1-ol
Class: Cytokinin

Properties
Molecular formula C10H13N5O
Molar mass 219.24 g mol−1
Appearance Off-white to yellow crystalline powder
Melting point 208−210 °C

Solubility in 1M NaOH Soluble
Hazards
LD50 2200 mg/kg (mouse, transperitoneal)

Zeatin is a plant hormone derived from the purine adenine. It is a member of the plant growth hormone family known as cytokinins. Zeatin was first discovered in immature corn kernels from the genus Zea. It promotes growth of lateral buds and stimulates cell division to produce bushier plants if sprayed on meristems.[citation needed]

Zeatin and derivatives were discovered to be the primary active ingredient in coconut milk, which has long been known to actively induce plant growth.[1]

Zeatin has been reported to have several in vitro anti-aging effects on human skin fibroblasts.[2]
Toxicology： The acute transperitoneal toxicity in mice (LD50) is 2200 mg/kg.

Application
1.Promotes callus initiation when combined with auxin, concentration 1 ppm.
2.Promotes fruit set. Zeatin 100 ppm + GA3 500 ppm + NAA 20 ppm, sprayed at 10th, 25th, 40th day after blossom.
3.Retards yellowing for vegetables, 20 ppm, sprayed.
4.Causes auxiliary stems to grow and flower.
It can also be applied to stimulate seed germination and seedling growth.