ROLE OF SEED PRIMING AND SPRAYING SOME BIO AND CHEMICAL SUBSTANCES IN RAISING RICE SALINITY TOLERANCE AND PRODUCTIVITY | ||||
| Menoufia Journal of Plant Production | ||||
| Article 1, Volume 3, Issue 3, May and June 2018, Page 269-286 PDF (269.71 K) | ||||
| Document Type: original papers | ||||
| DOI: 10.21608/mjppf.2018.175451 | ||||
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| Author | ||||
| Amira M. Okasha | ||||
| Rice Research Department, Field Crops Research Institute, ARC, Sakha, Kafr elsheikh, Egypt | ||||
| Abstract | ||||
| The present investigation was carried out in 2015 and 2016 seasons at the experimental Farm of El-Sirw Agriculture at Research Station, Damietta province and lab of Rice Research and Training Center, Sakha, kafr-elsheikh province, Egypt. The objective of this study was to examine the effectiveness of seed priming and foliar spray thoric with solutions of some substances; salicylic acid (SA) 250 ppm, yeast (Saccharomyces cervisia) 2kg/fed, and the extraction of bacteria (Aizosprillium spp) 2% conc. at different growth stages (mid tillering, panicle initiation and booting stages) on the performance of three rice varieties viz; Giza177, Giza 179 and Egyptian hybrid one (EHR1) under saline soil conditions. An experiment was performed in spilt plot design with four replications. The tested rice varieties were distributed in the main plots while, the sub plots were devoted to the substances treatments. The salinity levels of experimental site were 7.0 and 7.3 dSm-1 in 2015 and 2016 seasons, respectively. The artificial salinity level in Lab experiment was 7.0 dSm-1. Significant difference in the performance of tested rice varieties was found in both seasons under Lab and field conditions. Under Lab experiment, Giza177 produced the highest values of germination characters; seed germination, germination energy, final germination and vigor index. Germination characteristics were positively improved owing to seed soaked in Aizosprillium without significant difference with salicylic acid compared to control (untreated one). Under field conditions, Egyptian hybrid rice one produced the highest values of growth parameters, most of yield attributes and grain yield. The tested substances enhanced all studied characters compared with control treatment. The impact of salicylic acid either foliar spray or soaking was superior compared with other treatments for the most studied characters and grain yield followed by bacteria foliar spray and bacteria soaking. Yeast treatments came in the last order. It could be concluded that, rice seed soaking or plant foliar spray with extraction of salicylic acid or bacteria more effective than yeast and improved growth and yield of rice under salt stress. | ||||
| Keywords | ||||
| Rice; salicylic acid; Aizosprillium; yeast; seed soaking; saline soil | ||||
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