Effects of different nitrogen application rates on the expression of wheat characters based on DUS testing

doi:10.14088/j.cnki.issn0439-8114.2023.08.001

Abstract

Abstract: To explore the effects of different fertility levels on the expression of wheat （Triticum aestivum L.） traits, so as to provide reference for wheat DUS test, using 4 common wheat varieties as materials, the expression of 32 characters in DUS test was analyzed by setting 5 nitrogen application treatments. The results showed that different nitrogen application levels had a great influence on the expression of awn length, showing two code differences, while there was no difference or one code difference in the expression of quality traits, false quality traits and other visual quantitative traits. The results of variance analysis showed that the effect of nitrogen application on different measurement type traits among different varieties was different, and each trait showed significant differences under different fertility（P<0.05）. Among them, the flag leaf length, flag leaf width and spike length were greatly affected by the amount of nitrogen fertilizer, the expression of plant height, spikelet number and grain number per spike were less affected, and the expression of sterile spikelet number was basically not affected.

Key words: common wheat （Triticum aestivum L.）, nitrogen application rate, the expression of character, DUS testing

CLC Number:

S512.1

SUN Jian-jun, DOU Dan-dan, SHEN Pei-lin, DING Chao-ming, GUO Yu-xi, GUO Xin-hai, WANG De-xin. Effects of different nitrogen application rates on the expression of wheat characters based on DUS testing[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(8): 1-6.

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