摘要
为了研究干旱胁迫对芸豆种子萌发的影响,以“60天还家”芸豆种子为材料,采用培养皿滤纸萌发的方法,以不同浓度PEG（聚乙二醇）溶液模拟干旱条件,对芸豆种子萌发特性进行研究。结果表明,不同浓度的PEG干旱胁迫对芸豆种子萌发产生不同程度影响,低浓度（5%~15%）的胁迫作用小,高浓度（15%以上）的胁迫作用大。芸豆种子萌发期的不同指标对不同浓度胁迫反应不同,尤其种子发芽指数及种子活力指数的反应最为显著。15%PEG浓度对芸豆种子各指标均产生显著抑制,是PEG模拟芸豆干旱胁迫的有效浓度,可作为芸豆萌发期利用PEG进行抗旱性鉴定的试验浓度。
In order to study the effects of drought stress on germination of kidney bean seed,the kidney bean seeds of cultivar ＇Sixty Days Huan Jia＇ were evaluated under simulated drought stress condition by using different concentrations of polyethylene glycol （PEG）in vitro. The results indicated that the different PEG concentrations had different effects on the germination of kidney bean seeds. Low concentrations（5%-15%）had the little effects on kidney bean seeds, while high concentrations（〉15%）had a large effects on kidney bean seeds. The response of different indexes on PEG stress was different during germination period of kidney bean seeds, the response of germination index and vigor index. When the concentration of PEG was up to 15% ,all kinds of indexes were significantly inhibited. Therefore, 15% PEG was an effective concentration for simulated drought stress against to kidney bean seeds, and would be used as an appropriate experimental concentration for the drought tolerance evaluation of kidney bean.
出处
《黑龙江八一农垦大学学报》
2015年第5期1-5,共5页
journal of heilongjiang bayi agricultural university
基金
国家"十二五"科技支撑项目(杂豆高效生产关键技术研究与示范:2014BAD07B05)
国家科技支撑计划项目子课题(黑龙江省适宜杂豆品种(系)的筛选及良种繁育技术研究:2014BAD07B05-H02)
国家杂粮工程技术研究中心建设项目(2011FU125X07)
黑龙江农垦总局科技攻关项目(黑龙江垦区芸豆高产栽培技术研究)
关键词
芸豆
PEG胁迫
种子萌发
kidney bean
polyethylene glycol stress
seed germination
