Abstract
The effects of nitrogen (N) treatment applied at the booting stage on progeny seed germination and seedling growth were investigated in wheat (Triticum aestivum L.) cvs. Zheng 9023 (high protein content of 14%) and Yangmai 13 (low protein content of 10%). The N treatment enhanced seed protein content, seedling root length, shoot length, dry weight, chlorophyll contents, activities of superoxide dismutase and dehydrogenase, and cell number and cross-sectional area of roots. N treatment significantly increased progeny seed germination percentage and rate in cv. Yangmai 13, but decreased them in cv. Zheng 9023, relative to controls. N treatment resulted in cell walls and starch granules in seed endosperm degrading faster in cv. Yangmai 13, but more slowly in cv. Zheng 9023, relative to controls. The results will help to provide a practice for improving progeny seedling quality by choosing appropriate varieties and N management.
Highlights
Wheat (Triticum aestivum L.) is one of the major staple food crops, the second most important cereal crop after maize
The effects of nitrogen (N) treatment applied at the booting stage on progeny seed germination and seedling growth were investigated in wheat (Triticum aestivum L.) cvs
Germination rate was determined at 3 days post germination (DPG), and germination percentage determined at 7 DPG
Summary
Wheat (Triticum aestivum L.) is one of the major staple food crops, the second most important cereal crop after maize. Many studies have been done on the effects of hormones, heavy metals, microelements and other external factors on wheat germination and seedling growth. Studies have shown that absorption of N by maturing wheat grains can affect the distribution of heavy metals and microelements in grain (Fangmeier et al, 1997; Lintschinger et al, 1997; Perilli et al, 2010) there have been many studies on wheat seeds, effects of N application at the booting stage on seed germination and seedling growth have been poorly investigated. The physiological and structural effects of N at the booting stage on progeny seed germination and seedling growth were investigated in two wheat varieties with different www.ccsenet.org/jps. The roles of N in improving progeny seed protein contents and the quality of seedlings were examined
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