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首页> 外文期刊>Research on Crops >Cluster analysis for different rapeseed varieties on seed germination and seedling growth under low temperature stress
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Cluster analysis for different rapeseed varieties on seed germination and seedling growth under low temperature stress

机译：低温胁迫下不同油菜品种对种子萌发和幼苗生长的聚类分析

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摘要

In this study, the authors systematically evaluated the effect of low temperature stress on the germination of rapeseeds for 39 oilseed rape {Brassica napus L.) varieties. The results indicated a significant variation in the low temperature resistanceof the seeds for different rape varieties. Using clustering method, various varieties were divided into different types, among which Huayouza No. 13, Fengyou 5103, Huayouza 95, Huayouza 62 and Fengyou 701 germinated well at low temperatures, while Zhongshuang No. 8 and Zhongshuang No. 11 showed poor germination. Correlation analysis was performed for 18 indices of seed germination, of which any two of germination percentage (GP), emergence percentage (EP), germination index (GI) and seedling vigour index (SVI) had high significant positive correlation, and they were all high significantly negatively correlated to the mean germination time (MGT). The GP was significantly negatively correlated with dry weight (DW). The MGT also showed a negative correlation with the root length (RL) and the total length (TL). The MGT had a statistically significant positive correlation with DW, and a negative correlation with shoot length (SL). Both the Gl and SVI were significantly negatively correlated with DW. No correlation was observed between root to shoot length ratio (RL/ SL) and any other index.
机译：在这项研究中，作者系统地评估了低温胁迫对39个油菜（Brassica napus L.）品种油菜种子发芽的影响。结果表明，不同油菜品种种子的耐低温性差异很大。采用聚类方法，将不同品种分为不同类型，其中华油杂13号，丰油5103，华油杂95，华油杂62和风油701在低温下发芽较好，中双8和中双11发芽较差。对18个种子发芽指数进行了相关性分析，其中发芽率（GP），出苗率（EP），发芽指数（GI）和幼苗活力指数（SVI）中的任何两个均具有极显着的正相关，并且它们都是高与平均发芽时间（MGT）显着负相关。 GP与干重（DW）显着负相关。 MGT还显示出与根长度（RL）和总长度（TL）负相关。 MGT与DW具有统计显着正相关，与苗长（SL）具有负相关。 G1和SVI均与DW显着负相关。根冠长度比（RL / SL）与任何其他指标之间没有相关性。

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