MySheen

Seed collection time and method of Pinus koraiensis?

Published: 2024-11-10 Author: mysheen
Last Updated: 2024/11/10, The time and method of seed collection of Pinus koraiensis are as follows: the number of fruiting trees in the 80-100-year-old stand of Pinus koraiensis accounts for more than 91%. In order to solve the problem of seed shortage of Pinus koraiensis, clonal seed orchard has been established, but it has not borne a lot of fruit at present. On the other hand, the stand with good site conditions and strong growth in the natural forest should be designated as the mother forest, and the tending management should be strengthened to prepare for seed collection. Korean pine cones mature from September to early October, when the cones change from green to yellowish green, some seed scales crack and enter the early ripening stage. After that, the seed scales gradually turned yellow, and individual cones began to fall off.

The time and method of seed collection of Pinus koraiensis are as follows: the number of fruiting trees in the 80-100-year-old stand of Pinus koraiensis accounts for more than 91%. In order to solve the problem of seed shortage of Pinus koraiensis, clonal seed orchard has been established, but it has not borne a lot of fruit at present. On the other hand, the stand with good site conditions and strong growth in the natural forest should be designated as the mother forest, and the tending management should be strengthened to prepare for seed collection. Korean pine cones mature from September to early October, when the cones change from green to yellowish green, some seed scales crack and enter the early ripening stage. After that, the seed scales gradually turn yellow, individual cones begin to fall off, and the fruit is ripe, so it should be collected in time. The collected cones were ripened in a ventilated and dry place. Be careful not to make it hot. When the scales of most cones separate, they can be threshed. Then water selection, drying, removal of impurities, when the seed moisture content is reduced to 9%, it can be put into an iron bucket and placed in a ventilated and dry seed bank or underground bank; stored at 4 degrees Celsius. The 1000-seed weight of Korean pine seeds varies greatly, from about 600 grams for large seeds, 350 to 400 grams for medium seeds and 270 grams for small seeds.

 
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