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Study on Sexual Reproduction Technology of Cerasus discoidea

机译：蝶形斑Sex有性生殖技术研究

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摘要

Cerasus discoidea Yü et Li is an endemic species of wild cherry in China.In order to protect germplasm resources reasonably, in this study, the sexual reproduction was investigated.The results show that the seeds of C.discoidea can be stored by sealed dry storage method between 3 to 5℃.The water content of the seeds was between 2 to 4％, and seed vigor ranged from 99.3 to 100％, during the storage period.Selective sowing in two kinds of growing media decreased the rate of dwarfing seedlings by 0.7 and 1.1％ respectively when compared to random sowing.And the emergence rate of selective sowing in two kinds of growing media is 99.0 and 96.5％ respectively.Meanwhile, organic substrate containing more than 50％ organic matter, and more than 2.5％ nitrogen, phosphorus and potassium is more conducive to emergence and growth.After the seeds were sown for 150 days, the average height of seedlings was 44.67 cm, and base diameter was 2.77 mm, with seedlings having 16 true leaves.After dry stones were stored sealed under low temperature until autumn, then they were stratified under the constant temperature 3-5℃ for 30 days and then under the natural variable low temperature in winter.After that, field seedbed nursery was conducted, and seed germination rate was 28.4％ in the spring, and the seedlings grew fast.
机译：Cerasus discoideaYüet Li是中国野樱桃的特有种。为了合理地保护种质资源，本研究对有性繁殖进行了研究。结果表明，可通过密封干燥贮藏来保存C.discoidea种子。贮藏期间种子含水量在2〜4％之间，种子活力在99.3〜100％之间;两种生长介质的选择性播种降低了矮化苗的发生率。与随机播种相比，选择性播种在两种生长介质中的发生率分别为99.0％和96.5％。同时，有机基质中有机物含量超过50％，氮含量超过2.5％，磷和钾更有利于出苗和生长。播种150天后，幼苗平均高度为44.67厘米，底径为2.77毫米，幼苗有16片真叶。在低温下密封保存至秋季，然后在3-5℃的恒温下分层30天，然后在冬季的自然可变低温下分层。此后，进行田间苗床育苗，种子发芽率为28.4％在春季，幼苗生长迅速。

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