条叶百合种子萌发的研究

研究了不同光、温对条叶百合(Lilium callosum)种子萌发的影响。研究结果表明:(1)避光条件下温度对栽培4年生条叶百合种子萌发影响最大,其种子萌发最适宜温度为25℃, 4~5天开始萌动, 1~2周萌发完全。随着温度的升高或降低其种子萌发率下降。但在5℃时萌发率又有大幅升高, 35℃种子萌发完全受到抑制。(2)同一果序不同位置果实的种子萌发以最下部果实为好,中间果实次之,上部最差。(3)同一果实内中部种子萌发最好,下部种子次之,上部种子最差,上、中、下三部分种子萌发率与其千粒重呈正相关。(4)在相同实验条件下,野生条叶百合与栽培4年生条叶百合种子萌发率一致,但萌发完全时间比栽培条叶百合多14天。(5)贮藏一年后条叶百合种子萌发率没有下降。

STUDY ON THE GERMINATION OF LILIUM CALLOSUM

The effect of light and temperature on seed germination of Lilium callosum was studied in the paper. The results showed that temperature in the dark environment had influence to seed germination of Lilium callosum which had been cultivated for 4 years and its optimum temperature to seed germination was 25℃. Germination began 4~5 days and ceased 1~2 weeks after the initiation of the experiment. The percentage of seeds germination was decreased with increase of decrease of temperature. But the exception was 5℃ when the rate of the seed germination had been greatly improved and seed couldn't germinated at 35℃. Seed germination of different fruit in the same infructescence varied with the fruit's location in the infructescence. Seed germination of the lowest fruit is superior to the middle fruits, then the upset. The result also revealed that seed germination was also influenced by the seed location in the fruit, in which seed in the middle was superior to the lowest and then the upset. Seed germination had positive correlation to the weight of a thousand seeds. Under the same experiment environment, seed germination of wild Lilium callosum kept up with that of cultivated Lilium callosum while the germination duration was also longer than cultivated Lilium callosum for about 14 days. At last, seed germination of Lilium callosum which had been stored indoor for 1 year didn't decrease.