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Gibberellic acid and 6-benzyladenine reduce time to flowering and improve flower quality of Laelia anceps Cover

Gibberellic acid and 6-benzyladenine reduce time to flowering and improve flower quality of Laelia anceps

Open Access
|Apr 2021

Figures & Tables

Figure 1

Average D/T and N/T;°C, percentage of D/RH and N/RH, and PPF; μmmol · m−2 · s−1, by experimental period (2017 to 2019). D/T, day-time temperature; D/RH, day-time relative humidity; N/T, nights temperatures; N/RH, night relative humidity; PPF, photosynthetic photon flux.
Average D/T and N/T;°C, percentage of D/RH and N/RH, and PPF; μmmol · m−2 · s−1, by experimental period (2017 to 2019). D/T, day-time temperature; D/RH, day-time relative humidity; N/T, nights temperatures; N/RH, night relative humidity; PPF, photosynthetic photon flux.

Figure 2

Percentage of visible floral induction of L. anceps in three experimental periods, by effect of different doses of BA and GA3. BA, 6-benzyladenine; GA3, gibberellic acid. *Indicates an abortion in treatment.
Percentage of visible floral induction of L. anceps in three experimental periods, by effect of different doses of BA and GA3. BA, 6-benzyladenine; GA3, gibberellic acid. *Indicates an abortion in treatment.

Figure 3

Survival curves represent the proportion of L. anceps plants induced to flowering per day, with the effect of different doses of PGRs: GA3 and BA, in three experimental periods. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.
Survival curves represent the proportion of L. anceps plants induced to flowering per day, with the effect of different doses of PGRs: GA3 and BA, in three experimental periods. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.

Figure 4

Survival curves represent the proportion of L. anceps plants that reached anthesis per day, in each experimental period (A), and by effect of treatments in the global analysis period (B), with the application of different doses of PGRs: GA3 and BA. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.
Survival curves represent the proportion of L. anceps plants that reached anthesis per day, in each experimental period (A), and by effect of treatments in the global analysis period (B), with the application of different doses of PGRs: GA3 and BA. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.

Figure 5

Survival curves represent the proportion of L. anceps plants that reached anthesis daily, in each experimental period: 2017 (A), 2018 (B) and 2019 (C), by the effect of different doses of PGRs: GA3 and BA. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.
Survival curves represent the proportion of L. anceps plants that reached anthesis daily, in each experimental period: 2017 (A), 2018 (B) and 2019 (C), by the effect of different doses of PGRs: GA3 and BA. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.

Figure 6

Survival curves represent the proportion of L. anceps plants with live flowers per day, in each experimental period (A), and by effect of treatments in the period 2017 (B), with the application of different doses of PGRs: GA3 and BA. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.
Survival curves represent the proportion of L. anceps plants with live flowers per day, in each experimental period (A), and by effect of treatments in the period 2017 (B), with the application of different doses of PGRs: GA3 and BA. Differences in the survival curves are significant with the log-rank test (p ≤ 0.05). BA, 6-benzyladenine; GA3, gibberellic acid; PGRs, plant growth regulators.

Means of morpho-floral quality parameters between one experimental period and the next, by the application of different doses of BA (mg · L−1) and GA3 (mg · L−1) in L_ anceps_

PGRsDosesFlower lifeNumber of flowers stemLength of flowerWidth of flower




201720182019201720182019201720182019201720182019
BA9.521.50 a24.75 a25.00 a1.17 a1.75 a1.88 a7.82 a9.13 a8.73 a8.28 a7.35 a6.98 a
19.026.06 a22.25 a24.25 a1.32 b2.38 a1.91 ab8.57 a9.48 a9.41 a9.03 a7.56 b6.93 b
28.525.31 a21.25 a19.88 a0.94 b2.00 a2.13 a11.05 a8.45 b8.46 b8.75 a7.56 ab6.85 b
GA340026.14 a25.31 ab18.86 b1.99 a1.82 a1.57 a10.13 a9.93 a9.39 a7.62 a7.85 a7.46 a
60022.63 a20.57 a20.00 a1.25 b2.52 a1.82 b9.80 a9.47 a8.78 a7.83 a7.65 a7.59 a
80023.71 ab25.57 a19.57 b1.43 a1.86 a1.71 a8.91 ab8.21 b9.34 a6.69 a6.83 a7.04 a
BA + GA32.37 + 10026.25 a19.15 b18.35 b1.88 b3.02 a2.02 b9.55 a8.80 a8.13 a7.15 a6.61 a6.44 a
4.75 + 15027.67 a20.29 a21.17 a1.49 b3.23 a1.87 ab9.85 a8.21 a9.52 a8.32 a6.78 b8.09 ab
7.12 + 20025.43 a20.86 a20.57 a1.71 a2.14 a1.29 a10.16 a8.81 a8.43 a7.64 a6.37 a6.99 a
Control0.018.33 a19.88 a21.75 a1.32 a1.50 a1.50 a7.90 b10.2 a7.91 b6.77 a7.40 a6.74 a

Means of the effect of different doses of 6-benzyladenine and gibberellic acid on morpho-floral quality parameters of L_ anceps, by experimental period_

Experimental periodFLNFSNFRSF/lengthSF/widthFSL
201724.55 a1.44 c2.09 a9.36 a7.81 a38.90 a
201822.01 b2.22 a2.35 a9.07 ab7.20 b35.45 a
201921.01 b1.77 b2.15 a8.80 b7.11 b35.71 a
DOI: https://doi.org/10.2478/fhort-2021-0009 | Journal eISSN: 2083-5965 | Journal ISSN: 0867-1761
Language: English
Page range: 121 - 133
Submitted on: Dec 22, 2020
Accepted on: Mar 8, 2021
Published on: Apr 17, 2021
Published by: Polish Society for Horticultural Sciences (PSHS)
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2021 Olga Tejeda-Sartorius, Humberto Vaquera-Huerta, Libia Iris Trejo-Téllez, Ramón Marcos Soto-Hernández, Julio Sánchez-Escudero, published by Polish Society for Horticultural Sciences (PSHS)
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.