Effects of Different Phosphorus-applying Levels on Seedling Growth and Camptothecin Accumulation in <i>Camptotheca acuminata</i> Seedlings

YANG Lang-sheng; PU Qing-yu; JIAN Kai

doi:10.16779/j.cnki.1003-5508.2015.02.022

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Volume 36 Issue 2

Nov. 2019

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Article Navigation > Journal of Sichuan Forestry Science and Technology > 2015 > 36(2): 98-101,14

YANG Lang-sheng, PU Qing-yu, JIAN Kai. Effects of Different Phosphorus-applying Levels on Seedling Growth and Camptothecin Accumulation in Camptotheca acuminata Seedlings[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(2): 98-101,14. doi: 10.16779/j.cnki.1003-5508.2015.02.022

Citation:

YANG Lang-sheng, PU Qing-yu, JIAN Kai. Effects of Different Phosphorus-applying Levels on Seedling Growth and Camptothecin Accumulation in Camptotheca acuminata Seedlings[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(2): 98-101,14. doi: 10.16779/j.cnki.1003-5508.2015.02.022

Effects of Different Phosphorus-applying Levels on Seedling Growth and Camptothecin Accumulation in Camptotheca acuminata Seedlings

doi: 10.16779/j.cnki.1003-5508.2015.02.022

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Sichuan Agriculture University, Wenjiang 611130, China

Received Date: 2015-01-06

Abstract

A potted experiment with controlled fertilization supply was conducted to study the effects of different phosphorus-applying levels (P₀, 0 kg P·hm^-2; P_L, 42 kg P·hm^-2; P_M, 84 kg P·hm^-2; P_H, 168 kg P·hm^-2) on the growth of seedlings and camptothecin (CPT) accumulation in C. acuminata seedlings. The experiment results showed that the height and dry weight of C. acuminata seedlings would increase when phosphorus-applying level increased. Under different levels of applying phosphorus, the dry weight of leaf, shoot and root of C. acuminata seedlings was significantly different (p < 0.05). The CPT content in leaf, shoot and root reached the highest level when phosphorus-applying level was P L. Compared with P₀, the CPT content in P_L increased significantly. The CPT amount in the whole seedling, leaf and shoot of C. acuminata increased gradually with the increase of phosphorus. But when phosphorus-applying level was higher than P_M, the increase of CPT amount was insignificant. The CPT amount in root reached the highest level when phosphorus-applying level was P_M. According to the results studied, proper deficient phosphorus stress could significantly enhance CPT content in C. acuminata seedlings. With a main objective to establish a C. acuminata seedling plantation for producing CPT, proper phosphorus level was P_M. CPT amount in seedlings was mainly decided by the accumulation of biomass of C. acuminata.
- Phosphorus fertilization;
- Camptotheca acuminata;
- Camptothecin;
- Content;
- Accumulation
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Effects of Different Phosphorus-applying Levels on Seedling Growth and Camptothecin Accumulation in Camptotheca acuminata Seedlings

doi: 10.16779/j.cnki.1003-5508.2015.02.022

Sichuan Agriculture University, Wenjiang 611130, China

Received Date: 2015-01-06

Key words:

Abstract: A potted experiment with controlled fertilization supply was conducted to study the effects of different phosphorus-applying levels (P₀, 0 kg P·hm^-2; P_L, 42 kg P·hm^-2; P_M, 84 kg P·hm^-2; P_H, 168 kg P·hm^-2) on the growth of seedlings and camptothecin (CPT) accumulation in C. acuminata seedlings. The experiment results showed that the height and dry weight of C. acuminata seedlings would increase when phosphorus-applying level increased. Under different levels of applying phosphorus, the dry weight of leaf, shoot and root of C. acuminata seedlings was significantly different (p < 0.05). The CPT content in leaf, shoot and root reached the highest level when phosphorus-applying level was P L. Compared with P₀, the CPT content in P_L increased significantly. The CPT amount in the whole seedling, leaf and shoot of C. acuminata increased gradually with the increase of phosphorus. But when phosphorus-applying level was higher than P_M, the increase of CPT amount was insignificant. The CPT amount in root reached the highest level when phosphorus-applying level was P_M. According to the results studied, proper deficient phosphorus stress could significantly enhance CPT content in C. acuminata seedlings. With a main objective to establish a C. acuminata seedling plantation for producing CPT, proper phosphorus level was P_M. CPT amount in seedlings was mainly decided by the accumulation of biomass of C. acuminata.