REGENERATIVE CROPS IN SEED PRODUCTION OF VEGETABLE PEAS PISUM SАTIVUM L.
The aim of the research. Restoration of lost sowing qualities of vegetable pea seeds to the indicators defined by the standard in mixed agrophytocynoses with spring barley. Methods. General scientific – analysis and generalization of scientific positions; planning – development of methods and technology of experiments; field – laying experiments, phenological observations, morphological description of plants; laboratory – conducting tests to determine the sowing qualities of seeds; variational-statistical – the establishment of patterns of variability and reliability of the results. Results. A generally recognized defect in the technology of vegetable pea seed production is its liana-like stem, which lies down during the period of biological maturity of the seed. This is facilitated by a fairly massive vegetative mass of the stem, and even rains, which often fall during the most important period – harvesting. The fallen stem, and with it the beans and seeds due to deadness, high humidity are affected by specific diseases and pests. The consequence of this phenomenon is the loss of seed condition, in particular its sowing qualities. Particularly irreparable losses occur in seed production, in its initial stages – in pre-primary, basic and elite seed production. According to accepted practice, seeds that have lost germination below 60% are rejected. Under the condition of seed production of newly created varieties, the seeds of which are few at these stages, there is a risk of complete loss of the variety. In solving this problem, it "saving" such seeds, and hence the new variety, we propose to use mixed crops of substandard vegetable pea seeds with spring barley. Barley serves in this case as a resistant crop. In the development of such technology, seeds with almost lost germination of vegetable varieties were used – early-ripening Salute DTR, medium-ripe Natinau, medium-late Stryzh and conditioned seeds of spring barley Helios. Conclusions. The proposed fairly simple technology to restore lost due to adverse weather conditions (there may be other reasons) the condition of vegetable pea seeds in mixed with barley spring agrophytocinosis, will be useful at different stages of seed production, if necessary. The effectiveness of this technology is evidenced by the results of analyzes conducted by the Nizhyn State Seed Inspection. According to the results of their implementation, the energy of seed germination of pea varieties Salute DTR, Stryzh and Natinau was – 87, 88, 88%, germination – 92, 93, 93%, humidity – 12,2, 12,4, 13,2%, physical seed purity was in the range of 99,0, 98,0, 99,0%, respectively. Seed quality complied with the norms of DSTU 7160: 2010 for seed categories – AS (additional seeds) and BS (basic seeds).The expediency of using this technology is also due to the fact that as a result of its use, in fact, was saved high-value and high-value source material of scarce domestic varieties of canned vegetables. According to the results of research, 0,088 tons of conditioned pea seeds of vegetable variety Salyut DTR, 0,750 tons of Natinau variety and 0,370 tons of Swift variety were obtained. Seed production of these varieties was continued.
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