Molecular Soil Biology 2014, Vol.6, No.2, 1-6
1
Research Article Open Access
Influence of NaCl and NaHCO
3
upon Salix Sungkianica Seed Germination and
Seedling Growth
Shurong Ma
, Lu Qian, Meijiao Zhang
Alkali Soil Natural Environmental Science Center (ASNESC), Stress Molecular Biology Laboratory, Northeast Forestry University, Harbin, 150040, P.
R.China
Corresponding author email:
Molecular Soil Biology, 2015, Vol.6, No.2 doi: 10.5376/msb.2015.06.0002
Received: 13 Jan., 2015
Accepted: 20 Jan., 2015
Published: 25 Mar., 2015
Copyright
©
2015 Ma et al., This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use,
distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:
Ma et al., 2015.
Influence of NaCl and NaHCO3 upon Salix Sungkianica Seed Germination and Seedling Growth
, Molecular Soil Biology, Vol.6, No.2 1
-
6
(doi: 10.5376/msb.2015.06.0002)
Abstract
The present study used the seeds and newborn seedings of
Salix sungkianica
as material, examining the influence of NaCl
and NaHCO
3
solutions of different concentrations on the seed germination and anatomical structure of the roots and lamina of the
seedings. The results indicate such facts: (1) The presents of NaCl and NaHCO
3
have a depressant effect on the seed germination,
while a light concentration of NaHCO
3
could accelerate the sprout. (2)
S. sungkianica
seedings show strong endurance under the
stress of 50 mmon/L NaCl and 10 mmon/L NaHCO
3
solutions, the seedings growth are better in 10 mmon/L NaHCO
3
. (3) Under the
stress of such solutions of high concentration, certain degrees of endurance also present in the roots and lamina, with the anatomical
results like the thicken of root endodermis, the enlargement of vascular bundle in diameter, the vanish of aerenchyma tissures and the
closure of lamina stoma.
Keywords
Salix sungkianica
; Saline–alkali stress; Seed germination; Seeding growth; Anatomical structure
Introduction
Salix sungkianica
is a species of Salicaceae
Salix
deciduous shrub. It is native only to China, where it
occurs throughout the country`s northern provinces
like Heilongjiang. A sun species which usually inhabit
in moisture environment like wet sand of the river
bank. The plant primarily reproduction modes are
through seed and cuttaging. The tree has a soft texture,
a gentle and slender branch, which could be used as
weaving material. A graceful tree form and strong
resistance make it suitable for landscaping (Zhang,
2009). It`s deep-rootness and flood enduring character
makes it the optimized species for dyke strengthening
and bank protection (Cao et al., 2013). In all,
S.
sungkianica
has a excellent application prospect.
Salix linearistipularis
is among the few ligneous
plants originally inhibited in the saline-alkali soil
(SAL) of Songnen plain (Liu, 2006). Therefore, it
proces a high degree of saline-alkaline tolerance.
Whether
S. sungkianica
as a sibling species of
S.
linearistipularis
, also process some degrees of tolerance
towards SAL and, whether it coult be planted in such
an environment are still unknown. To answer such
questions, this study used
S. sungkianica
seeds and
newborn seedings as material, by simulating natural
conditions, to investigate the stress effects of NaCl
and NaHCO
3
upon seed germination and the structure
of lamina and roots of newborn seedings and; to
examine the germination capacity, the growth of
seedings and the structural changes of
S. sungkianica
roots and lamina in adverse situation like SAL.
Therefore, to dertermine the adaptability of
S.
sungkianica
towards SAL. The research itself will
generate a theoretical significance on the development
and utilization of wild
S. sungkianica
resources and,
ecologically speaking, contribute to the enrichment of
plant population in SAL.
1 Result and Discussion
1.1 Influence of NaCl on germination of
S. sungkianica
seeds and sapling structure
1.1.1 Influence of NaCl on the germination of
S.
sungkianica
seeds
The germination rate and potential, germination index
(GI), vital index (VI) and seeding length of
S.
