Papers by Keyword: Cultivar

Abstract: The questions of the practical usage of the analytical scanning electron microscope JSM 600 LA by JEOL company (Japan) with EDS system – microanalysis were envisaged. This device was used to study the structure and elemental composition of the fruit ash received from 6 breeds of 3 plum species. Plum fruit are rich in mineral substances, the following order of substances accumulation is characteristic for them: K > P > Ca > Mg > Na ≈ S > Fe > Zn ≈ Cu > Mn ≈ Co > N i≈ Pb. In fruit pulp K is accumulated on 7 – 20 % more than in skin. The concentration of Ca, Cu, Fe, Ni, Zn and Pb in fruit skin is in 2 – 10 times higher than in pulp. The most of mineral substances is accumulated in the fruit of Prunus salicina L. plum specie. The significant correlations are determined between Ca and Mg (r 0.75) and Ca and Ni (r 0.71); the medium correlation is indicated between Ca and Cu (r 0.62) and Cu and Ni (r 0.55).

Abstract: Essential oil in four cultivars fruits of Amomum tsao-ko were extracted and determined by the method of gas chromatography (GC) and GC-coupled mass spectrometry (GC-MS). The essential oils content of 86.50%, 77.05%, 83.02% and 77.50% were achieved in the four cultivars of Ellipse, Fusiform, Spherical, and Conical A. tsao-ko fruits, respectively. The results showed that the identified major common components of the essential oil are 1,8-cineole, citral, α-terpineol, α-phellandrene, α-pinene, β-pinene, γ-terpinen, and nerolidol, the most abundant component is 1,8-cineole which accounts for about 36% in all four cultivars and it may be useful for industrial exploitation as well as chemotaxonomic characterization. The results also indicated that the four A. tsao-ko fruit cultivars belong to eucalyptol-rich type and the observed chemical variability between the studied species and cultivars seems to results from the gengtic variability.

Abstract: Cadmium (Cd) accumulation and distribution in rice plants were investigated with six rice cultivars under different soil Cd levels. The results showed that Cd accumulations in different organs were in the order: root » stem > leaf > grain. The magnitudes of the differences among rice organs in Cd accumulations were larger for soil Cd treatments than for the control. The magnitudes of the variations among rice cultivars in Cd accumulations were the largest in grains, followed by roots, and the smallest in stems and leaves, and these were also larger for soil Cd treatments than for the control. Cd absorbed by rice plants were mostly accumulated in roots (about 80% for the control and more than 90% for soil Cd treatments), and only a very small portion was transferred into grains (about 2% for the control and less than 1% for soil Cd treatments). The magnitudes of the variations among rice cultivars in Cd distributions were larger for soil Cd treatments than for the control.

Abstract: In order to study the variations among rice cultivars in cadmium (Cd) concentration abilities, pot soil experiments were conducted with six rice cultivars of different types at different soil Cd levels, i.e. 0.12 (the control), 5, 10 mg/kg. The results showed that there were great or obvious variations among the rice cultivars in Cd concentration abilities. But the magnitudes of the variations differed with soil Cd levels and plant organs. Generally, the magnitudes of the variations were larger for soil Cd treatment (5 and 10 mg/kg) than for the control. The magnitudes of the differences among the rice cultivars were higher in grains than in other plant organs. With regard to Cd concentrations in different organs of rice plant, they fell fast from root to grain. Bio-concentration factors (BCF) of Cd in rice plants were in the order: root > stem > leaf > grain. On the differences of soil Cd levels, BCF were in the order: the control > 5 mg/kg soil Cd treatment > 10 mg/kg soil Cd treatment.