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Paclobutrazol Improves Sesame Yield by Increasing Dry Matter Accumulation and Reducing Seed Shattering Under Rainfed Conditions

Mehmood, Muhammad Zeeshan and Qadir, Ghulam and Afzal, Obaid and Din, Atta Mohi Ud and Raza, Muhammad Ali and Khan, Imran and Hassan, Muhammad Jawad and Awan, Samrah Afzal and Ahmad, Shakeel and Ansar, Muhammad and Aslam, Muhammad Aqeel and Ahmed, Mukhtar (2021). Paclobutrazol Improves Sesame Yield by Increasing Dry Matter Accumulation and Reducing Seed Shattering Under Rainfed Conditions. International Journal Of Plant Production. 15 , 337-349
[Research article]

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Abstract

Several biotic and abiotic stresses significantly decrease the biomass accumulation and seed yield of sesame crops under rainfed areas. However, plant growth regulators (such as Paclobutrazol) can improve the total dry matter and seed production of the sesame crop. The effects of the paclobutrazol application on dry matter accumulation and seed yield had not been studied before in sesame under rainfed conditions. Therefore, a two-year field study during 2018 and 2019 was conducted with key objectives to assess the impacts of paclobutrazol on leaf greenness, leaf area, total dry matter production and partitioning, seed shattering, and seed yield of sesame. Two sesame cultivars (TS-5 and TS-3) were treated with four paclobutrazol concentrations (P0 = Control, P1 = 100 mg L-1, P2 = 200 mg L-1, P3 = 300 mg L-1). The experiment was executed in RCBD-factorial design with three replications. Compared with P0, treatment P3 improved the leaf greenness of sesame by 17%, 38%, and 60% at 45, 85, and 125 days after sowing, respectively. However, P3 treatment decreased the leaf area of sesame by 14% and 20% at 45 and 85 days after sowing than P0, respectively. Compared with P0, treatment P3 increased the leaf area by 46% at 125 days after sowing. On average, treatment P3 also improved the total biomass production by 21% and partitioning in roots, stems, leaves, capsules, and seeds by 23%, 19%, 23%, 22%, and 40%, respectively, in the whole growing seasons as compared to P0. Moreover, under P3 treatment, sesame attained the highest seed yield and lowest seed shattering by 27% and 30%, respectively, compared to P0. This study indicated that by applying the paclobutrazol concentration at the rate of 300 mg L-1 in sesame, the leaf greenness, leaf areas, biomass accumulation, partitioning, seed yield, and shatter resistance could be improved. Thus, the optimum paclobutrazol level could enhance the dry matter accumulation and seed production capacity of sesame by decreasing shattering losses under rainfed conditions.

Authors/Creators:Mehmood, Muhammad Zeeshan and Qadir, Ghulam and Afzal, Obaid and Din, Atta Mohi Ud and Raza, Muhammad Ali and Khan, Imran and Hassan, Muhammad Jawad and Awan, Samrah Afzal and Ahmad, Shakeel and Ansar, Muhammad and Aslam, Muhammad Aqeel and Ahmed, Mukhtar
Title:Paclobutrazol Improves Sesame Yield by Increasing Dry Matter Accumulation and Reducing Seed Shattering Under Rainfed Conditions
Series Name/Journal:International Journal Of Plant Production
Year of publishing :2021
Volume:15
Page range:337-349
Number of Pages:13
Publisher:SPRINGER
ISSN:1735-6814
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Oilseed, Growth regulator, Leaf greenness, Leaf area, Seed number, Seed yield
URN:NBN:urn:nbn:se:slu:epsilon-p-111012
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111012
Additional ID:
Type of IDID
DOI10.1007/s42106-021-00132-w
Web of Science (WoS)000617490000001
ID Code:25310
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Agricultural Research for Northern Sweden
(VH) > Dept. of Agricultural Research for Northern Sweden
Deposited By: SLUpub Connector
Deposited On:13 Sep 2021 05:25
Metadata Last Modified:13 Sep 2021 05:31

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