کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5762998 1625148 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of rooting media, plant growth regulators and clone on rooting potential of honeybush (Cyclopia subternata) stem cuttings at different planting dates
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
The effect of rooting media, plant growth regulators and clone on rooting potential of honeybush (Cyclopia subternata) stem cuttings at different planting dates
چکیده انگلیسی


- C. subternata clones varied in rooting potential.
- Growth media Bark mix and 3mix produced the highest rooting potential.
- Growth regulators Seradix® B2 and Seradix® B3 produced the highest rooting potential.
- Autumn and early summer are optimum collection times for propagation of cuttings.
- Survival of cuttings is poorest in winter.

Cyclopia spp. are shrubs indigenous to the Eastern and Western Cape provinces of South Africa that are used for a herbal infusion known as honeybush tea. Currently, a large amount of honeybush is still wild harvested; this imposes a risk of biodiversity loss, shortage of plant material and extinction of natural resources due to unsustainable harvesting. Therefore, in order to improve the plant material and relieve pressure on wild populations, a study aimed at optimising propagation and adventitious rooting techniques of honeybush stem cuttings was conducted. In this study, four clones of Cyclopia subternata were set in three different rooting media, with three concentrations of IBA growth regulators at six planting dates according to a randomised complete block design, to determine the effect on rooting. The data recorded were analysed using an analysis of variance (ANOVA). This study showed significant differences in the rooting potential of the four clones tested. The highest rooting and survival percentage, root number and root length were experienced when cuttings were propagated in rooting media Bark mix and 3mix, treated with growth regulators Seradix® B2 and Seradix® B3. Cuttings grown in rooting medium Peat mix and with growth regulator Dip & Root™ resulted in the lowest rooting and survival percentage. The ideal time to set cuttings was during March and November with clones SGD7 and SGD9 producing the highest rooting and survival percentages. The lowest rooting percentage was recorded during February. Clone selections SGD1 and SGD7 had the highest rooting success followed by SGD9, and clone SGD6 had the lowest rooting percentage. Cyclopia spp. may be successfully propagated vegetatively by stem cuttings at different planting dates in order to improve plant material and quality of honeybush.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: South African Journal of Botany - Volume 110, May 2017, Pages 75-79
نویسندگان
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