Jifeng Zhu , Xirong Zhou , Jianxia Jiang , Junying Zhang , Yanli Li , Liyong Yang , Weirong Wang , Meiyan Jiang

Shanghai Academy of Agricultural Sciences, Shanghai, 201403 P.R. China
Author    Correspondence author
Molecular Plant Breeding, 2021, Vol. 12, No. 16   doi: 10.5376/mpb.2021.12.0016
Received: 14 May, 2021    Accepted: 17 May, 2021    Published: 25 May, 2021

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Zhu J.F., Zhou X.R., Jiang J.X., Zhang J.Y., Li Y.L., Yang L.Y., Wang W.R., and Jiang M.Y., 2021, The seed germination characteristics under low temperature and spring sowing study of 8 rapeseed varieties, Molecular Plant Breeding, 12(16): 1-7 (doi: 10.5376/mpb.2021.12.0016)

To explore the low temperature germination characteristics of rapeseed, 8 main cultivars were selected for germination experiments in incubators at 20℃, 16℃, 12℃ and 8℃, respectively, to measure and analyze the germination potential, germination rate, root length, bud length, etc. The results showed that there was significant difference in the germination potential of tested rapeseeds at temperatures. And the low temperature of 8℃ was significantly reduced the germination potential. With the decrease of germination temperature, the growth of roots and buds were inhibited significantly. There were significant differences both in temperatures and varieties. The germination potential, root length and bud length could be used as the main index to evaluate seed germination of rapeseed under low temperature. In addition, to screen varieties suitable for spring sowing as green manure, the spring sowing test was carried out. The study found that the fresh grass yield of “Huyouzao No.1” was 1712.53 kg/m², which was much higher than other 7 varieties. Its relative root length was second only to “Huyou17” and its relative bud length next to “Huyoufei No.1” at 8℃, respectively. The results can provide a reference for early spring sowing of rapeseed as green manure.

Rapeseed; Seed germination; Low temperature; Spring sowing