The influence of Hoagland solutions , complete , Lacking for some Macro and Micro – nutrients and that substituted by Silicon in terms of free-auxin in primary leaves of Mung bean cuttings | ||
| journal of kerbala university | ||
| Article 1, Volume 10, Issue 1, April 2014, Pages 269-279 PDF (0 K) | ||
| Abstract | ||
| Mungbean (Phasealus aureas Roxb.) cuttings were treated with complete Hoagland solution (CHS) developed an increase (114%) of adventitious roots and (65.8%) of these root lengths compared to deionized H2O (control). In addition , results showed that rooting response was decreased in all Hoagland solutions lacking for (HSLF) Macro- and Micro – elements , except the significant increase of (10.03%) in (HSLF) boron against a significant decrease of 51.6% and 57.8% in (HSLF) (K) and (Zn) respectively , compared to deionized H2O. Moreover,in terms of the rate of root lengths, the absence of any Macro-& Micro– elements has significantly a negative impact on the root length at probability level 1%,except the absence of (P). However , application of Silicon (one of beneficial elements) into the componenets of Hoagland solution did not affect significantly the number of developed roots , but it decreased (47.2%) from their lengths. It was the same with all HSLF any element , and provided with (Si) as alternative. In addition the later being significantly effective in the number of roots for all HSLF any elements except the increase (14.7%) in cuttings treated with HSLF (Mn) and the decrease (38.1% , 35% and 19.1%) in HSLF (N) , (K) and (Ca) respectively. On the other hand , the hormonal analysis showed that cuttings treated with (CHS) for 24 hr. has increased free-auxin content in primary leaves with (11.8%) compared to deionized H2O. However , supplying of (HSLF) each element caused significant decreased (5%) except the absence of (Mo , B , Cl and Mn) which caused an increase of IAA content to (54.1 , 12.7 , 10.8 and 46.1)% respectively compared to the control (CHS). Finally , application of Si into the component of Hoagland solution was significantly decreased free – IAA compared to CHS. The decrease was reflected on all HSLF any Macro - & Micro – elements in which any of them was substituted by silicon except the significant increase in HSLF (Zn & Mo) which was already substituted by Si that raised remarkable increase of (111.6% and 161.6%) respectively . | ||
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