干旱区生态环境知识资源中心(Arid): Leaf Expansion and Transpiration Responses of Millet Species to Soil Water Deficit

Arid

DOI	10.1016/S1002-0160(15)30064-3
	Leaf Expansion and Transpiration Responses of Millet Species to Soil Water Deficit
	Esmaeilzade-Moridani Mahjoubeh; Kamkar Behnam; Galeshi Serollah; Ghaderifar Farshid; Teixeira Da Silva Jaime A
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2015
卷号	25 期号:6 页码:834-843
英文摘要	Plant processes, such as leaf expansion, stomatal conductance and transpiration, are affected by soil water, particularly in waterstressed environments. Quantifying the effects of soil water on plant processes, especially leaf expansion and transpiration, could be useful for crop modeling. In order to quantify the leaf expansion and transpiration in response to soil water deficit in three millet species, common (Panicum miliaceum L.), pearl (Pennisetum glaucum L.)and foxtail (Setaria italica L.)millets, a pot experiment was performed at the Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. The soil water status was characterized by the fraction of transpirable soil water (FTSW). Leaf area and transpiration were measured daily. Relative leaf area expansion (RL)and relative transpiration (RT)data were plotted against FTSW. Finally the FTSW thresholds for RL and RT were calculated using linear-plateau and logistic models. The results showed that the thresholds for RL and RT were 0.68 and 0.62, respectively, based on all measured data of the three millet species using the linear-plateau model, indicating that RL and RT were constant when FTSW decreased from 1 to the threshold point. Thereafter, until FTSW = 0, RL and RT declined linearly with a slope of 1.48 and 1.43, respectively. Although millet is cultivated as a resistant crop in arid, semiarid and marginal lands, it showed an early response to soil water deficit at high FTSW thresholds. As leaf expansion and transpiration can be considered morphological and physiological variables, respectively, the results in this study indicate that millet has strong morphological flexibility when faced with soil water deficit.
英文关键词	linear-plateau model logistic model morphological flexibility plant process resistant crop soil water content threshold
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5556899
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335570
作者单位	Esmaeilzade-Moridani Mahjoubeh, Department of Agronomy, Gorgan University of Agricultural Sciences and Natural Resources (GUASNR), Gorgan, 49189-43464, Iran.; Kamkar Behnam, Department of Agronomy, Gorgan University of Agricultural Sciences and Natural Resources (GUASNR), Gorgan, 49189-43464, Iran.; Galeshi Serollah, Department of Agronomy, Gorgan University of Agricultural Sciences and Natural Resources (GUASNR), Gorgan, 49189-43464, Iran.; Ghaderifar Farshid, Department of Agronomy, Gorgan University of Agricultural Sciences and Natural Resources (GUASNR), Gorgan, 49189-43464, Iran.; Teixeira Da Silva Jaime A, P.O. Box 7, Miki-cho Post Office, Kagawa-ken, 761-0799, Japan.
推荐引用方式 GB/T 7714	Esmaeilzade-Moridani Mahjoubeh,Kamkar Behnam,Galeshi Serollah,et al. Leaf Expansion and Transpiration Responses of Millet Species to Soil Water Deficit[J],2015,25(6):834-843.
APA	Esmaeilzade-Moridani Mahjoubeh,Kamkar Behnam,Galeshi Serollah,Ghaderifar Farshid,&Teixeira Da Silva Jaime A.(2015).Leaf Expansion and Transpiration Responses of Millet Species to Soil Water Deficit.Pedosphere,25(6),834-843.
MLA	Esmaeilzade-Moridani Mahjoubeh,et al."Leaf Expansion and Transpiration Responses of Millet Species to Soil Water Deficit".Pedosphere 25.6(2015):834-843.