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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (31): 58-63.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

磷胁迫对不同油茶优良无性系Apase活性的影响

陈隆升 陈永忠 王瑞 马力 彭邵锋 王湘南 唐炜   

  • 收稿日期:2011-06-22 修回日期:2011-08-03 出版日期:2011-12-05 发布日期:2011-12-05
  • 基金资助:

    国家林业局公益类行业专项油茶“两系”杂交种子园营建及其高产培育技术研究（200804044）

The Effects of Phosphorus Deficiency Stress on Activities of Acid Phosphatase

PENG Shao-Feng   

  • Received:2011-06-22 Revised:2011-08-03 Online:2011-12-05 Published:2011-12-05

PDF (PC)

943

摘要：

为揭示磷素胁迫条件下油茶无性系Apase的变化规律和筛选磷高效利用型油茶无性系，本文通过沙培试验设计3种磷素处理水平（0、0.05、0.5 mmol/L），进行磷胁迫条件下不同油茶无性系Apase活性的比较研究。结果表明：低磷处理（P0、P1）根系分泌、根系和叶片APase活性均明显高于正常供磷处理（P2）；不同油茶无性系对磷缺乏的适应性存在明显差异，在低磷胁迫下，‘湘林81’、‘湘林4’根系分泌性Apase活性较强，表明其能较好利用土壤中的难溶性磷来适应低磷环境；‘湘林67’具有较高的根系和叶片Apase活性，表明其能有效地重复利用自身体内的有机磷来适应低磷环境。相关性分析表明根系APase活性与净光合速率存在较大的正相关性，叶片APase活性与净光合速率存在一定的正相关性。

关键词: 冬小麦, 冬小麦, 水资源, 丰歉度

Abstract:

In order to understand the P demands of Camellia oleifera Abel clones, acid phosphatase activity(APA) were studied in the leaves and roots of different potted clones under different levels of phosphorus addition .The potted Camellia oleifera Abel clones were subjected to three supply levels(0、0.05、0.5mmol/L). The results showed that the activities of APA secreted by roots, in the leaves and roots under the low P levels treatment(P0、P1) were higher than those under normal P treatment. (P2). There were significant differences in the abilities of the different Camellia oleifera Abel clones to adapt to low P levels. unde the P-defieiency, Acid phosphatase(APA) activity secreted by roots of XL81 and XL4 were higher than other clones, which means XL81 and XL4 can fine use P immobilizated in soil to adapt to low P levels. Acid phosphatase (APA) activity was much higher in leaves and roots of XL67 than that of other clones. It showed that XL67 made the organic P adapt to low P levels. By Correlation analysis, there was a big positive correlation between APase activity in root and net photosynthetic rate, and there was also positive correlation between APase activity in leaves and net photosynthetic rate.