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| ▒ Home | > | | 연구정보 (Information) | > | 국내연구정보 (Domestic information) |
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| Effects of Seed Size and Weight on Growth of First-Year Seedlings |
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| 글쓴이 : 관리자
날짜 : 08-11-27 10:50
조회 : 9964
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Effects of Seed Size and Weight on Growth of First-Year Seedlings in Pinus koraiensis <Jour. Kor. For. Soc. 31:48-52 1976> Sang-Keun Chon
In order to investigate the effects of seed weight, size (length and thickness), and maturation period (early maturing seed of late maturing seed) on growth of first-year seedlings in Pinus koraiensis, pot cultivation experiment using seeds collected from Kangwon National University Forest was carried out under relatively controlled environment condition. At the end of one growing season, not only fresh weight, length, diameter(at underside of cotyledons) and root length of seedlings, but also number and length of cotyledon were measured. Results were as follows:
1) Germination percentage was independent of weight and size of seeds, but it was influenced by maturation period, that is, late maturing seeds surpass early maturing one in germination percentage. 2) Germination percentage was affected by maturation period of seeds in 18.3% of contribution rate. 3) Each growth of first-year seedlings was influenced considerably by the differences of weight, length and thickness of seeds, that is, heavy and large seeds produced larger seedlings than do light and small seeds. Particularly, fresh weight, diameter, length of cotyledon were significantly affected by differences of seed weight and size (length and thickness) in 50-90% of contribution rate. 4) Differences of seed weight and thickness had a tendency to affect more on growth of first-year seedlings than do differences of seed length. 5) Seedlings from late maturing seeds were superior to those from early maturing ones in fresh weight, diameter of seedlings and length of cotyledon, but it's influence was a little.
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