Effects of low phosphorus stress on the growth and nutrient utilization efficiency of different Camellia oleifera clones

doi:10.3969/j.issn.1000-2006.2014.03.009

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (03): 45-49.doi: 10.3969/j.issn.1000-2006.2014.03.009

Effects of low phosphorus stress on the growth and nutrient utilization efficiency of different Camellia oleifera clones

CHEN Longsheng^1,2, CHEN Yongzhong^1,2*, YANG Xiaohu^1,2,TANG Langtao³, WANG Rui^1,2, WANG Xiangnan^1,2, PENG Shaofeng^1,2

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

Online:2014-05-15 Published:2014-05-15

Abstract

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.

CLC Number:

Q945.12
S718

CHEN Longsheng, CHEN Yongzhong, YANG Xiaohu,TANG Langtao, WANG Rui, WANG Xiangnan, PENG Shaofeng. Effects of low phosphorus stress on the growth and nutrient utilization efficiency of different Camellia oleifera clones[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2014, 38(03): 45-49.

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Effects of low phosphorus stress on the growth and nutrient utilization efficiency of different Camellia oleifera clones

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