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低磷胁迫对不同油茶无性系幼苗生长及养分利用效率的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年03期
Page:
45-49
Column:
研究论文
publishdate:
2014-05-15

Article Info:/Info

Title:
Effects of low phosphorus stress on the growth and nutrient utilization efficiency of different Camellia oleifera clones
Article ID:
1000-2006(2014)03-0045-05
Author(s):
CHEN Longsheng12 CHEN Yongzhong12* YANG Xiaohu12TANG Langtao3 WANG Rui12 WANG Xiangnan12 PENG Shaofeng12
1.Hunan Academy of Forestry, Changsha 410004,China;
2.National Engineering Research Center for Oil-tea Camellia, Changsha 410004,China;
3.Forestry Bureau of Heshan Distric Yiyang city, Hunan Province, Yiyang 413000,China
Keywords:
Camellia oleifera Abel clones low phosphorus stress nutrient absorption and utilization efficiency
Classification number :
Q945.12; S718
DOI:
10.3969/j.issn.1000-2006.2014.03.009
Document Code:
A
Abstract:
A sand culture experiment with a split design was conducted to study the responses of seedlings of five Camellia oleifera clones under three levels of P stress(P0(0 mmol/L), P1(0.05 mmol/L), P2(0.5 mmol/L)). The results showed that five clones were significantly different in tolerance to low phosphorus stress. With low P stress exacerbating, the biomass and the N and P absorption of tested clones decreased, whereas the nutrient utilization efficiency increased. In low P and P deficiency treatments, the biomass and the P absorption and utilization efficiency of Xianglin67 and Xianglin69 were higher. Leaf(N/P)and leaf Δ(N/P)ratio were lower. There were better phosphorus nutrient recycling mechanism in Xianglin67 and Xianglin69.Those clones could be considered to be excellent low P stress resistant clones.

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Last Update: 2014-05-15