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No.28 (1981/11) >

 
Title :マングローブ樹種の生長に関する予備実験 (II) : ヤエヤマヒルギ胎生種子の初期発育に及ぼす塩分と施肥の影響(林学科)
Title alternative :Preliminary studies on the growth of the mangrove species in Japan (II) : Effect of salinity and nutrient on bud break, root initiation and early growth of Rhizophora stylosa viviparous seeds (Department of Forestry)
Authors :中須賀, 常雄
馬場, 繁幸
Authors alternative :Nakasuga, Tsuneo
Baba, Shigeyuki
Issue Date :30-Nov-1981
Abstract :ヤエヤマヒルギ胎生種子の開芽, 発根および主軸, 根の伸長に及ぼす塩分と施肥の影響について水耕法で実験した。塩分に関する実験は1980年7月末に西表島船浦湾で採取した胎生種子96個体を使用して, 8月初めより翌年2月まで約6ケ月間おこなった。ヤエヤマヒルギの開芽と根の初期伸長は1.3%の塩分濃度でも抑制された。施肥に関する実験は1980年8月末に西表島船浦湾で採取した胎生種子68個体を使用して9月初めから翌年3月中旬までの約6ケ月間実施した。開芽および主軸と根の伸長において施肥効果が明らかに認められた。
Effect of salinity and nutrient on bud break, root initiation and early growth was examined in viviparous seeds of Rhizophora stylosa. The viviparous seeds were cultured by water culture method. To investigate the effect of salinity, twelve seeds were cultured in 4.0%, 2.7%, 1.3% salt concentrations and tapwater, respectively. Each treatment was divided into bubbling and non bubbling treatments. The seeds were maintained in the greenhouse for 6 months from August 1980 to Febrary 1981. Bud break was inhibited even in 1.3% salt concentration and root initiation was inhibited in 2.7% salt concentration. In all salt concentrations and tapwter, effect of bubbling did not seen appearently. To investigate the effect of nutrient, seventeen seeds were cultured in nutrient solution and tapwater, respectively. Each treatment replicated three times. In R. stylosa viviparous seeds, bud break, shoot and root elongation were better in nutrient solution than in tapwater.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/4073
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.28 p.287 -293
Appears in Collections:No.28 (1981/11)

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