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| ▒ Home | > | | 연구정보 (Information) | > | 국내연구정보 (Domestic information) |
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| Most Suitable Time for Pollen Collection |
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| 글쓴이 : 관리자
날짜 : 09-03-18 17:54
조회 : 9974
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Effect of inbreeding in Korean white pine, Pinus koraiensis S. & Z. Ⅰ. The Most Suitable Time for Pollen Collection <Kor. J. Breed. 13(3):231-237 1981> Corresponding author jasonyi@kangwon.ac.kr
This investigation of pollen formation and germination, and strobilus characteristics in Pinus koraiensis was carried out to determine the most adequate time for pollen collection. The pollen before the first mitotic cell division, not having a prothalial and a central cell, did not germinate; only the pollen containing 2 to 4 nuclei (after the first, second, or third mitotic division) germinated. The pollen procured from the male strobili (which were dried in the shade for 3 days immediately after collection) showed 59% germination rate. At this stage, the pollen grains completed the third mitotic cell division. The staminate flowers were a light yellow-green. The tip part of staminate strobilus was tinted with dull red or deep red-purple spots. The bracts were bent back and individual sporangia separated each other. The pollen at the stage of dispersion showed germination rate of 99%.
Key words: pollen collection time, male strobili color, pollen germination rate
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