Comparative Study on the Endogenous Hormone Contents in Cuttings of <i>Populus yunnanensis</i> and <i>P. tomentosa</i>

Lei YU; Xiaofan HE; Anpei ZHOU; Peihua GAN; Xinlian ZOU; Dan ZONG; Chengzhong HE

doi:10.12101/j.issn.1004-390X(n).201805048

JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science） > 2018 > 33(4): 715-720. > DOI: 10.12101/j.issn.1004-390X(n).201805048

Lei YU, Xiaofan HE, Anpei ZHOU, et al. Comparative Study on the Endogenous Hormone Contents in Cuttings of Populus yunnanensis and P. tomentosa[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2018, 33(4): 715-720. DOI: 10.12101/j.issn.1004-390X(n).201805048

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Comparative Study on the Endogenous Hormone Contents in Cuttings of Populus yunnanensis and P. tomentosa

Lei YU^1,2,#,,
Xiaofan HE^1,2,#,,
Anpei ZHOU^1,2,
Peihua GAN^1,2,
Xinlian ZOU^1,2,
Dan ZONG^1,2,
Chengzhong HE^1,2,3, ,

1.
Key Laboratory for Forest Genetic and Tree Improvement & Propagation in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, China
2.
Key Laboratory of Biodiversity Conservation in Southwest China, State Forestry Administration, Southwest Forestry University, Kunming 650224, China
3.
Key Laboratory of Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China

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Received Date: May 19, 2018
Revised Date: June 04, 2018
Available Online: July 23, 2018
Published Date: June 30, 2018

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Abstract

Abstract

Purpose Endogenous hormones contents in cortices of the cutting base of Populus yunnanensis and P. tomentosa were tested to investigate the effect of endogenous hormones on adventitious root formation of cuttings.

Methods The cuttings of easy-to-root P. yunnanensis and difficult-to-root P. tomentosa were cultured in soil. High performance liquid chromatography (HPLC) was used to examine the dynamic changes of IAA, ABA, GA₃ and ZT in cortices of the cutting base.

Results The cuttings of P. yunnanensis were 7 d for forming callus and 21 d for formatting adventitious roots, while P. tomentosa had callus in 21 d and failed rooting by 49 d. The contents of IAA and ZT in cortices of the cutting base of P. yunnanensis were higher than those in cortices of the cutting base of P. tomentosa, but the difference was not significant (P>0.05). However, the ABA and GA₃ contents in cortices of the cutting base of P. tomentosa were significantly higher than those in cortices of the cutting base of P. yunnanensis throughout the rooting process (P<0.01).

Conclusion IAA and ZT were not the main factors to affect the adventitious root formation, but the high contents of ABA and GA₃ in cortices of the cutting base could be the main inducement of cuttings of P. tomentosa failed to take adventitious roots.
- Populus yunnanensis,
- Populus tomentosa,
- cuttings rooting,
- endogenous hormones contents

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References (33)

References

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Comparative Study on the Endogenous Hormone Contents in Cuttings of Populus yunnanensis and P. tomentosa

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