36 / 38
Page 86
conferenceseries
.com
Volume 7, Issue 4 (Suppl)
J Biotechnol Biomater, an open access journal
ISSN: 2155-952X
Bio America 2017
October 19-20, 2017
October 19-20, 2017 | New York, USA
18
th
Biotechnology Congress
Effects of 1-MCP on plant growth characteristics and spikelets development under salt stress in rice
Qianyu Jin, Junhua Zhang, Jie Huang, Sajid Hussain
and
Zhigang Bai
China National Rice Research Institute, China
Statement of the Problem:
Rice growth and development was badly affected by its salt sensitivity. It faces osmotic, ionic as well
as hormonal (ethylene) stress due to salt stress. High ethylene production effects inferior and superior spikelets development in
rice cultivars under salt stress. 1-Methylecyclopropne (1-MCP) is an excellent ethylene inhibitor in plants, which has been recently
explored as an important ethylene inhibitor in rice. However, effects of 1-MCP in rice growth and development under salt stress is a
novel study.
Methodology & Theoretical Orientation:
Two rice cultivars, Liangyoupiejiu (LYP9, Indica) and Nipponbare (NPBA, Japonica,
sensitive to salt stress) were grown in green house with three salt stress levels: 0 (Control, CK), 1.5 g NaCl/kg dry soil (Low Salt Stress,
LS), and 4.5g NaCl/kg dry soil (Heavy Salt Stress, HS).
Findings:
The results showed that 1-MCP significantly improved photosynthesis rate (Pn), transpiration rate (Tr), stomatal
conductance (Gs), and SPAD values of flag leaf in both cultivars than no 1-MCP. It was higher effective in increasing grain weight
and grain filling rate of LYP9 than NPBA under all salt levels. 1-MCP significantly inhibits ethylene production in inferior spikelets
in LYP9 and NPBA than superior spikelets. Application of 1-MCP positively improved rice plant dry matter and improved grain yield
and yield components for LYP9 and NPBA, especially for LYP9.
Conclusion & Significance:
1-MCP favorably improved plant growth characteristics and development of superior and inferior
spikelets in rice under slat stress, LYP9 showed better performance than NPBA after application of 1-MCP under salt stress
jinqianyu@caas.cnJ Biotechnol Biomater 2017, 7:4 (Suppl)
DOI: 10.4172/2155-952X-C1-080