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Predication of Photosynthetic Leaf Gas Exchange of Sugarcane (Saccharum spp) Leaves in Response to Leaf Positions to Foliar Spray of Potassium Salt of Active Phosphorus under Limited Water Irrigation

文献类型： 外文期刊

作者： Verma, Krishan K. 1 ; Song, Xiu-Peng 1 ; Verma, Chhedi Lal 2 ; Malviya, Mukesh Kumar 1 ; Guo, Dao-Jun 1 ; Rajput, V 1 ;

作者机构： 1.Chinese Acad Agr Sci, Guangxi Acad Agr Sci, Sugarcane Res Ctr,Guangxi Key Lab Sugarcane Genet, Sugarcane Res Inst,Minist Agr & Rural Affairs,Key, Nanning 530007, Guangxi, Peoples R China

2.ICAR Cent Soil Salin Res Inst, Reg Res Stn, Irrigat & Drainage Engn, Lucknow 226005, Uttar Pradesh, India

3.Guangxi Univ, Coll Agr, Nanning 530004, Guangxi, Peoples R China

4.Southern Fed Univ, Acad Biol & Biotechnol, Rostov Na Donu 344006, Russia

5.Liuzhou Inst Agr Sci, Liuzhou 545003, Guangxi, Peoples R China

6.Chinese Acad Agr Sci, Guangxi Acad Agr Sci, Inst Biotechnol, Nanning 530007, Guangxi, Peoples R China

7.ICAR Indian Inst Sugarcane Res, Lucknow 226021, Uttar Pradesh, India

期刊名称：ACS OMEGA （ 影响因子：3.512； 五年影响因子：3.613 ）

ISSN： 2470-1343

年卷期： 2021 年 6 卷 3 期

页码：

收录情况： SCI

摘要： Sufficient water and fertilizer inputs in agriculture play a major role in crop growth, production, and quality. In this study, the response of sugarcane to limited water irrigation and foliar application of potassium salt of active phosphorus (PSAP) for photosynthetic responses were examined, and PSAP's role in limited water irrigation management was assessed. Sugarcane plants were subjected to limited irrigation (95-90 and 45-40% FC) after three months of germination, followed by a foliar spray (0, 2, 4, 6, and 10 M) of PSAP. The obtained results indicated that limited water irrigation negatively affected sugarcane growth and reduced leaf gas exchange activities. However, the application of PSAP increased the photosynthetic activities by protecting the photosynthetic machinery during unfavorable conditions. Mathematical modeling, a Skewed model, was developed and compared with the existing Gaussian model to describe the photosynthetic responses of sugarcane leaves under the limited irrigation with and without PSAP application. The models fitted well with the observed values, and the predicted photosynthetic parameters were in close relationship with the obtained results. The Skewed model was found to be better than the Gaussian model in describing the photosynthetic parameters of plant leaves positioned over a stem of limited water irrigation and applied PSAP application and is recommended for further application.

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