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Effect of cut irrigation tension and foliar application of salicylic acid on growth, yield and yield components of three safflower cultivars
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S. Farjam *   , A. Rokhzadi , H. Mohammadi , S. Ghaleshakhati |
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Abstract: (3830 Views) |
| Drought tension is one of the main factors restricting the growth of crop plants and compounds such as salicylic acid can affect drought tolerance in plants. In this research the effect of cut irrigation tension and foliar application of salicylic acid on growth, yield, yield components and oil percentage of three safflower cultivars was studied in a split-plot factorial layout with randomized complete blocks design with three replications in Agriculture and Natural Resources Research Station in Gorizeh Sanandaj. In this experiment irrigation treatment as the main factor in three levels: total irrigation as control, cut irrigation practices at vegetative stage and cut irrigation practices at reproductive stage and three cultivars of safflower Sina, Faraman and Isfahan landrace and three levels of salicylic acid: without foliar application, 50 milligram per liter and 100 milligram per liter as foliar application were considered in sub-plots at the beginning of vegetative stage .The results showed that cut irrigation practices caused reduction in plant dry weigh, primary branch number, grain yield, number of capitol in plant, number of seed in capitol, one thousand-grain weight and oil percent. Faraman cultivar had the highest number of primary branch (14/33) and Sina cultivar the highest number of seed per Capitol (31/30) and the lowest amount of plant dry biomass (22/80) was allocated to Isfahan landrace cultivar. On the other hand foliar application Salicylic acid by concentration 100 milligram per liter led to the increasing the primary branch number and one thousand-grain weight and in Faraman cultivar caused increasing the grain yield (1502 kilogram per hectare) and the number of capital per plant (58). Plant dry weight, number of seeds per capitol and oil percentage were not affected significantly by foliar application of salicylic acid |
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| Keywords: Reduced irrigation, Growth regulator, Oil percentage. |
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Full-Text [PDF 264 kb]
(2920 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2015/06/17 | Accepted: 2015/06/17 | Published: 2015/06/17
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