Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor

Scale propagation is a cost-effective and time-saving reproduction method for lily bulb production. The effects of different incubation temperatures and plant growth regulators on the scale propagation of Lilium davidii var. unicolor were investigated. The results showed that temperature influences...

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Main Authors: Nan Tang, Xiuting Ju, Yafan Hu, Rulong Jia, Daocheng Tang
Format: Article
Language:English
Published: American Society for Horticultural Science (ASHS) 2020-05-01
Series:HortScience
Subjects:
Online Access:https://journals.ashs.org/hortsci/view/journals/hortsci/55/6/article-p870.xml
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author Nan Tang
Xiuting Ju
Yafan Hu
Rulong Jia
Daocheng Tang
author_facet Nan Tang
Xiuting Ju
Yafan Hu
Rulong Jia
Daocheng Tang
author_sort Nan Tang
collection DOAJ
description Scale propagation is a cost-effective and time-saving reproduction method for lily bulb production. The effects of different incubation temperatures and plant growth regulators on the scale propagation of Lilium davidii var. unicolor were investigated. The results showed that temperature influences the scale rot incidence rate, speed of scale differentiation and bulblet formation, as well as the size of bulblets. The optimum temperature for scale propagation of L. davidii var. unicolor was 30 °C. Scales incubated at 30 °C showed a lower rot incidence and faster differentiation and produced larger bulblets. The application of gibberellic acid (GA3), 1-naphthaleneacetic acid (NAA), and 6-benzylaminopurine (6-BA) had no significant influence on the differentiation rate of scales. GA3 application reduced the incidence rate of scale rot. However, treatment with 50 mg/L NAA and 2 mg/L 6-BA significantly increased the rot incidence rate in the second week of propagation. Both treatments with 100 mg/L NAA and 100 mg/L GA3 produced a higher number of bulblets than their controls after 6 weeks of incubation. GA3 at 100 and 150 mg/L increased the diameter of bulblets, resulting in more large bulblets (grade 1) and fewer small bulblets (grade 3). 6-BA did not facilitate propagation by scaling.
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spelling doaj.art-4863ac0c2b5b484bac3d652a012254f72022-12-21T23:39:38ZengAmerican Society for Horticultural Science (ASHS)HortScience2327-98342020-05-01556870875https://doi.org/10.21273/HORTSCI14916-20Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolorNan Tang Xiuting Ju Yafan Hu Rulong Jia Daocheng Tang Scale propagation is a cost-effective and time-saving reproduction method for lily bulb production. The effects of different incubation temperatures and plant growth regulators on the scale propagation of Lilium davidii var. unicolor were investigated. The results showed that temperature influences the scale rot incidence rate, speed of scale differentiation and bulblet formation, as well as the size of bulblets. The optimum temperature for scale propagation of L. davidii var. unicolor was 30 °C. Scales incubated at 30 °C showed a lower rot incidence and faster differentiation and produced larger bulblets. The application of gibberellic acid (GA3), 1-naphthaleneacetic acid (NAA), and 6-benzylaminopurine (6-BA) had no significant influence on the differentiation rate of scales. GA3 application reduced the incidence rate of scale rot. However, treatment with 50 mg/L NAA and 2 mg/L 6-BA significantly increased the rot incidence rate in the second week of propagation. Both treatments with 100 mg/L NAA and 100 mg/L GA3 produced a higher number of bulblets than their controls after 6 weeks of incubation. GA3 at 100 and 150 mg/L increased the diameter of bulblets, resulting in more large bulblets (grade 1) and fewer small bulblets (grade 3). 6-BA did not facilitate propagation by scaling.https://journals.ashs.org/hortsci/view/journals/hortsci/55/6/article-p870.xmlbulbletlanzhou lilyscale differentiationtemperature screeningvegetative propagation
spellingShingle Nan Tang
Xiuting Ju
Yafan Hu
Rulong Jia
Daocheng Tang
Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor
HortScience
bulblet
lanzhou lily
scale differentiation
temperature screening
vegetative propagation
title Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor
title_full Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor
title_fullStr Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor
title_full_unstemmed Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor
title_short Effects of Temperature and Plant Growth Regulators on the Scale Propagation of Lilium davidii var. unicolor
title_sort effects of temperature and plant growth regulators on the scale propagation of lilium davidii var unicolor
topic bulblet
lanzhou lily
scale differentiation
temperature screening
vegetative propagation
url https://journals.ashs.org/hortsci/view/journals/hortsci/55/6/article-p870.xml
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