干旱区生态环境知识资源中心(Arid): Effects of Root Trace Nitrogen Reduction in Arid Areas on Sucrose-Starch Metabolism of Flag Leaves and Grains and Yield of Drip-Irrigated Spring Wheat

Arid

DOI	10.3390/agronomy14020312
	Effects of Root Trace Nitrogen Reduction in Arid Areas on Sucrose-Starch Metabolism of Flag Leaves and Grains and Yield of Drip-Irrigated Spring Wheat
	Ma, Yilin; Wang, Haiqi; Liu, Jianguo; Wang, Rongrong; Che, Ziqiang
通讯作者	Liu, JG
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2024
卷号	14 期号:2
英文摘要	To investigate the effect of nitrogen (N) application on the carbon metabolism and yield of flag leaves and grains of spring wheat under drip irrigation in Xinjiang, a split-zone design was adopted from 2020 to 2021, with strong-gluten wheat, Xinchun 37 (XC37), and medium-gluten wheat, Xinchun 6 (XC 6), as the main zones and different nitrogen application rates as the sub-zones. Four nitrogen application rates of 0, 210, 255, and 300 kg center dot ha-1 (CK2, B1, A1, and CK1, respectively) were set to analyze and compare the nitrogen response of key enzyme activity, soluble sugar, and sucrose and starch content in flag leaves and grains to control yield formation. The results showed that with the increase in nitrogen application, the activities of sucrose phosphate synthase (SPS) and sucrose synthase (SS) in flag leaves; the activities of SS, adenosine diphosphate glucose pyrophosphorylase (ADPG-PPase), soluble starch synthase (SSS), granule-bound starch synthase (GBSS), and starch branching enzyme (SBE) in grains; the contents of soluble sugar and sucrose in the flag leaves; and the yield, all first increased and then decreased. There is a significant difference between A1 (255 kg center dot ha-1) and the CK1 (300 kg center dot ha-1), B1 (210 kg center dot ha-1), and CK2 (0 kg center dot ha-1) treatments under the above indicators, with increases of 8-158%, 9-155%, 8-53%, 5-63%, 3-86%, 3-57%, 9-79%, 9-197%, and 9-113%, as well as higher levels of amylose, amylopectin, and total starch content than other treatments by 2-30%, 11-84%, and 8-63%, respectively. Correlation and stepwise regression analyses indicated highly a significant positive correlation between the yield and soluble sugar and sucrose of flag leaves and grains, as well as their key enzymes and starch. Among them, soluble sugar in grains, amylopectin, and sucrose in grains have the greatest impact on the yield of XC37, determining 85% of its yield. SSS, soluble sugars in grains, amylopectin, and SBE have the greatest impact on the yield of XC 6, determining 80% of its yield. The starch showed a highly significant positive correlation with ADPG-PPase, SSS, GBSS, and SBE. There was a significant interaction effect between the nitrogen application rate and variety, with better performance observed in Xinchun 37 compared to Xinchun 6. Under drip irrigation conditions in arid areas, a nitrogen application of 255 kg center dot ha-1 can effectively regulate the metabolism of sucrose to starch in the flag leaves and grains of spring wheat, which is conducive to the accumulation of starch in grains and the formation of yield.
英文关键词	spring wheat (Triticum aestivum L.) drip irrigation nitrogen application rate sucrose-starch metabolism yield
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001170065400001
WOS关键词	WINTER-WHEAT ; CARBOHYDRATE-METABOLISM ; KEY ENZYMES ; ACCUMULATION ; FERTILIZER ; QUALITY ; DENSITY ; GROWTH
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402746
推荐引用方式 GB/T 7714	Ma, Yilin,Wang, Haiqi,Liu, Jianguo,et al. Effects of Root Trace Nitrogen Reduction in Arid Areas on Sucrose-Starch Metabolism of Flag Leaves and Grains and Yield of Drip-Irrigated Spring Wheat[J],2024,14(2).
APA	Ma, Yilin,Wang, Haiqi,Liu, Jianguo,Wang, Rongrong,&Che, Ziqiang.(2024).Effects of Root Trace Nitrogen Reduction in Arid Areas on Sucrose-Starch Metabolism of Flag Leaves and Grains and Yield of Drip-Irrigated Spring Wheat.AGRONOMY-BASEL,14(2).
MLA	Ma, Yilin,et al."Effects of Root Trace Nitrogen Reduction in Arid Areas on Sucrose-Starch Metabolism of Flag Leaves and Grains and Yield of Drip-Irrigated Spring Wheat".AGRONOMY-BASEL 14.2(2024).