伊貝根際微生物分布與西貝素的相關性
潘惠霞* 程爭鳴 牟書勇 齊曉玲 包群
(中國科學院新疆生態(tài)與地理研究所 中國科學院干旱區(qū)生物地理與生物資源重點實驗室 新疆 烏魯木齊 830011)
摘 要: 分析了伊犁貝母不同生育期(返青期,、顯蕾期,、盛花期和收獲期)根際、非根際可培養(yǎng)土壤微生物動態(tài)變化, 探討了根際土壤微生物與西貝素含量之間的相關性,。結果表明, 在伊犁貝母的生長發(fā)育期, 根際和非根際土壤微生物數(shù)量的分布規(guī)律是: 細菌 > 放線菌 > 真菌。除了顯蕾期非根際真菌數(shù)量大于根際以外, 其他生長時期根際細菌,、放線菌和真菌數(shù)量遠遠大于非根際, 細菌根際效益明顯,。盛花期根際土壤中細菌和真菌數(shù)量達到了最多。土壤真菌與西貝素含量呈極顯著正相關,。
關鍵詞: 伊犁貝母, 根際微生物, 西貝素, 相關性
Distribution of Rhizosphere Soil Microbes of Fritillaria pallidiflora and Their Correlation with Imperialine Content
PAN Hui-Xia* CHENG Zheng-Ming MU Shu-Yong QI Xiao-Ling BAO Qun
(The Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Xinjiang
Institute of Ecology and Geography Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China)
Abstract: Variation of rhizosphere and non-rhizosphere cultured soil microbes at the different growth stages of Fritillaria pallidiflora were analysed. The correlation of rhizosphere soil microbes with imperialine content were discussed. The results showed that the ecological distribution characteristics of rhizosphere and non-rhizosphere soil microbes at every growth stages (Re-greening stage, bud stage, full flowering stage and harvest-time) of Fritillaria pallidiflora were all bacteria > actinomycete > fungi. Only in bud stage, non-rhizosphere fungi number is more than rhizosphere's. At other stages rhizosphere bacteria, actinomycete and fungi were more than non-rhizosphere's. Especially, for bacteria, the rhizosphere effect of Fritillaria pallidiflora was obvious. Number of bacteria and fungi in the rhizosphere soil of full flowering stage are most in all stages. Soil fungi number had extremely marked positive correlation with imperialine content.
Keywords: Fritillaria pallidiflora, Rhizosphere microbes, Imperialine, Correlation
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