Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings

Hou, Ping-Cheng; Lin, Kuan–Hung; Huang, Yen-Jung; Wu, Chun-Wei; Chang, Yu‐Sen

doi:10.1590/s0102-053620200207

Cited by 6 publications

(8 citation statements)

References 24 publications

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“…Table 4 showed that there was no significant difference in any of the treatments of IBA and BioGroe applied to Bignay cuttings. This conforms with the findings where IBA, NAA and their combination treatments were not significant in rooting azalea cuttings (27).…”

Section: Percent Rootingsupporting

confidence: 92%

Response of ‘Bignay’ [Antidesma bunius (Linn.) Spreng] to cutting origins, IBA and BioGroe treatments

2021

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The response of ‘Bignay’ [Antidesma bunius (Linn.) Spreng] to the cutting origins and different levels of plant bio-regulators consist of Indole-3-butyric Acid (IBA) and Biogroe treatments were investigated by means of 3 x 9 factorial experiment in Completely Randomized Design (CRD) using an automated mist propagator. Two hundred sixteen (216) healthy seedlings containing 9 nodes each were used in the study. Results revealed that cutting origins significantly increased shoot length but have no influence on the root number, percent rooting and percent survival. The cuttings originated from the bottom portion of the stem recorded the longest mean in terms of shoot length (12.48 mm) including the highest percent survival and percent rooting (82.41%). Highest mean number of roots were observed on the top cuttings (1.93). Indole-3-butyric Acid (IBA) and Biogroe treatments on cuttings have no effects on the different parameters evaluated. The interaction effect between cutting origins and IBA/Biogroe treatments significantly increased the percent rooting and percent survival except the shoot length and root number of Bignay cuttings. Overall, the findings inferred that A. bunius can be propagated by any cutting origin derived from the main stem of the donor plants tested. Cuttings can effectively be induced to produce roots and survive and can be economically mass propagated even without the application of different concentrations of IBA and BioGroe.

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Section: Percent Rootingsupporting

confidence: 92%

Response of ‘Bignay’ [Antidesma bunius (Linn.) Spreng] to cutting origins, IBA and BioGroe treatments

2021

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“…This was also observed here in two barberry cultivars (Berberis thunbergii L. 'Maria' and 'Red Rocket') where root length increased due to spraying the cuttings with water IBA solution. Additionally, Hou et al [25] reported an increase in root number and length in azalea cuttings. In Rhododendron austrinum (Small) Rehder.…”

Section: Discussionmentioning

confidence: 97%

The Effect of Brassinosteroids on Rootting of Stem Cuttings in Two Barberry (Berberis thunbergii L.) Cultivars

2021

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Brassinosteroids are a group of over seventy steroid compounds whose discovery in lower and higher plant organisms created new possibilities of plant growth control. The aim of the work was to evaluate the effect of two brassinosteroids: brassinolide (BL) and 24-epibrassinolide (24epiBL) as compared to the auxin rooting enhancer indole-3-butyric acid (IBA), on the rooting of stem cuttings in two Thunberg’s barberry cultivars ‘Maria’ and ‘Red Rocket’. The cuttings were sprayed with water solutions of growth regulators: IBA (200 mg·L−1), 0.05% BL or 24epiBL, as well as with a combination of each of brassinosteroids with the auxin while the control cuttings were sprayed with water. In both cultivars brassinosteroids positively affected a degree of rooting and root length. Their application resulted in elevated contents of chlorophyll, total soluble sugars, free amino acids, hydrogen peroxide and catalase activity. Brassinosteroids were more effective when combined with the auxin than when used singly.

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“…CF and GD were not used on RD III because of the large prop root diameter, and we only conducted RP for RD IV as the root diameters were too large to do CF or GD. We adopted Fractional 3-Factorial Designs (Plackett-Burman design) to test 24 relevant treatment combinations for their main effects [30]. The detailed treatment combinations were in listed in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…We used these 24 sets of relevant treatment combination values to make inference on the whole 48 values for the main effect of the 3 factors as a fractional factorial experiment [30,32]. Analysis of variance (ANOVA) was performed using R Studio version 1.2.1335 (R tools technology.…”

Section: Methodsmentioning

confidence: 99%

The Induction of Adventitious Roots Regeneration before Transplanting Rootless Ficus elastica Heritage Tree

Lo³

et al. 2020

Forests

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Heritage trees carry both botanical and historical value for a city’s resilience and sustainability and hence are precious and unique. Their transplant is costly and very rare due to tremendous cost and 100% survival requirement by law. Rootless transplant is even more detrimental to the heritage tree due to removal of roots infected by brown root rot (BRR) before transplanting. This study examined the adventitious roots (AR) induction ability of the Ficus elastica Roxb. heritage tree infected with BRR. The experimental design considered three factors: root diameter (RD), wounding method (WM), and auxin solution on aerial roots under fractional factorial experiment in completely randomized design (CRD). There were four RD groups: RDI (RD < 2 cm), RDII (2 ≤ RD ≤ 4.3 cm), RDIII (4.3 < RD ≤ 22), and RDIV (RD > 22); three WMs: cutting off (CF), girdling (GD), and rectangular shape peeling (RP) of aerial roots; and three auxin solutions: 2000 mg·L−1 IBA(Indole-3-butyric acid) (2B), 2000 mg·L−1 IBA + 2000 mg·L−1 NAA(1-Naphthaleneacetic acid) (2NB), and 4000 mg·L−1 IBA (4B) plus water as control (C). The number of rooting wounds, number of roots, and the mean length of the three longest adventitious roots in each wound were recorded to evaluate the AR rooting performance. Twenty four treatment combinations including 328 wounds were tested. The results showed that rooting ability was significantly correlated with RD and WM. Smaller RDs had better rooting and declined with increased RDs. CF had the best rooting followed by GD and then RP. Auxin solution did not significantly affect the rooting ability. It may be due to the abundant endogenous auxin in the heritage tree, which mitigated the effect of exogenous auxin for AR induction. We conclude that cutting off small-diameter aerial roots is the best approach to induce ARs from rootless F. elastica heritage trees to enhance transplantation success.

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Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings

Cited by 6 publications

References 24 publications

Response of ‘Bignay’ [Antidesma bunius (Linn.) Spreng] to cutting origins, IBA and BioGroe treatments

Response of ‘Bignay’ [Antidesma bunius (Linn.) Spreng] to cutting origins, IBA and BioGroe treatments

The Effect of Brassinosteroids on Rootting of Stem Cuttings in Two Barberry (Berberis thunbergii L.) Cultivars

The Induction of Adventitious Roots Regeneration before Transplanting Rootless Ficus elastica Heritage Tree

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