Evaluation of fibre flax varieties by quality uniformity of long fiber when processing flax straw
When processing flax straw of fiber flax varieties of different selection and quality under production conditions of flax-cultivating and flax-processing enterprises of the Russian Federation, one of the important properties characterizing technological value of fibrous products is quality uniformity of long fiber It was established that the range of data variation is 2 numbers and practically does not depend on the quality of flax straw when comparing average number of long fiber obtained from entire set of flax straw batches of the studied fiber flax varieties. The number variability of long fiber was expressed by variation coefficient of 5.3-5.9%. The analysis carried out on uniformity trait of long fiber number for each variety along entire flax straw quality assessment scale allowed to identify varieties with “absolute" and “high" uniformity. Varieties with “absolute" uniformity include those varieties which havevariation coefficient (V) equal to 0; “high" uniformity - varieties for which variation coefficient did not exceed 2.0% in the number of long fiber. Among the first group, there were mainly varieties of domestic selection, such as: Universal, Aleksandrit, A 93, A 29, Tomskiy 18, Lenok, Caesar, Surskiy, as well as Dashkovskiy variety of Belarusian selection (flax straw numbers 0.50; 0.75; 1.00,1.50,1.75,2.00). The possibility of obtaining long fiber with a “high" uniformity was recorded among flax straw of 1.25; 1.50; 2.50 numbers of such varieties as Mogilevskiy 2, Agata, Escalina, Lira, Sofia (foreign selection) Caesar, Alexandrit, Leader, Impulse, Lenok, Tost, Tomskiy 18 (varieties of domestic origin).