|Table of Contents|

Experiment and Analysis of Deficiency Symptoms of Calcium, Magnesium and Sulfur of Solanum torvum Seedlings

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年04
Page:
1-6
Research Field:
Publishing date:

Info

Title:
Experiment and Analysis of Deficiency Symptoms of Calcium, Magnesium and Sulfur of Solanum torvum Seedlings
Author(s):
XU Liangzheng; LI Nuo; HE Guiling; ZENG Xianlu; YANG Hesheng; LIU Deliang
(School of Life Sciences，Jiaying University，Meizhou，Guangdong 514015)
Keywords:
Solanum torvum; solution culture; nutrient deficiency symptoms; calcium; magnesium; sulfur
PACS:
-
DOI:
10.11937/bfyy.20182037
Abstract:
Deficiency symptoms of calcium，magnesium and sulfur in the Solanum torvum seedlings cultured in nutrient solution were induced and observed，along with the determination of growth parameters and physiological characteristics.The conclusions of the present study provided a valuable basis for nutrient deficiency diagnosis in the large scale production of Solanum torvum seedlings.The results indicated that each treatment of a specific nutrient deficiency induced exclusive symptoms；the emergence time and severity of three different nutrient deficiencies were different，with symptoms of calcium deficiency emerging the earliest and the most obvious；all the three nutrient deficiencies impacted adversely the growth of Solanum torvum seedlings，namely the number of leaves，whole-plant dry weight and root volume of the deficiency treatments were all significantly lower than those of the non-deficiency control.Calcium deficiency and sulfur deficiency resulted in significant lesser leaf numbers than those of the control and magnesium deficiency by 16.33% and 6.81%，respectively.Calcium deficiency led to the lowest whole-plant dry weight，total root length，total root volume and root activity，namely lower than other treatments by 11.30%-42.70%，27.75%-41.88%，14.29%-66.67%，20.98%-75.01%，respectively.Magnesium deficiency led to the lowest root to shoot ratio and chlorophyll content in old leaves，lower than the control，calcium deficiency and sulfur deficiency by 29.41%，14.29%，45.46% and 75.00%，60.00%，55.56%.Calcium deficiency led to the lowest chlorophyll content in tender leaves，lower than the control，magnesium deficiency and sulfur deficiency by 42.31%，25.00% and 16.67%.The root activity of the control was 4.00，2.03 and 3.16 times of those of calcium，magnesium and sulfur deficiencies.

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Last Update: 2019-03-22