| 植物根际钾富集及钾分布的基因型差异 |
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| 作者姓名： | YAN Wei-Dong SHI Wei-Ming LIAO Hai-Qiu CAO Zhi-Hong |
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| 作者单位： | Institute of Soil Science, Academia Sinica, Naniing 210008 (China);Institute of Soil Science, Academia Sinica, Naniing 210008 (China);Institute of Soil Science, Academia Sinica, Naniing 210008 (China);Institute of Soil Science, Academia Sinica, Naniing 210008 (China) |
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| 基金项目： | *1Project supported by the National Natural Science Foundation of China (No. 39370067) and the Distinguished Youth Science and Technology Foundation. |
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| 摘 要： | Plant genotypic difference of potassium-enrichment capability and potassium (K) distribution at root-soil interface of different plant genotypes were studied by using seven plant species and eight varieties of tobacco (Nicotiana tabacum L.). The results indicated that K enrichment capability was: Ethiopian guizotia (Guizotia abyssinica Cass.)>feather cockscomb (Celosia argentea L.)>alligator alternanthera (Alternanthera philoxeroides (Mart.) Griseb.)> tobacco>sesbania (Sesbania cannabina (Retz.) Pers.)>wheat (Triticum aestivum L.)>broadbean (Vicia faba L.). Ethiopian guizotia showed very high K-enrichment capability at different soil K levels, and the K content in its dry matter was over 110 mg kg-1 when soil K was fully supplied, and about 60 mg kg-1 when no K fertilizer was applied. For alligator alternanthera, the capability to accumulate K was closely related with its growth medium. When it was grown on soils, both the K content and K uptake rate of the plant were similar to those of tobacco. Evident K depletion was observed in the rhizosphere of all plant species, and the depletion rate was related to the capability of K enrichment of plant.
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| 关 键 词： | 富钾植物 富集作用 遗传 根围 烟草 |
Genotypic difference of plants in K-enrichment capability and the distribution of K in plant rhizosphere |
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| YAN Wei-Dong,SHI Wei-Ming,LIAO Hai-Qiu,CAO Zhi-Hong.Genotypic difference of plants in K-enrichment capability and the distribution of K in plant rhizosphere[J].Pedosphere,1997,7(2):165-170. |
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| Authors: | YAN Wei-Dong SHI Wei-Ming LIAO Hai-Qiu and CAO Zhi-Hong |
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| Institution: | Institute of Soil Science, Academia Sinica, Naniing 210008 (China);Institute of Soil Science, Academia Sinica, Naniing 210008 (China);Institute of Soil Science, Academia Sinica, Naniing 210008 (China);Institute of Soil Science, Academia Sinica, Naniing 210008 (China) |
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| Abstract: | Plant genotypic difference of potassium-enrichment capability and potassium (K) distribution at root-soil interface of different plant genotypes were studied by using seven plant species and eight varieties of tobacco (Nicotiana tabacum L.). The results indicated that K enrichment capability was: Ethiopian guizotia (Guizotia abyssinica Cass.)>feather cockscomb (Celosia argentea L.)>alligator alternanthera (Alternanthera philoxeroides (Mart.) Griseb.)> tobacco>sesbania (Sesbania cannabina (Retz.) Pers.)>wheat (Triticum aestivum L.)>broadbean (Vicia faba L.). Ethiopian guizotia showed very high K-enrichment capability at different soil K levels, and the K content in its dry matter was over 110 mg kg-1 when soil K was fully supplied, and about 60 mg kg-1 when no K fertilizer was applied. For alligator alternanthera, the capability to accumulate K was closely related with its growth medium. When it was grown on soils, both the K content and K uptake rate of the plant were similar to those of tobacco. Evident K depletion was observed in the rhizosphere of all plant species, and the depletion rate was related to the capability of K enrichment of plant. |
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| Keywords: | K-enriched plants K enrichment rhizosphere tobacco (Nicotiana tabacum L ) |
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