Integrated after-ripening method of taxus cuspidate seeds

Abstract

The invention relates to the field of treatment of plant seeds, namely an integrated after-ripening method of taxus cuspidate seeds. The integrated after-ripening method comprises the following steps that: variable-temperature treatment of seeds is divided into two phases; variable-temperature amplitude and time of the first phase are as follows: the temperature at daytime is 23+ / -2 DEG C and the treatment time is 14 hours; the temperature at night is 15+ / -2 DEG C and the treatment time is 10 hours; the treatment time of the first phase is 80-95 days; and variable-temperature amplitude and time of the second phase are as follows: the temperature at daytime is 15+ / -2 DEG C and the treatment time is 6 hours; the temperature at night is 3+ / -2 DEG C and the treatment time is 18 hours; the treatment time of the first phase is 75-90 days. The taxus cuspidate seeds can finally grow to directly-germinated mature cotyledon embryo seeds from a heart-shaped embryo post-period or cotyledon embryo initial period; and after the seeds are sowed for 45 days, the seed germination rate of the taxus cuspidate seeds can reach more than 85.0%. The method has the advantages of short time for treating the taxus cuspidate seeds, strong maneuverability, very high germination rate and the like, belongs to an integrated one-step after-ripening technology and can be widely applied to industrial seedling growth and scaled cultivation of the taxus cuspidate.

Description

[0001] [0002] Technical field [0003] The invention involves a field of plant seed treatment, that is, a method of cooked by a northeast yew seeds. Background technique [0004] Among the existing technology, Northeast Equise ( Taxus cuspidata Sieb. Et zucc.) Also known as patto and red plate pine, red bean family red beans belong to evergreen trees. This species is scarce in the Changbai Mountain area, and the distribution area is very narrow.Large population area, other areas only sporadic distribution.The "National Key Protection of Wild Plants (First Batch)" is designated as a national first -level key protected plant.The "Red List of Chinese Species" is designated as the Yidi species (VU).In the article "Interim Regulations on the Protection of Wild Dynamics and Plants in Jilin Province", it is designated as a provincial -level key protection plant.Northeast Red Dou is not only a plant, but also an important medicinal plant. Its stems, branches, leaves, and roots can be us...

AI Technical Summary

Problems solved by technology

[0005] Northeast yew is propagated by cuttings or seeds. After the fruit matures, the seed embryo in the seed is in the late stage of the heart-shaped embryo or the early stage of the cotyledon embryo. In addition, the seed coat is hard, and it is difficult for the seed embryo to break the shell and germinate after it matures. Therefore, the seed It does not germinate in the same year after sowing, and only a few germinate after 2 to 3 years. The cutting propagation not only has a very low rooting rate, but most of the plants are shrubs, which is not conducive to afforestation, and leads to the threat of extinction of wild resources.

Therefore, large-scale artificial cultivation, development and utilization are greatly limited