NaCl胁迫对芹菜种子萌发和幼苗生长的影响  

Effects of NaCl Stress on Seeds Germination and Seedling Growth of Celery Varieties

作　　者：曹玲[1] 刘溪静[1] 李楠茜[1] 李莹莹[1] 王倩[1] 

机构地区：[1]中国农业大学农学与生物技术学院,设施蔬菜生长发育调控北京市重点实验室,北京100193

出　　处：《北方园艺》2013年第15期20-23,共4页Northern Horticulture

基　　金：国家公益性行业(农业)科研专项资助项目(201203003);现代农业产业技术体系北京市叶类蔬菜创新资助项目(2069999)

摘　　要：以"京芹一号"、"博克"、"加州王"、"夏芹"、"日本小香芹"5个芹菜品种为试材,研究了0、30、60、90、120mmol/L的NaCl溶液胁迫对芹菜种子萌发及幼苗生长的影响。结果表明:随着NaCl浓度的升高,盐胁迫对芹菜种子萌发和幼苗生长具有抑制、促进/抑制双重作用,30mml/L NaCl浓度对部分品种的种子萌发和幼苗生长均具有促进作用;各指标的相对盐害率表现出较大差异,活力指数、根长、鲜重、干重对盐胁迫反应敏感,发芽率、发芽势、发芽指数不敏感;根据综合盐害率,在种子萌发和幼苗生长初期,"博克"和"夏芹"的耐盐性最强,"京芹一号"、"日本小香芹"耐盐性最弱。Taking ＇Jingqinyihao＇, ＇Boke＇, ＇Jiazhouwang＇,＇ Ribenxiaoxiangqin＇ ,＇ Xiaqin＇ five celery varieties as materials, the effects of NaC1 stress（0,30,60,90,120 mmol/L NaC1） on germination and seedling growth stage were studied. The results showed that the seed germination and seedling growth were inhabited, promoted/inhabited as the saltconcentration increased. Moreover,NaC1 stress （30 retool/L） had beneficial effect on germination and seedling growth. The response of index exhibited significant differences on relative salt damage rate. The most sensitive index were vigor index （VI） ,radical length （RL） ,hypocotyl length （HL） ,fresh weight （FW） and dry weight （DW） and the least sensitive index were seed germination percentage （GP）,germination energy （GE） and germination index （GI）. According to the comprehensive salt damage rate, ＇Bok＆ and ＇Xiaqin were the most resistant,and ＇Jingqinyihao＇ and ＇Xiaoxiangqin were the most sensitive varieties at germination stage and early seedling growth.

关 键 词：NACL胁迫 耐盐性 芹菜 种子萌发 幼苗生长 

分 类 号：S636.3[农业科学—蔬菜学]