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秦民坚, 李贵英, 山口茂治, 田中俊弘, 徐国钧. 温度对射干种子萌发影响的试验研究[J]. 植物科学学报, 2000, 18(2): 151-156.
引用本文: 秦民坚, 李贵英, 山口茂治, 田中俊弘, 徐国钧. 温度对射干种子萌发影响的试验研究[J]. 植物科学学报, 2000, 18(2): 151-156.
Qin Minjian, Li Guiying, Shigeharu Yamaguchi, Toshihiro Tanaka, Xü Guojun. STUDIES ON GERMINATION OF SEEDS OF BELAMCANDA CHINENSIS (L.)DC.INFLUENCED BY TEMPERATURE[J]. Plant Science Journal, 2000, 18(2): 151-156.
Citation: Qin Minjian, Li Guiying, Shigeharu Yamaguchi, Toshihiro Tanaka, Xü Guojun. STUDIES ON GERMINATION OF SEEDS OF BELAMCANDA CHINENSIS (L.)DC.INFLUENCED BY TEMPERATURE[J]. Plant Science Journal, 2000, 18(2): 151-156.

温度对射干种子萌发影响的试验研究

STUDIES ON GERMINATION OF SEEDS OF BELAMCANDA CHINENSIS (L.)DC.INFLUENCED BY TEMPERATURE

  • 摘要: 对射干〔Belamcanda chinensis(L.)DC.〕种子萌发中温度的影响进行了研究, 结果表明射干种子的萌发温度为5~30℃, 恒温条件下的萌发率不高, 且持续时间较长。低温或高温向15~25℃变温可以提高种子萌发率。15~25℃向低温或高温变温萌发率下降。15~25℃之间的变温萌发率变化不大。昼夜温度周期30℃(昼8h)/15℃(夜16h)及35℃(昼8h)/20℃(夜16h)组萌发率都达到64%。周期变温组20℃(5d)/35℃(10d)、20℃(5d)/10℃(10d)、20℃(5d)/35℃(10d)/20℃(5d)/10℃(10d)的萌发率分别为54.5%、20%、35.5%。5℃和35℃处理种子40d内, 随处理时间增加, 萌发速度和萌发率相应增加。-5℃贮藏1年的陈种子在恒温条件下, 萌发率比新种子有所提高, 但其变温组的萌发率低于新鲜种子变温组。表明随贮藏时间增加, 射干的种子活力有所下降, 但幅度不大。

     

    Abstract: The studies on germination of seeds of Belamcanda chinensis (L.) DC.inflenced by temperature were carried out.The seeds of "Shegan" Belamcanda chinensis (L.) DC.germinated at 5~30℃.Under the condition of the constant temperature, the germination rates of the fresh seeds were very low and the germinating continued for long time.When the temperature changed from low or high temperature to the 15~25℃, it increased the germination rates.Inversely, if the temperature changed from 15~25℃ to low or high, the germination rate is dropped.The germination rate changed little when the temperature was alternated among15~25℃.In the day and night alternation of temperature treatment, that is 30℃(day 8 h )/15℃(night 16 h) and 35℃(day 8 h)/20℃(night 16 h), both of the germination rates reached 64%.Periodic alternation of temperature treatment, that is 20℃(5 d)/30℃ (10 d), 20℃(5 d)/10℃(10 d) and 20℃(5 d)/35℃(10 d)/20℃(5 d)/10(10 d), germination rates were 54.5%, 20%, and 355% respectively.The time of the seeds dealt with 5℃ and 35℃ within40 d, as the time of the seeds treated increased, the speeds and germination rates increased relevantly.The germination rates of the seeds stored at -5℃ for one year, were higher than that of the fresh seeds under the condition of the constant temperature, but the germination rates were higher than that of the fresh seeds, but the germination rates of the alternating temperature treatment were lower than that of the fresh seeds.It seemed that the results were the effects of low temperature on the seeds.As the storage time increased, the viability of seeds decreased, but the decreased extent was not obvious.

     

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