摘要
以兔眼蓝浆果品种‘粉蓝’为试材,研究不同质量浓度(0、3000、5000、7000、9000 mg/L)吲哚丁酸(IBA)处理对‘粉蓝’嫩枝扦插生根及内源激素变化动态的影响。结果表明:兔眼蓝浆果品种‘粉蓝’嫩枝插条生根能力随外源IBA浓度增加而增强;扦插过程中适宜浓度内源IAA及IAA/GA有利于插条愈伤组织和根原基分化形成,高浓度内源GA抑制‘粉蓝’插条不定根的形成;在愈伤组织及根原基形成期ZT含量降低、IAA/ZT升高促进根原基分化形成,而在生根中后期高浓度ZT、低IAA/ZT有利于细胞分裂和不定根伸长生长。ABA及IAA/ABA在生根过程中没有明显变化。
The dynamics of endogenous hormones in softwood cuttings of rabbiteye blueberry （Vaccinium ashei Reade） cuhivar ＇Powderblue＇, treated by five levels of indolebutyric acid（IBA） （0, 3000, 5000, 7000 and 9000 mg/L） were studied during adventitious root formation. The results showed that exogenous IBA increased the rooting ability of softwood cuttings of rabbiteye blueberry. Suitable levels of endogenous IAA and IAA/GA were beneficial to the formation of callus tissue and root primordium, and endogenous GA at higher level inhibited formation of adventitious root in cuttings. The function of endogenous ZT and IAA/ZT were different during different cutting periods. Low level of endogenous ZT and high level of IAA/ZT promoted differentiation and formation of root primordium during the formation of callus tissue and root primordium stage. High level of endogenous ZT and low level of IAA/ZT favored the elongation and growth of adventitious roots in cuttings. The changes of ABA and IAA/ABA were not obvious.
出处
《中国农学通报》
CSCD
2014年第16期117-122,共6页
Chinese Agricultural Science Bulletin
基金
国家农业部公益性行业(农业)科研专项"小浆果产业技术研究与试验示范"(201103037)
江苏省农业科技自主创新项目"南方高丛蓝浆果早熟新优品系的选育"[CX(11)1011]
关键词
兔眼蓝浆果
嫩枝扦插
内源激素
不定根
IBA
rabbiteye blueberry
softwood cutting
endogenous hormones
adventitious root
indolebutyric acid
