Exogenous auxins and leaf area affect the rooting of Xylopia aethiopica (Dunal A. Rich.) stem cuttings

IF 1.1 Q4 ENVIRONMENTAL STUDIES

Forests, Trees and Livelihoods Pub Date : 2019-09-29 DOI:10.1080/14728028.2019.1670099

D. A. Mbibong, G. Kanmegne, Fotso

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引用次数: 2

Abstract

ABSTRACT The amenability of Xylopia aethiopica to vegetative propagation was assessed. Twelve auxin treatments and three ranges of leaf area were investigated for their effects on the propagation of stem cuttings in non-mist propagator. Results showed that the highest mortality rate (58.3%) was recorded with leafless cuttings while the lowest (5%) was recorded with 25–35 cm2 leaf area cuttings. There was no linearity in the relationship between auxin concentration and the mortality rate. Cuttings with 10–15 cm2 and those with 25–35 cm2 leaf areas rooted at higher percentages (74.5% and 73.6%, respectively) than leafless cuttings which rooted at 32%. Considering all leaf areas together the highest rooting percentage (90%) was recorded with 1% IBA powder while the lowest (22.2%) was recorded with the control. Whilst leaf area did not affect roots count, the highest mean number of roots per cutting (7.6) was recorded with 1% IBA powder. IBA powder treatment at 1% and 25–35 cm2 leaf area resulted in the highest mean root biomass (520.6 and 480.5 mg/cutting, respectively). The use of cuttings with 25–35 cm2 leaf area and treatment with 1% (w/w) IBA powder is thus recommended for vegetative propagation of X. aethiopica through stem cutting.

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外源生长素和叶面积对木霉茎插穗生根的影响

摘要评价了异尖木对营养繁殖的适应性。研究了12种生长素处理和3个叶面积范围对茎插条在无雾繁殖器中繁殖的影响。结果显示，无叶插条的死亡率最高（58.3%），而叶面积为25-35 cm2的插条死亡率最低（5%）。生长素浓度与死亡率之间没有线性关系。10–15 cm2和25–35 cm2叶面积的插条生根率（分别为74.5%和73.6%）高于生根率为32%的无叶插条。考虑到所有叶面积，1%IBA粉的生根率最高（90%），而对照的生根率最低（22.2%）。虽然叶面积不影响根数，但用1%IBA粉末记录的每次切割的平均根数最高（7.6）。叶面积为1%和25-35 cm2的IBA粉末处理的平均根生物量最高（分别为520.6和480.5 mg/株）。因此，建议使用叶面积为25-35 cm2的插条，并用1%（w/w）的IBA粉末处理，以通过茎切进行异尖线虫的营养繁殖。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Forests, Trees and Livelihoods Agricultural and Biological Sciences-Forestry

CiteScore

2.20

自引率

0.00%

发文量

期刊介绍： Forests, Trees and Livelihoods originated in 1979 under the name of the International Tree Crops Journal and adopted its new name in 2001 in order to reflect its emphasis on the diversity of tree based systems within the field of rural development. It is a peer-reviewed international journal publishing comments, reviews, case studies, research methodologies and research findings and articles on policies in this general field in order to promote discussion, debate and the exchange of information and views in the main subject areas of.