摘要
以蓝叶忍冬(Lonicera korolkowi‘Zabclii’)为材料,研究了2种不同浓度(50、100 mg·L-1)的生长素吲哚乙酸(IAA)、吲哚丁酸(IBA)和萘乙酸(NAA)在不同处理时间(30、60 min),对蓝叶忍冬生根部位、根数和根长的影响。结果表明,3种生长素对蓝叶忍冬枝条扦插生根都产生了一定的影响,IAA处理增加蓝叶忍冬的生根率和根数,但抑制根的伸长。NAA处理对蓝叶忍冬生根效果不明显,仅对根长有一定的促进作用。与对照相比,50 mg·L-1IBA处理60min显著增加了蓝叶忍冬的生根率和根数(P<0.05)。另外,3种生长素对蓝叶忍冬枝条生根部位也有影响,3种生长素处理都可以增加皮层生根数,对切口愈伤组织的生根有一定的抑制作用。其中IBA处理对生根部位影响的效果最明显,100 mg·L-1处理30 min可以显著提高皮层生根数并抑制愈伤组织生根(P<0.05)。综合比较3种生长素促进生根的效果,IBA最好,IAA和NAA次之。
Effects of different concentrations（ 50,100 mg·L-1） of three auxins： indole-3-acetic acid（ IAA）,indole-3-butyric acid（ IBA） and nappthylacetic acid（ NAA） on rooting position,root number and root length of plant were studied on Lonicera korolkowi ‘Zabclii＇with different time treatment（ 30,60 min）. The results showed that all three auxins promoted cutting rooting. IAA increased rooting rate and root number but inhibited root length in L. korolkowi‘Zabclii＇. The effect of NAA on the promotion of rooting was not significant in L. korolkowi‘Zabclii＇,which only increased the root number（ P〈0. 05）. Compared with control treatments,50 mg·L-1IBA treatments exhibited the best effect on rooting in three auxins,which increased rooting rate and root number with treatments of 60 min. In addition,three auxins affected rooting position of L. korolkowi ‘Zabclii＇,which increased the root number in cortex and inhibited the root number in callus. IBA affected the root position significantly（ P〈0. 05）. 100 mg·L-1IBA increased the root number of cortex but decreased the root number of callus with treatments of 30 min. Among the effects of three auxins,IBA had the best effect on rooting than IAA and NAA.
出处
《草业科学》
CAS
CSCD
北大核心
2016年第1期61-66,共6页
Pratacultural Science
基金
国家自然基金(31160398
31560563)
中国博士后科学基金项目(20100470887
2012T50828)
教育部科学技术研究重点项目(211182)
教育部高校博士点新教师基金(20116202120005)
甘肃省高校基本科研业务费项目
甘肃省自然科学基金(1308RJZA179)
兰州市科技局科技攻关项目(2011129)
