Some Effects of High Salinity on Germination and Emergence of Barley (Hordeum vulgare L. emend Lam.)1
- T. J. Donovan and
- A. D. Day2
A number of barley strains with geographical origins similar to ‘California Mariout’ and other commercial varieties were germinated in salinized water and soil cultures in Tucson, Arizona. Of 39 barleys studied, approximately one-third equalled or exceeded the germination of California Mariout in highly saline cultures. Their emergence in salinized soil followed the same trends as their germination in petri dishes. Most commercial varieties had lower germination salt-tolerance than California Mariout and the more tolerant USDA introductions.
Differences were observed between strains in germination under saline conditions. For example, 41% of the seedlings of C.I. 3780 had emerged at the end of 7 days when 20,500 ppm of salts were present in the soil solution. Cereal Investigation 3555, a strain with equally good emergence in non-saline cultures, had only 24% for the same period. However, after 15 days both entries had similar emergence. At moderate salinity levels most barleys had uniform emergence in soil cultures while at higher levels of salinity only the salt-tolerant barleys produced satisfactory seedling growth. There was a substantial delay in emergencoef all barleys in highly saline cultures.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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