Comparative studies on the contents of some inorganic constituents in the leaves within cultivars and among sexuality in spinach (Spinacia oleracea L.)
1996
Okuse, I. (Hirosaki Univ., Aomori (Japan). Faculty of Agriculture) | Saga, K.
An investigation was conducted on the differences of some inorganic constituent contents in leaves within cultivars and among sexuality in spinach plants (Spinacia oleracea L.). Results obtained can be summarized as follows: 1) The dry matter contents within cultivars were obtained 7.26-13.4% for male, 6.85-10.7% for female. 2) The total nitrogen contents within cultivars were obtained 5.33-6.09% for male, 5.00-5.65% for female. 3) The phosphorus contents within cultivars were obtained 0.194-0.294% for male, 0.35-0.413% for female, and The contents was heigher for female than for male. 4) The potassium contents within cultivars were obtained 7.19-11.7% for male, 6.65-10.7% for female. 5) The calcium contents within cultivars were obtained 0.420-0.840% for male, 0.386-0.808% for female. 6) The magnesium contents within cultivars were 0.800-1.17% for male, 0900-1.30% for female, and heigher for female than the male in the same as phosphorus. 7) The iron contents within cultivars were obtained 182-212 ppm for male, 172-204 ppm for female, and the manganese contents were 10.4-20.9 ppm for male, 8.03-18.4 ppm for female. 8) The contents of inorganic constituents tested within cultivars were classified into three groups by the degree of difference, namely narrow as total nitrogen and iron, medium as phosphorus, potassium and magnesium, broad as calcium and manganese. 9) The male leaves had heigher contents in the most constituents tested but lower in the contents at phosphorus and magnesium, suggesting that there are metabolic differences mediated the two elements among male and female plants. 10) The above findings were very useful not only for the production but also for understanding on the physiological differences of sexuality in spinach plants
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