Articles
Investigation on resources of Hemerocallis in North China
Article number
1185_10
Pages
65 – 72
Language
English
Abstract
The various colors and adaptablity of daylilies means they are widely used in landscaping as flower borders, gardens, and road green belts.
The natural distribution of daylilies covers from East Asia to Russia’s Siberia and is mainly in China.
Eleven of 16 species in Hemerocallis are native to China.
There are problems of classification and evolutionary relationships among populations.
These include naming and classification confusion, unclear distinction between species and cultivars, variation between different geographical groups, natural hybrid populations, and the difference between day and night flowering in Hemerocallis. Therefore, a comprehensive and systematic investigation of the population should be studied in China.
Based on the literature and investigation of all 383 collections of wild daylilies of herbarium specimens in the Herbarium, Institute of Botany, CAS (PE), 5 species and 1 variant of wild daylilies were collected in Shandong, Shaanxi, Hebei Province, and Beijing.
In addition, a field investigation was conducted in Saihanba National Forest Park in Hebei Province, and plots were set to record the elevation, slope, habitat, associated plants, and biological characteristics of daylilies.
By analyzing the data, this study shows that daylilies are mainly distributed in the moist areas of forests and valley plains.
The maximum average coefficient of variation within populations is the length of the bracts (86.28%) in Hemerocallis lilio-asphodelus and number of buds (21.39%) in Hemerocallis citrina. The main factors among populations is the height of plants in Hemerocallis minor. This research will provide guidance for further study of daylilies.
Analysis within populations and among populations and molecular markers remains to be studied.
In addition, more resources should be collected.
The natural distribution of daylilies covers from East Asia to Russia’s Siberia and is mainly in China.
Eleven of 16 species in Hemerocallis are native to China.
There are problems of classification and evolutionary relationships among populations.
These include naming and classification confusion, unclear distinction between species and cultivars, variation between different geographical groups, natural hybrid populations, and the difference between day and night flowering in Hemerocallis. Therefore, a comprehensive and systematic investigation of the population should be studied in China.
Based on the literature and investigation of all 383 collections of wild daylilies of herbarium specimens in the Herbarium, Institute of Botany, CAS (PE), 5 species and 1 variant of wild daylilies were collected in Shandong, Shaanxi, Hebei Province, and Beijing.
In addition, a field investigation was conducted in Saihanba National Forest Park in Hebei Province, and plots were set to record the elevation, slope, habitat, associated plants, and biological characteristics of daylilies.
By analyzing the data, this study shows that daylilies are mainly distributed in the moist areas of forests and valley plains.
The maximum average coefficient of variation within populations is the length of the bracts (86.28%) in Hemerocallis lilio-asphodelus and number of buds (21.39%) in Hemerocallis citrina. The main factors among populations is the height of plants in Hemerocallis minor. This research will provide guidance for further study of daylilies.
Analysis within populations and among populations and molecular markers remains to be studied.
In addition, more resources should be collected.
Authors
Y. Ren, Y.K. Gao, J.J. Liu, M. Fu, Q.X. Zhang
Keywords
wild resources, herbarium specimens, measure, collection, daylilies
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