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| Titel: |
Dry matter production and uptake of zinc and phosphorus in two oilseed rape genotypes under differential rates of zinc and phosphorus supply |
| Auteur: |
Lu, Zhonggui Grewal, Harsharn Singh Graham, Robin D. |
| Verschenen in: |
Journal of plant nutrition |
| Paginering: | Jaargang 21 (1998) nr. 1 pagina's 25-38 |
| Jaar: |
1998-01 |
| Inhoud: |
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 Zn uptake of two oilseed rape genotypes. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 18 gevonden artikelen
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