Effect of delayed planting on seed germination and vigor of ten spring Oilseed rape (Brassica napus L.) cultivars

Subject Areas : Crop Production Research

Jahangir Abiyari ¹ , Aydin Hamidi ² , Ataolah Siadat ³ , AmirHossein Shiranirad ⁴

1 - M.Sc. graduate, Department of Agronomy, Dezful Branch, Islamic Azad University, Tehran, Iran.
2 - spcri, iran
3 - Professor, Department of Production and Genetics, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.
4 - Research Professor of Agriculture Research, Education and Extension Organization (AREEO), Seed and Plant Improvement Institute (SPII), Karaj, Iran.

Received: 2023-09-15 Accepted : 2023-12-14 Published : 2024-11-19

Keywords: Cultivar, Oilseed rape, Seed, Sowing date, Viability.,

Abstract :

This study was conducted to evaluate the impact of delayed planting of native plants on weight of 1000-seed, the percentage of normal and abnormal seedlings, percentage of hard seeds, mean time germination (MTG), Coefficient Velocity Germination (CVG) and Mean Daily Germination (MDG) of ten cultivars of spring Oilseed rape in form of Factorial experiment (2¬×¬10) in complete randomized design with four replications in the Seed and Plant Certification and Registration Institute (SPCRI) of Karaj during 2022. Treatments were seeds from planting native plants on common Sowing date (the fifteenth in the Persian month Mehr) and Delayed planting (the fifteenth in the Persian month Bahman) and ten cultivars of spring Oilseed rape (RGS003, Sarigol, Hyola401, Hyola420, Hyola330, RGS006, RG4403, RG405/03, RG405/02 and RGAS0324. The results showed that trait said in two Sowing dates have significant difference together on α=0.01. between of seedling of Cultivars of Oilseed rape in terms of all traits studied except trait of percent of hard seeds that was significant on α= 0.05, remaining traits were significant on α=0.01. As well as the interaction of planting ten Cultivars in all traits except two traits of thousand seed weight and percentage of hard seeds, were significant on α=0.01. comparison of mean interaction impact of Sowing date × cultivar, showed that RGS003 cultivar on common Sowing date and Hyola401 cultivar on delayed planting than other cultivars have better Seed vigor and germination indexes.