干旱区生态环境知识资源中心(Arid): Potassium humate supplementation improves photosynthesis and agronomic and yield traits of foxtail millet

Arid

DOI	10.1038/s41598-024-57354-x
	Potassium humate supplementation improves photosynthesis and agronomic and yield traits of foxtail millet
	Shen, Jie; Xiao, Xiaolu; Zhong, Dandan; Lian, Huida
通讯作者	Lian, HD
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2024
卷号	14 期号:1
英文摘要	Foxtail millet is a highly nutritious crop, which is widely cultivated in arid and semi-arid areas worldwide. Humic acid (HA), as a common plant growth regulator, is used as an organic fertilizer and feed additive in agricultural production. However, the impact of potassium humate KH on the photosynthetic rate and yield of foxtail millet has not yet been studied. We explored the effects of KH application on the morphology, photosynthetic ability, carbon and nitrogen metabolism, and yield of foxtail millet. A field experiment was performed using six concentrations of KH (0, 20, 40, 80, 160, and 320 kg ha-1) supplied foliarly at the booting stage in Zhangza 10 cultivar (a widely grown high-yield variety). The results showed that KH treatment increased growth, chlorophyll content (SPAD), photosynthetic rate (Pn), transpiration rate (Tr), and stomatal conductance (Gs). In addition, soluble protein content, sugar content, and nitrate reductase activity increased in KH-treated plants. With increased KH concentration, the effects became more evident and the peak values of each factor were achieved at 80 kg ha-1. Photosynthetic rate showed significant correlation with SPAD, Tr, Gs, and soluble protein content, but was negatively correlated with intercellular CO2 concentration. Compared to that of the control, the yield of foxtail millet under the T2, T3, T4, and T5 (40, 80, 160, and 320 kg ha-1 of KH) treatments significantly increased by 6.0%, 12.7%, 10.5%, and 8.6%, respectively. Yield exhibited a significant positive correlation with Tr, Pn, and Gs. Overall, KH enhances photosynthetic rate and yield of foxtail millet, therefore it may be conducive to stable millet production. These findings may provide a theoretical basis for the green and efficient production of millet fields.
英文关键词	Foxtail millet Physiological attributes Photosynthesis Potassium humate Yield
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001211032500040
WOS关键词	PRODUCTIVITY ; EFFICIENCY ; TOLERANT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405570
推荐引用方式 GB/T 7714	Shen, Jie,Xiao, Xiaolu,Zhong, Dandan,et al. Potassium humate supplementation improves photosynthesis and agronomic and yield traits of foxtail millet[J],2024,14(1).
APA	Shen, Jie,Xiao, Xiaolu,Zhong, Dandan,&Lian, Huida.(2024).Potassium humate supplementation improves photosynthesis and agronomic and yield traits of foxtail millet.SCIENTIFIC REPORTS,14(1).
MLA	Shen, Jie,et al."Potassium humate supplementation improves photosynthesis and agronomic and yield traits of foxtail millet".SCIENTIFIC REPORTS 14.1(2024).