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

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