Aerial seed germination and morphological characteristics of juvenile seedlings in Commelina benghalensis L.
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概要
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The definitive version is available at www.blackwell-synergy.com. (C)Blackwell PublishingSeed germination, seedling emergence, and the morphological characteristics of juvenile seedlings of Commelina benghalensis L. were observed. For aerial seeds collected in September and October, seedling emergence peaked in April and June for large seeds and from June to August for small seeds, whereas seedling emergence for large seeds collected in November showed peaks in March and April under natural rainfall conditions, and in April and June under irrigation conditions. Seedlings from small seeds emerged intermittently over a longer period from April to August under both conditions. Aerial seeds of C. benghalensis germinated on wet filter paper the 2nd day after seeding (DAS) for large seeds and the fourth DAS for small ones. The germination percentage for large seeds was higher than that for small ones by the 14th DAS. The germination percentage for large aerial seeds showed no significant difference between light and dark conditions. However, the percentage for small aerial seeds was higher under light than under dark conditions. Seedlings from large aerial seeds emerged on the 3rd DAS at 0 to 50 mm soil depths. The percentage of emergence at 0 and 1 mm soil depths increased until the 30th DAS, whereas those at soil depths of 5 to 50 mm showed no change after the 9th DAS. There was no emergence at a soil depth of 100 mm. Seedlings from small aerial seeds emerged on the 6th DAS at 0 to 1 mm soil depths with the percentage increasing until the 30th DAS. Though seedlings at 5 and 10 mm soil depths also emerged on the 6th DAS, there was no change in the percentage after the 12th DAS. There was no emergence at soil depths of 20 to 100 mm. The hypocotyl and taenia (part of the cotyledon connected to the seed) in juvenile seedlings that emerged from soil depths of 50 mm were longer than those in seedlings emerging from a soil depth of 1 mm.
- Blackwellの論文
- 2004-07-01
著者
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Terao Hiroyuki
Faculty Of Agriculture University Of Miyazaki
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Terao Hiroyuki
Faculty Of Agriculture Kyushu University
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Tsuzuki Eiji
Faculty of Agriculture, Miyazaki University
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Matsuo Mitsuhiro
Faculty of Agriculture, Miyazaki University
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MICHINAGA HIDEKI
Faculty of Agriculture, University of Miyazaki
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Michinaga Hideki
Faculty Of Agriculture University Of Miyazaki
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Tsuzuki Eiji
Faculty Of Agriculture Miyazaki University
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Tsuzuki Eiji
Faculty Of Agriculture University Of Miyazaki
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Matsuo Mitsuhiro
Faculty Of Agriculture University Of Miyazaki
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