ISSN:
1871-4528
Schlagwort(e):
fertilization
;
starch quality
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Summary The levels of starch phosphorylation in potato tubers were investigated in relation to fertilization with phosphorus (P) of field-grown and greenhouse-grown plants. The field-grown plants received 0, 15 or 30 kg P ha−1. Starch from plants grown without P-fertilizer contained 15.6 nmol P (mg starch)−1 whereas starch from plants grown with 30 kg P ha−1 contained 20.6 nmol P (mg starch)−1. The greenhouse-grown plants were cultured in inert media and received nutrient solutions containing 0, 3, 12 or 24 mg P l−1, respectively. Plants grown with no P-fertilizer produced tuber starch with phosphorylation levels reduced to approximately 30% of the level found in plants grown with an ample supply of P. Thus, the level of starch phosphorylation can be modified by limiting the P-supply through the root system. Application of foliar P-fertilizer to the greenhouse-grown plants had no significant effect on the phosphorylation of the tuber starch.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02358433
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