Auxin IAA-Induced <i>Azolla</i> Sporulation

XU Guozhong; ZHENG Xiangli; WANG Junhong; DENG Sufang; YANG Youquan; YING Zhaoyang

doi:10.19303/j.issn.1008-0384.2021.06.014

Volume 36 Issue 6

Jun. 2021

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Article Navigation > Fujian Journal of Agricultural Sciences > 2021 > 36(6): 713-718

XU G Z, ZHENG X L, WANG J H, et al. Auxin IAA-Induced Azolla Sporulation [J]. Fujian Journal of Agricultural Sciences，2021，36（6）：713−718 doi: 10.19303/j.issn.1008-0384.2021.06.014

Citation:

XU G Z, ZHENG X L, WANG J H, et al. Auxin IAA-Induced Azolla Sporulation [J]. Fujian Journal of Agricultural Sciences，2021，36（6）：713−718 doi: 10.19303/j.issn.1008-0384.2021.06.014

XU G Z, ZHENG X L, WANG J H, et al. Auxin IAA-Induced Azolla Sporulation [J]. Fujian Journal of Agricultural Sciences，2021，36（6）：713−718 doi: 10.19303/j.issn.1008-0384.2021.06.014

Citation:

XU G Z, ZHENG X L, WANG J H, et al. Auxin IAA-Induced Azolla Sporulation [J]. Fujian Journal of Agricultural Sciences，2021，36（6）：713−718 doi: 10.19303/j.issn.1008-0384.2021.06.014

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Auxin IAA-Induced Azolla Sporulation

doi: 10.19303/j.issn.1008-0384.2021.06.014

XU Guozhong^{1, 2
,},
ZHENG Xiangli^{1, 2},
WANG Junhong^{1, 2},
DENG Sufang^{1, 2},
YANG Youquan^{1, 2},
YING Zhaoyang^{1, 2}

1.
Agricultural Ecology Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian　350013, China
2.
National Azolla Germplasm Resource Center, Fuzhou, Fujian　350013, China

Received Date: 2021-01-18
Rev Recd Date: 2021-05-24

Available Online: 2021-06-06

Publish Date: 2021-06-28

Abstract

Abstract

Objective Auxin IAA-induced sporulation of Azolla was investigated. Method Under natural conditions in a netted chamber, auxin IAA solutions in concentration of 0 (control), 1, 5, 10, 15, or 20 μg·mL⁻¹ was sprayed once-a-week on Azolla filiculoides Lamarck 1001, A. caroliniana wild 3001, and A. microphylla Kaulfus 4018 during vegetative growth period for the duration until sporocarps appeared . Result After five months of spraying with 1, 5, or 10 μg·mL⁻¹ IAA solution, sporocarps began to form only on Azolla 1001. The sporulation rate, spore count, and female/male ratio were 15.0%, 6.31, and 0.62 ∶ 1, respectively, under the 5 μg·mL⁻¹ application, which significantly differed from 6.3%, 4.12, and 0.53 ∶ 1, respectively, under the 10 μg·mL⁻¹ application, 4.7%, 3.90, and 0.51 ∶ 1, respectively, under the 1 μg·mL⁻¹ application, and control. In addition, the size and C/N ratio of Azolla 1001 significantly increased by the spraying, as compared to control, whereas none observed on the other two ferns. Conclusion Auxin IAA could induce the sporulation of A. filiculoides Lamarck 1001. Spraying IAA at the concentration of 5 μg·mL⁻¹ on the ferns appeared feasible for field application.
- hormone,
- auxin,
- Azolla,
- sporulation,
- induction

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References(30)

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