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Agronomy 2018, 8(8), 149; https://doi.org/10.3390/agronomy8080149

Effect of Sulphur Application on Photosynthesis and Biomass Accumulation of Sesame Varieties under Rainfed Conditions

1
College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
2
Department of Agronomy, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46000, Pakistan
3
Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
4
College of Agriculture, Bahadur Sub Campus, Bahauddin Zakariya University, Multan, Layyah 31200, Pakistan
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Received: 26 July 2018 / Revised: 11 August 2018 / Accepted: 13 August 2018 / Published: 16 August 2018
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Abstract

Oilseeds yield response to sulphur (S) has been well investigated but the dynamics of total biomass accumulation (TBA) and partitioning by sesame plants in response to S are not well understood. This study was initiated to investigate the effects of S on sesame, in which four sesame varieties V1, SG-27; V2, SG-30; V3, SG-36; V4, SG-51 and four S treatments T1, 20; T2, 30; T3, 40; T4, 50 kg ha−1 were used. Results revealed that the leaf area index and photosynthetic rate of sesame varieties were significantly higher under T3 with V3. Similarly, S fertilization considerably increased the TBA and maximum TBA was reached at late-flowering with V3 in T3. Relative to T1, plants in T3 had 33 and 23% higher capsule and seed biomass, respectively. Furthermore, total S accumulation and distribution in different plant organs changed with growth stage, at pre-flowering and mid-flowering stage maximum S was found in the stem, whereas at late-flowering and full-maturity stage highest S was recorded in reproductive parts. These results implied that S fertilizers should be applied to agricultural fields to improve oilseed production and by selecting the appropriate and area-specific genotype we can increase sesame seed yield under rainfed conditions. View Full-Text
Keywords: sulphur accumulation; sesame; biomass; photosynthetic rate; leaf area index; seed yield sulphur accumulation; sesame; biomass; photosynthetic rate; leaf area index; seed yield
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Raza, M.A.; Feng, L.Y.; Iqbal, N.; Manaf, A.; Khalid, M.H.B.; ur Rehman, S.; Wasaya, A.; Ansar, M.; Billah, M.; Yang, F.; Yang, W. Effect of Sulphur Application on Photosynthesis and Biomass Accumulation of Sesame Varieties under Rainfed Conditions. Agronomy 2018, 8, 149.

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