Nitrogen Use Efficiency and Adaptation of Elite Varieties of Dryland Wheat (Triticum aestivum L.) in the Loess Plateau of China

Abstract

quality and efficient production of characteristic crops on the Loess Plateau jointly built by provinces and ministries,

Root morphology and physiological of their relationship with nitrogen uptake in wheat (Triticum aestivum L.)

“…In the process of nitrogen application different varieties will not only affect the effects of nitrogen application, but also cause the difference in nitrogen absorption, accumulation, and transport as well as dry matter accumulation, distribution, and yield formation of crops. Therefore, only the combination of appropriate nitrogen regulation rational planting measures to coordinate the contradiction between crop nutrient absorption, and nitrogen use efficiency can improve the nitrogen use efficiency of wheat, and achieve high yield [ 29 ]. Nitrogen is an important component of photon avalanche diode SPAD various dry gluten and approximately 75 % of the nitrogen in plant leaves occurs in SPAD most of which are used to construct photosynthetic apparatus [ 29 ].…”

“…Therefore, only the combination of appropriate nitrogen regulation rational planting measures to coordinate the contradiction between crop nutrient absorption, and nitrogen use efficiency can improve the nitrogen use efficiency of wheat, and achieve high yield [ 29 ]. Nitrogen is an important component of photon avalanche diode SPAD various dry gluten and approximately 75 % of the nitrogen in plant leaves occurs in SPAD most of which are used to construct photosynthetic apparatus [ 29 ]. The ratio of variable fluorescence to maximum fluorescence (F V /F m ) reflectsthe maximum photosynthetic quantum yield of ΦPSII.…”

“…Many experiments have also detected a decrease in plant nitrogen concentration under CO 2 enrichment conditions. The leaf is an important component of the later growth stage contributing about 30 % to the photosynthesis of the population wheat [ 29 ]. YH-20410 significantly increased root length density, and root volume density in 0–60 cm soil layers at flowering and maturity stages, increased root superoxide dismutase activity and root reduction intensity in 0–60 cm soil layers at flowering stage, and decreased root malondialdehyde content in 0–60 cm soil layers.…”

Long-Term Nutrient Cycle in Improved Grain Yield of Dryland Winter Wheat (Triticum aestivum L.) under Hydrological Process of Plant Ecosystem Distribution in the Loess Plateau of China

“…All year round, N180 increased yield by 5.5% and reduced N by 14.3%. The input nitrogen fertilizer directly affects the protein comprised of grains [ 35 ]. Meanwhile, the protein content of grains is restricted by the process of N absorption, transport, buildup, and re-transport of wheat plants [ 36 ].…”