Effect of priming and seed age on germination, photosynthetic pigments, and biochemical content of Quinoa seedling

A Mansouri | Heshmat Omidi

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=159239
Date :  2022/06/22
Publish in :    فرايند و کارکرد گياهي=Journal of Plant Process and Function

Link :  https://jispp.iut.ac.ir/index.php?&slct_pg_id=38&sid=1&slc_lang=fa
Keywords : potassium nitrate priming aging and seed deterioration.

Abstract :

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In order to investigate the effect of quinine seed priming on morphophysiological and biochemical traits of seedlings, a factorial experiment was conducted in a completely randomized design with three replications at the seed processing laboratory of Shahed University of Tehran. Experimental factors included two levels of seed age (one year and four years) and four priming treatments (control without prime, hydropriming, salicylic acid with a concentration of 50 ppm and potassium nitrate with a concentration of 0.2 wt by volume). The effect of aging on all studied traits was significant at the level of 1 probability. With increasing seed age, germination percentage (45.6), germination rate (63.43), seedling length (59.21), chlorophyll a content (53.1), chlorophyll b content (67.4), carotenoids (6) 56.5), soluble sugar (55.8), protein (47), anthocyanin (62) and catalase activity (50) decreased and the amount of electrolyte leakage increased by 25.9. The effect of priming on all studied traits was significant at the level of one percent probability and improved the studied traits. The interaction effect of seed age and priming on some traits was also significant. Priming of four-year-old seeds with potassium nitrate as the best treatment composition increases germination percentage (52.67), germination rate (about 7 times), seedling length (440), chlorophyll a content (6 times), chlorophyll b content (147) ), Carotenoids (2.3 times), protein (4.7 times) and catalase activity (1.98 times) and 17.7 reduction of electrolyte leakage from plasma membrane. According to the obtained results, it can be stated that the use ofز