Effect of Shading on Leaf Anatomical Structure, Photosynthesis Characteristics and Chlorophyll Fluorescence of Soybean (Glycine max)

IF 3.7 2区农林科学 Q1 AGRONOMY

Journal of Agronomy and Crop Science Pub Date : 2024-11-20 DOI:10.1111/jac.12783

Kanchan Jumrani, Virender Singh Bhatia, Sajad Hussain, Sunita Kataria, Xinghong Yang, Marian Brestic

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Abstract

The present study aimed to investigate the effect of different shade treatments (0%, 35%, 50% and 75%) on physiological traits and yield attributes of two soybean genotypes namely JS 97-52 and JS 95-60. The results clearly showed that plants which were grown under control conditions exhibited the highest values for specific leaf weight, chlorophyll content, leaf thickness and stomatal density, whereas the lowest values were observed in plants subjected to 75% shading. Moreover, a significant reduction in photosynthetic rate, stomatal conductance and electron transport rate was observed with decreased solar radiation. Performance index, fluorescence area, Fv/Fo, Fo/fm, ABS/CSo, DIo/CSo, TRo/CSo and ETo/CSo were also reduced under heavy shade. Seed yield was reduced by 24%, 47% and 62% in JS 97-52 and by 51%, 82% and 92% in JS 95-60 under 35%, 50% and 75% shading, respectively, compared to the control conditions. Therefore, to enhance crop productivity under intercropping, the effects of shade should be taken into consideration.

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遮光对大豆（Glycine max）叶片解剖结构、光合作用特征和叶绿素荧光的影响

本研究旨在调查不同遮荫处理（0%、35%、50% 和 75%）对 JS 97-52 和 JS 95-60 这两种大豆基因型的生理特征和产量属性的影响。结果清楚地表明，在对照条件下生长的植株在比叶重、叶绿素含量、叶片厚度和气孔密度方面表现出最高值，而在 75% 遮光条件下生长的植株则表现出最低值。此外，随着太阳辐射的减少，光合速率、气孔导度和电子传递速率也明显下降。重度遮荫下的表现指数、荧光面积、Fv/Fo、Fo/fm、ABS/CSo、DIo/CSo、TRo/CSo 和 ETo/CSo 也都有所降低。与对照条件相比，在 35%、50% 和 75% 遮光条件下，JS 97-52 的种子产量分别减少了 24%、47% 和 62%，JS 95-60 的种子产量分别减少了 51%、82% 和 92%。因此，要提高间作作物的产量，应考虑遮荫的影响。

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来源期刊

Journal of Agronomy and Crop Science 农林科学-农艺学

CiteScore

8.20

自引率

5.70%

发文量

审稿时长

7.8 months

期刊介绍： The effects of stress on crop production of agricultural cultivated plants will grow to paramount importance in the 21st century, and the Journal of Agronomy and Crop Science aims to assist in understanding these challenges. In this context, stress refers to extreme conditions under which crops and forages grow. The journal publishes original papers and reviews on the general and special science of abiotic plant stress. Specific topics include: drought, including water-use efficiency, such as salinity, alkaline and acidic stress, extreme temperatures since heat, cold and chilling stress limit the cultivation of crops, flooding and oxidative stress, and means of restricting them. Special attention is on research which have the topic of narrowing the yield gap. The Journal will give preference to field research and studies on plant stress highlighting these subsections. Particular regard is given to application-oriented basic research and applied research. The application of the scientific principles of agricultural crop experimentation is an essential prerequisite for the publication. Studies based on field experiments must show that they have been repeated (at least three times) on the same organism or have been conducted on several different varieties.