Changes in the vigor of wheat seeds produced under different nitrogen application rates during seed production
In order to explore the effect of nitrogen fertilizer on the seed vigor of wheat(Triticum aestivum L.)and find out the best fer-tilization amount,the wheat variety Jimai 22 was selected as the test material,the seeds under different nitrogen application rates were harvested for standard germination test,and the germination,seeding growth and physiological indexes of the seed were determined.The results showed that the yield and seed vigor index of wheat were the highest when the pure nitrogen application rate was 154 kg/hm2 and 220 kg/hm2,which was suitable for the production of high vigor wheat seeds.Under no nitrogen application,the seed yield and vig-or index were the lowest,the seed water content was high,and the germination rate was the fastest,indicating that the seed texture of wheat with no nitrogen application became loose,and it was easier to absorb water during germination,thus accelerating the germina-tion process.Under each nitrogen application level,the seed germination index did not change much.There was a very significant cor-relation between the absolute content of seed protein and the dry weight of seedlings(P<0.01).
wheat(Triticum aestivum L.)seednitrogen fertilizerseed vitalitygermination indexprotein content of seed
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