Inhibition by Pulp Juice and Enhancement by Ingestion on Germination of Bird-dispersed Prunus Seeds
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概要
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To evaluate what prevents seed germination and why ingestion by birds enhances germination, we carried out germinationexperiments using bird-dispersed seeds of two Prunus species (Prunus sargentii and P. ssiori) in the laboratory. Germination of seedswith following four treatments was compared: "Ingested seeds" excreted after feeding of fruits to birds; "Extracted seeds" deliberately extracted from the fruit pulp; "Juiced seeds" which were supplemented with the juice of the pulp after seeds had been deliberately extracted from the pulp; and "Intact seeds" in untreated whole fruits. Many ingested (27%, 23% in P.sargentii, 18% inp.ssiori) and extracted seeds (24% in P. sargentii, 17% in P. ssiori) germinated, and difference in germination percentages betweeningested and extracted seeds were not significant, for either Prunus species. The Juiced seeds rarely germinated (2% in P. sargentii,6% in P. ssiori), and seeds within intact fruits did not germinate. These results suggest that the fruit pulp and the juice of the pulpinhibit germination and the seeds could germinate without ingestion by birds once they had been manually extracted from pulp. Therefore, it is considered that bird ingestion enhances germination by removing pulp, especially juice of the pulp, in these twoPrunus species.
- 一般社団法人日本森林学会の論文
- 2000-08-16
著者
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八木橋 勉
独立行政法人森林総合研究所東北支所
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Miyamoto Tadaaki
Research Center Hospital For Charged Particle Therapy National Institute Of Radiological Sciences
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Miyamoto Tadaaki
Division Of Radiation Medicine National Institute Of Radiological Sciences
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八木橋 勉
森林総合研 東北支所
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Hayashida Mitsuhiro
Department Of Bioenvironment Faculty Of Agriculture Yamagata University
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Yagihashi Tsutomu
Regeneration Process Laboratory, Forestry and Forest Rroducts Research Institute
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Miyamoto Toshizumi
Ibaraki Prefectural Government Forestry Technology Center
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Yagihashi Tsutomu
Regeneration Process Laboratory Forestry And Forest Rroducts Research Institute
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Miyamoto Toshizumi
Ibaraki Prefectural Forestry Research Institute
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八木橋 勉
森林総研
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