אסיף מאגר המחקר החקלאי

Uptake and distribution of mineral nutrients in muskmelon seedlings under nitrogen and phosphorus stresses and during recovery

Year:

1988

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Volume :

112

Co-Authors:

Nerson, H., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa, 31999, Israel
Edelstein, M., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa, 31999, Israel
Angemar, Y., Department of Vegetable Crops, Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa, 31999, Israel

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Abstract:

Muskmelon seedlings were grown hydroponically in a greenhouse and starved of nitrogen and/or phosphorus for 4 weeks. They were then transferred to an optimal N and P regime or to the opposite stress for an additional 3-week period. Nitrogen stress reduced markedly N, Ca, and chlorophyll contents of leaves and stems, but increased P content. Phosphorus stress reduced significantly P and K concentrations in stems and leaves but did not affect markedly chlorophyll content and did not result in N accumulation. Both stresses reduced significantly the area of the first leaf mainly by adversely affecting cell division. Repair of N and P concentrations in deficient seedlings by transfer to the optimal nutrition regime was more rapid in N- than in P-stressed seedlings. © 1988 Kluwer Academic Publishers.

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