Open AccessInnovational system of quality control of seeding material in corn seed growing
Author(s) -
М. Ya. Kyrpa,
Oleh Stasiv,
Т. М. Lukianenko
Publication year - 2020
Publication title -
zernovì kulʹturi
Language(s) - English
Resource type - Journals
eISSN - 2706-5871
pISSN - 2523-4544
DOI - 10.31867/2523-4544/0131
Subject(s) - germination , sowing , seeding , hybrid , endosperm , seedling , agronomy , horticulture , biology , mathematics , botany
Results of quality investigations of corn hybrids seeds that are formed at the growing phases, postharvest processing and storage are expounded. Quality control system which is based on the acting (standardized) and additional indexes and also methods of their definition is worked out. Seeds viability on the cold germination method, energy and growth force, uniformity and damage are additional indexes, they have high correlation level with sowing qualities and plenteous hybrids properties. Cold germination method includes variable temperatures 8 – 10 and 18 – 20 degrees Celsius that reproduces conditions of “sowing – seedling” corn period in the field. The uniformity is determined by the method of separating seeding material and determination of some fractions content on seeds size 9, 8, 7, 6 mm in it. The damage is defined by looking-over seedlings through a magnifying glass and their separating into 3 groups: seeds which are not damaged, with macro- and micro- damage of germ and endosperm, also seeds with damage in the kind of plucked veil are separately distinguished. The largest level of additional indexes correlation determined by new methods is within r = 0,583 – 0.781 and refers to the field seeds germination, individual plant productivity of corn hybrids. On the base of acting and additional indexes conditioned seeds are offered to be evaluated in accordance with 3 indexes of sowing suitability. If seeds of the first and the second (high and medium) indexes are used marketable seeds of corn hybrids productivity can be increased on 15–18 %. The highest index seeds viability on the method of cold germination must be 85–100 %, quantity of strong plantlets – no less 81 %, uniformity – 91 % and more, content of seeds with macro damage – till 5 % and micro damage – till 29 %. The system of quality control is recommended to be used in the process of seeds preparation and on the phase of their certification. Key words: corn, hybrids, seeds, system of quality, indexes and methods.