| GC-MS analysis of rhizosphere soil organic compounds of potato field under continuous cropping in the Yellow River irrigation region of Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2016.03.01 |
| Key Words: potato rotation continuous cropping soil organic compounds GC-MS analysis |
| Author Name | Affiliation | | SHEN Bao-yun | Gansu Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China
Gansu Tiaoshan Agricultural, Industrial and Commercial (Group) Co., Ltd., Baiyin, Gansu 730400, China | | LI Chao-zhou | Gansu Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China
College of Life Sciences and Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YU Bin | Gansu Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China | | ZHANG Jun-lian | Gansu Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China | | WANG Di | Gansu Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China | | BAI Jiang-ping | Gansu Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China | | WANG Wen | Gansu Tiaoshan Agricultural, Industrial and Commercial (Group) Co., Ltd., Baiyin, Gansu 730400, China | | KANG Xiao-hua | Gansu Tiaoshan Agricultural, Industrial and Commercial (Group) Co., Ltd., Baiyin, Gansu 730400, China | | WANG Hai-long | Gansu Tiaoshan Agricultural, Industrial and Commercial (Group) Co., Ltd., Baiyin, Gansu 730400, China |
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| Abstract: |
| To identify the potato root secreted auto-toxicity compounds under continues cropping, soil solutions from four years continuous cropping field and three years potato/maize rotation field during seedling and flowering stage were analyzed by the GC-MS. About 80% of organic compounds from both samples contained hydrocarbons, benzenes, acids, alcohols, esters, aldehydes, ketones, amides and the derivatives of hydrocarbons. Among these chemicals 13 kinds were only detected from the soil sampled at the seedling stage of continuous cropping. The highest and lowest abundance of chemicals were detected for n-propyl propionate（22.335%） and 2-undecenal (0.258%), respectively. Additional seven kinds of chemicals were detected from the soil sample at flowering stage, the palmitic acid isopropyl ester was identified as one of the plant auto-toxicities. Compared with flowering stage, seedling stage had twelve chemicals identified as non auto-toxicity of the potato plant, including n-nonane, n-propyl propionate, capryl aldehyde, butylated hydroxytoluene, dimethyl1, 2-benzenedicarboxylate, 2,6-dimethylnonane, 2-octenal,2-undecental, 1-dodecene, 1-tridecanol, 1-pentadecen and 5-octadecylene. Although N, N-dimethyl-formamide was detected during both seedling and flowering stages, with the concentration being 0.445% and 0.669%, respectively, their role still await further investigation. |
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