Study on seed germination and seedling growth of Luntai white apricot with different treatments
[Objective]In order to provide a theoretical basis for revealing the dormancy mechanism of apricots and provide technical support for efficient and scientific seedling raising by means of mastering the best method of culturing seedling Luntai white apricot.[Method]The seeds of Luntai white apricot were taken as the research object.Hormone method,warm soup soaking method,low temperature layering method and hormone + low temperature layering method were set up to break the seed dormancy,the germination rate was counted,the germinated seeds were sown into the soil,and the seedling characteristics were measured after 30 days.[Result](1)The germination rate of non-peeled seeds was very low when soaking with GA3 and warm soup,indicating that Luntai white apricot had the dormant characteristics of seed coat.The seeds of Luntai white apricot in the shell began to germinate after 80 days of low temperature layering,indicating that the seeds of Luntai white apricot had the dormant characteristics of seed shell.(2)Among different treatments,the germination rate and seedling emergence rate of two treatments were higher,among which 500mg/L GA3 treatment of semi-peeled white apricot seeds had a germination rate of 94.00%and a seedling emergence rate of 88.00%.The seedlings had developed roots and were not easy to excessive grow,and the seedlings cost was the lowest,276 yuan per thousand plants,and the seedling efficiency was the highest.The highest germination rate was 80.67%after 120 days of low temperature low-temperature layered shell seeds,the seedling emergence rate of all low-temperature layered treatments was less than 70%,and the seedling cost was higher and the efficiency was the lowest.(3)Soaking the seeds with hormones for 24 hour and then layering comprehensive treatments showed that the germination rate and seedling emergence rate of Luntai white apricot seeds were not high,about 70%,the cost was the highest,and the seedling raising efficiency was not high.[Conclusion]The comprehensive analysis showed that apricot had the dormancy characteristics of seed coat and seed shell.Soaking semi-peeled seeds in 500 mg/L GA3 for 24h and soaking fully peeled white apricot seeds at 50 ℃ for 30 min were lower breeding cost and higher efficiency,which could be used as a seedling breeding method in production.
seed coat dormancyseed shell dormancyhormonelow-temperature layeringsoak in warm soup
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