补锌对靠接枳砧的缺锌纽荷尔脐橙锌营养吸收的影响
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国家自然科学基金项目(34114098); 国家重点研发计划项目(2017YFD0202001); 云南省邓秀新院士工作站合作协议;云南省科技厅项目(2018IB013)


Effects of zinc resupply on zinc nutrient absorption of zinc deficient Newhall navel orange inarched with trifoliate orange
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    摘要:

    为研究补锌对靠接枳砧的缺锌纽荷尔脐橙生长及锌营养吸收的影响,以已经缺锌12个月的枳橙砧纽荷尔脐橙(N/C)、靠接枳砧的纽荷尔脐橙(N/Ct)为试材,采用砂培法对缺锌苗木进行缺锌(0.001 mg/L)和补锌(0.05 mg/L)处理5个月。结果显示:无论补锌还是缺锌,靠接苗木新叶和接穗茎的干质量与未靠接苗木相比有所增加;在缺锌条件下,靠接枳砧未能增加苗木叶中的锌含量和锌累积量;在补锌条件下,靠接苗木叶和根的锌含量显著高于未靠接苗木,其新叶的锌累积量显著高于未靠接苗木;补锌明显增加靠接苗木叶的锌含量和累积量,仅显著增加未靠接苗木新叶的锌累积量;在缺锌条件下,靠接苗木新叶的钾含量显著高于未靠接苗木,其原始砧木根中的钙含量显著高于未靠接苗木。在补锌条件下,2种苗木新叶对钾的吸收无显著性差异,靠接苗木新叶的钙含量显著低于未靠接苗木,但2种苗木原始砧木根的钙含量无显著性差异。补锌使2种苗木新叶和根对硼的吸收明显减少。

    Abstract:

    Trifoliate orange and Carrizo citrange are two rootstocks with different zinc (Zn) absorption potential.Newhall navel oranges (N)/Carrizo citrange orange (C,Citrus sinensis Osb.×Poncirus trifoliata Raf.) grafted seedlings (N/C) and N/C inarched with trifoliate orange (P.trifoliata (L.) Raf.,N/Ct) cultivated in Zn deficient condition for 12 months before treatments,and then resupplied with 0.001 mg/L (deficient,control) and 0.05 mg/L (Zn resupply,adequate) Zn in sand culture for 5 months were used to study the effects of Zn resupply on the growth and Zn nutrient absorption of Zn deficient Newhall navel orange inarched with trifoliate orange.The results showed that the dry weight of new leaves and scion stems of inarched plants was higher than that of noninarched plants either with Zn resupply or Zn deficient treatment.The Zn concentration and content of leaves were not higher in the inarched plants compared with the noninarched plants under Zn deficient condition.However,the Zn concentration of the old leaves and roots of inarched plants was significantly higher than that of the noninarched plants,and the Zn accumulation of new leaves of inarched plants was significantly higher than that of noninarched plants under Zn resupply condition.Zn resupply significantly increased the Zn concentration and content of inarched plants,and significantly increased the Zn content of noninarched plants.The potassium concentration in new leaves of inarched plants was significantly higher than that of the noninarched plants,and the calcium concentration in the roots of the original rootstock was significantly higher than that of the noninarched plants under Zn deficient condition.The potassium concentration of the new leaves was not significantly different between inarched plants and noninarched plants under Zn resupply condition.The calcium concentration of the new leaves of inarched plants was significantly lower than that of noninarched plants,but there was no significant difference in the calcium concentration of the original rootstocks between inarched plants and noninarched plants.Zn resupply significantly reduced the boron concentration in the new leaves and roots of the plants.

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李若男,杜威,伍小萌,刘永忠,潘志勇,彭抒昂.补锌对靠接枳砧的缺锌纽荷尔脐橙锌营养吸收的影响[J].华中农业大学学报,2019,38(6):-76

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  • 收稿日期:2019-06-14
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  • 在线发布日期: 2019-11-12
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