Dry Matter Accumulation and Chemical Composition in Bulgarian Varieties of Lentil
I. Dry Matter Accumulation

T. K. TONEV1, M. I. MIHOV1, I. MITOVA2 and G. MILEV1

1 Institute of Wheat and Sunflower "Dobroudja", BG-9520 General Toshevo, Bulgaria
2 Institute of Soil Science and Agroecology "N. Poushkarov", BG-1336 Sofia, Bulgaria

Abstract

TONEV, T. K., M. I. MIHOV, I. MITOVA and G. MILEV, 1999. Dry matter accumulation and chemical composition in Bulgarian varieties of lentil. I. Dry matter accumulation. Bulg. J. Agric. Sci., 5: 827-833

The phenological peculiarities and dry matter accumulation in plant parts were studied in 8 Bulgarian lentil varieties and in the standard variety Tadjikskaya 95.
Phenological differences between the tested lentil varieties occured at the entering into the stages mass flowering and maturity. The agrometeorological conditions, however had a considerably stronger effect on the development of the crop than genotype specificity. The mean daily increase of dry matter accumulation was highest in the period from beginning till end of flowering and reached 11.27 g.m-2; it did not exceed 5.58 g.m-2 in the preceding period (germination beginning of flowering). The varieties Stella, Toundja and Mutant 17 MM had the highest rate of dry matter accumulation, and the cultivar Tadjikskaya 96 the lowest. The varieties Naslada, Stella and Nadejda stood out with their increased dry matter accumulation in the vegetation parts, while cv. Stanka 1, Toundja, Yanitsa and Mutant 17 MM have demonstrated a greater production potential than the standard Tadjikskaya 95. By their Harvest Index (HI), the tested varieties could be divided into the following groups: (1) with high HI Tadjikskaya 95, Mutant 17 MM, Stanka 1, Toundja and Yanitsa; (2) with moderate HI Stanka 2 and Stella; (3) with low HI Nadejda and Naslada.

Key words: lentil, Bulgarian varieties, plant development, dry matter