文献类型： 外文期刊

第一作者： Lu, ZG

作者： Lu, ZG;Grewal, HS;Graham, RD

作者机构：

期刊名称：JOURNAL OF PLANT NUTRITION （ 影响因子：1.707； 五年影响因子：1.645 ）

ISSN： 0190-4167

年卷期： 1998 年 21 卷 1 期

页码：

收录情况： SCI

摘要： The effects of varied supply of zinc (Zn) (0, 0.1, 0.2, 1.0, and 10 mg Zn kg(-1) soil) and phosphorus (P) (low P: 50 mg P kg(-1) soil and high P: 150 mg P kg(-1) soil) on vegetative growth, plant tissue Zn and P concentration and their uptake were studied in six weeks old plants of two oilseed rape (Brassica napus) genotypes (92-13, a traditional genotype from China high in both erucic acid and glucosinolate, and Xinza-2, a hybrid from China low in erucic acid and glucosinolate) grown in Laffer sand (low in Zn and P) under controlled environmental conditions. Two oilseed rape genotypes had a differential response to Zn application. Xinxa 2 responded significantly for shoot and root dry matter only up to 0.1 mg applied Zn kg(-1) soil, while 92-13 responded up to 0.2 mg Zn kg(-1) soil. Zinc at 10 mg kg(-1) soil slightly reduced shoot dry matter and drastically reduced root dry matter of both the genotypes. Shoot and root dry matter production at 0, 0.1, 0.2, and 1 mg Zn kg(-1) soil were significantly greater under high P supply compared with low P supply. High P supply did not accentuate Zn deficiency symptoms compared with low P supply even at nil Zn. Phosphorus concentration in plant parts was significantly higher at nil Zn compared with Zn application. An increase in P supply had a non-significant effect on Zn concentration, but significantly increased the P concentration and P uptake in shoots. The results suggest that an increased supply of P at lower rates of Zn application was not detrimental for early vegetative growth and 2n uptake of two oilseed rape genotypes.

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