Effects of salt stress on germination and early seedling growth of rice (Oryza sativa) cultivars in Iran

2011 ◽  
Vol 10 (77) ◽  
Author(s):  
Kamyar Kazemi
2010 ◽  
Vol 9 (13) ◽  
pp. 1911-1918 ◽  
Author(s):  
A Hakim M ◽  
S Juraimi A ◽  
Begum M ◽  
M Hanafi M ◽  
R Ismail Mohd ◽  
...  

2007 ◽  
Vol 10 (6) ◽  
pp. 910-914 ◽  
Author(s):  
M. Jamil ◽  
Kyeong Bo Lee ◽  
Kwang Yong Jung ◽  
Deog Bae Lee ◽  
Mi Suk Han ◽  
...  

Author(s):  
Anita Mann ◽  
Gurpreet Kaur ◽  
Ashwani Kumar ◽  
Satish Kumar Sanwal ◽  
Jogendra Singh ◽  
...  

Screening of chickpea lines for salt tolerance through seed germination and early seedling growth is crucial for their evaluation. Seeds of 30 chickpea genotypes were germinated on a sand bed irrigated with saline (3, 6, 9, 12 dS/m) and control solutions upto 30 days. At the early seedling stage (25-30 days), germination percentage, chlorophyll content, proline, root length, shoot length and seedling dry weight were found to be affected due to salinity. Salt tolerance index (STI) for plant biomass maintained a significant correlation with chlorophyll, proline, shoot length, and root length, which indicated that these parameters could be used as selection criteria for screening chickpea genotypes against salt stress. Significant differences in shoot length, root length, and seedling dry weight in 30-day-old seedlings were observed among selected chickpea genotypes as well. From the overall observation of germination characterstics and early seedling growth, it is concluded that the chickpea genotypes, HC-1, HC-5, ICC 867, ICC 5003, H-10-41 showed better salt tolerance as compared to the available salt tolerant check variety.


1988 ◽  
Vol 15 (6) ◽  
pp. 761 ◽  
Author(s):  
L Prakash ◽  
G Prathapasenan

Changes induced by NaCl and putrescine during germination and early seedling growth of rice were examined for 120 h. Rates of germination and growth of embryo axis decreased when seeds were subjected to salt stress (100, 150 and 200 mM NaCl). NaCl at 150 mM concentration significantly reduced the water uptake of seeds and the rate of mobilisation of reserves. All concentrations of putrescine (0.001, 0.01, 0.1 and 1.0mM) applied exogenously to seeds increased the rate of germination and seedling growth when NaCl(150 mM) was also present and 0.01 mM putrescine gave maximum response. Addition of putrescine (0.01 mM) to NaCl solution (150 mM) reduced the net accumulation of sodium and chloride ions in seeds and increased their water uptake. Thus, putrescine can alleviate the adverse effects of NaCl during germination and early seedling growth of rice.


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