297
kg). Generally, six-row barley genotypes had lower magnesium content compared
to two-row barley varieties. Actually, the magnesium content in six-row barley genotypes was lower from the mean data for all tested genotypes. The mean value of
magnesium for all tested barley cultivars was 383.92 mg/kg, and the coefficient of
variation was very small (0.01).
Aluminum (Al) is an element affecting the growth and grain yield of many crop
plants. Yet, some plants are able to accumulate high levels of aluminum. It is considered to be phytotoxic to the majority of plants if the soil pH decreases below 5.5
(Delhaize and Ryan 1995). In this paper, Al concentration ranges from 2.48 mg/kg
in Liliana cultivar to 9.01 mg/kg in Macedonian variety Hit. The mean value for
aluminum content for all tested varieties was 4.30 mg/kg, and the coefficient of
variation was 2.43%. According to LSD value, all genotypes were belonging in different groups, marked with different alpha/beta character, except the following varieties: NS 565 and Univers; Lardeya, GK Stramm, and GK Judy cultivars; Imeon and
Sajra (both are Bulgarian varieties with two-row spike); and Asparuh and Odisej
cultivars which have two-row spike morphology and Bulgarian origin.
Phosphorus (P) is an essential macroelement for the general health and vigor of
all plants. This nutrient is noted especially for its role in capturing and converting
the sun’s energy into useful plant components. Some specific growth factors that
have been associated with phosphorus are stimulated root development, increased
stem strength, improved flower formation and seed production, improvements in
crop quality, and increased resistance to plant diseases. Phosphorus is also concentrated in the embryo and outer layer of the grain, where it is largely present as phytate. All tested barley varieties significantly differ in phosphorus content except Hit
variety and GK Judy, which belong in the same group and didn’t differ between
them. NS 589 had the highest concentration of phosphorus (979.0 mg/kg), followed
by Line 2 (912.5 mg/kg). The average value for phosphorus content in all tested
barley varieties was 772.8 mg/kg with small coefficient of variation (0.15%). The
lower content of phosphorus showed six-row barley genotypes (Somborac,
682.0 mg/kg; Javor, 652.0 mg/kg; Liliana, 547.0 mg/kg; and Univers, 514.5 mg/kg).
Similar results were presented by Bleidere and Grunte (2008). Those researches
examined barley varieties with different origin about chemical composition. The
results from their study showed that the content of phosphorus was lower (3.73 g/
kg) in six-row barley genotypes compared to two-row (from 3.83 to 5.17 g/kg).
From the other side, Bleidere and Grunte (2008) obtained more higher values for
phosphorus content compared to results from our research.
Calcium (Ca) is one of the most important macronutrients in plants, with concentration in the shoot ranging from 0.1% to over 5% of dry matter (Marschner 1995).
Calcium has dual function, as a structural component of cell walls and membranes
and as intracellular second messenger. In our paper, Petra variety has the highest
calcium content (181.65 mg/kg), followed by NS 589 (161.65 mg/kg). Generally,
Bulgarian varieties had lower calcium content, and the lowest was recorded in
Asparuh cultivar (68.50 mg/kg). In this case, six-row barley varieties showed higher
values for calcium content, compared to those who had two-row spike. Also, the
content of calcium in six-row barley varieties was higher than the mean data for this
10 Chemometric Determination of Macro- and Microelements in Barley Genotypes…
kg). Generally, six-row barley genotypes had lower magnesium content compared
to two-row barley varieties. Actually, the magnesium content in six-row barley genotypes was lower from the mean data for all tested genotypes. The mean value of
magnesium for all tested barley cultivars was 383.92 mg/kg, and the coefficient of
variation was very small (0.01).
Aluminum (Al) is an element affecting the growth and grain yield of many crop
plants. Yet, some plants are able to accumulate high levels of aluminum. It is considered to be phytotoxic to the majority of plants if the soil pH decreases below 5.5
(Delhaize and Ryan 1995). In this paper, Al concentration ranges from 2.48 mg/kg
in Liliana cultivar to 9.01 mg/kg in Macedonian variety Hit. The mean value for
aluminum content for all tested varieties was 4.30 mg/kg, and the coefficient of
variation was 2.43%. According to LSD value, all genotypes were belonging in different groups, marked with different alpha/beta character, except the following varieties: NS 565 and Univers; Lardeya, GK Stramm, and GK Judy cultivars; Imeon and
Sajra (both are Bulgarian varieties with two-row spike); and Asparuh and Odisej
cultivars which have two-row spike morphology and Bulgarian origin.
Phosphorus (P) is an essential macroelement for the general health and vigor of
all plants. This nutrient is noted especially for its role in capturing and converting
the sun’s energy into useful plant components. Some specific growth factors that
have been associated with phosphorus are stimulated root development, increased
stem strength, improved flower formation and seed production, improvements in
crop quality, and increased resistance to plant diseases. Phosphorus is also concentrated in the embryo and outer layer of the grain, where it is largely present as phytate. All tested barley varieties significantly differ in phosphorus content except Hit
variety and GK Judy, which belong in the same group and didn’t differ between
them. NS 589 had the highest concentration of phosphorus (979.0 mg/kg), followed
by Line 2 (912.5 mg/kg). The average value for phosphorus content in all tested
barley varieties was 772.8 mg/kg with small coefficient of variation (0.15%). The
lower content of phosphorus showed six-row barley genotypes (Somborac,
682.0 mg/kg; Javor, 652.0 mg/kg; Liliana, 547.0 mg/kg; and Univers, 514.5 mg/kg).
Similar results were presented by Bleidere and Grunte (2008). Those researches
examined barley varieties with different origin about chemical composition. The
results from their study showed that the content of phosphorus was lower (3.73 g/
kg) in six-row barley genotypes compared to two-row (from 3.83 to 5.17 g/kg).
From the other side, Bleidere and Grunte (2008) obtained more higher values for
phosphorus content compared to results from our research.
Calcium (Ca) is one of the most important macronutrients in plants, with concentration in the shoot ranging from 0.1% to over 5% of dry matter (Marschner 1995).
Calcium has dual function, as a structural component of cell walls and membranes
and as intracellular second messenger. In our paper, Petra variety has the highest
calcium content (181.65 mg/kg), followed by NS 589 (161.65 mg/kg). Generally,
Bulgarian varieties had lower calcium content, and the lowest was recorded in
Asparuh cultivar (68.50 mg/kg). In this case, six-row barley varieties showed higher
values for calcium content, compared to those who had two-row spike. Also, the
content of calcium in six-row barley varieties was higher than the mean data for this
10 Chemometric Determination of Macro- and Microelements in Barley Genotypes…