|Table of Contents|

Different Temperature and Light Treatments on the Reproductive Effect of Lilium davidii var. unicolor Scales by Air Culture

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年24
Page:
70-77
Research Field:
Publishing date:

Info

Title:
Different Temperature and Light Treatments on the Reproductive Effect of Lilium davidii var. unicolor Scales by Air Culture
Author(s):
CAO Caixia; JU Xiuting; QI Weifang; TANG Nan; TANG Daocheng
(Plateau Flower Research Center,Qinghai University/The Key Laboratory of Landscape Plants of Qinghai Province,Xining,Qinghai 810016)
Keywords:
Lilium davidii var.unicolor; air culture; principal component analysis; comprehensive evaluation; bulblet
PACS:
-
DOI:
10.11937/bfyy.20212941
Abstract:
Taking the scale of Lilium davidii var. unicolor test materials,the air culture method was selected for single-factor screening test and two-factor randomized block test,to explore the effect of Lilium davidii var. unicolor scales on the reproduction of bulblet under different temperature and light,in order to screen the most suitable Lilium davidii var. unicolor scales for air culture environmental factors.The results showed that the best culture effect (decay rate,rooting rate,differentiation rate) and bulblet culture effect (differentiation number,rooting number,bulblet quality,bulblet grading) under different aeroponic temperature conditions was achieved by 25 ℃ treatment,in which the highest rate of scale differentiation reached 89.81% and the differentiation number of bulblet was 146.48 grains·(100pieces)-1,followed by 20 ℃ treatment,in which the differentiation number of bulblet reached 146.67 grains·(100pieces)-1.The rooting rate of scales at 25 ℃ and 20 ℃ reached 60.0%.The results of the two-factor randomized group test showed that the highest number of bulblet differentiation was 278 grains·(100pieces)-1 and the highest number of roots was 424.33 strips·(100pieces)-1 under the A2B1 combination,in which the effects of temperature on differentiation rate,rooting rate,bulblet mass and bulblet grading (>4 mm) were significant.The effect of light on the number of bulblet differentiated was significant and the effect on the quality of bulblet was highly significant.Correlation analysis among aeroponics indicators showed that differentiation rate was negatively correlated with decay rate,while rooting rate was positively correlated with differentiation rate and differentiation number,and rooting number was positively correlated with differentiation number and rooting rate.The cumulative variance contribution of the first two components in the principal component analysis reached 86.087 6%,among which differentiation rate,differentiation number,rooting rate and bulblet mass could be used as the main evaluation index.The aeroponic effect of eight temperature and light combinations was evaluated and the highest score was obtained from combination A2B1.20-25 ℃ was the most suitable temperature for bulb cultivation and the best aeroponic effect was obtained at 25 ℃ and 500 lx,which can be promoted and applied in the large-scale propagation and production of Lilium davidii var. unicolor using aeroponics.

References:

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Last Update: 2022-03-24