Influence of the Coleoptile’s Length and Sowing Depth on Spring Tritical Productivity

Abstract

Now triticale is referred to as a crop that is able to solve the problem of stabilizing the gross yield of cultivated feed and food grains around the world. Spring triticale in the Chuvash Republic is not cultivated in a small area and breeding for this crop is not conducted. The introduction of spring triticale in production is possible only when creating varieties that meet the soil and climatic conditions of the country. This problem can be solved only by selecting and creating the initial breeding material. The source material must be studied comprehensively. One of the important indicators in the evaluation of the source material may be the length of a coleoptile. The purpose of the research is to determine the influence of the length of the coleoptile and the depth of sowing of seeds on the yield of the source material of spring triticale. Presented studies conducted in 2017-2018. The varieties Ulyana, Rovnya, Khaykar, Saur and breeding lines 15-11-2, 15-48-11, 15-65-29 were evaluated. The short coleoptile had Rovnya and 15-11-2 line, the middle coleoptile had Ulyana, Saur and 15-65-29 line, the long coleoptile Khaykar and 15-48-11 line. The longest coleoptile was in 15-48-11 line, and the shortest - in 15-11-2 line. For forms with a short coleoptile with increasing sowing depth, field germination, plant safety, number of productive stems, productive bushiness, grain weight per spike, number of grains per spike, grain yield are significantly reduced. Their maximum manifestation in forms with an average coleoptile was found at a seeding depth of 5 cm. For forms with a long coleoptile, the seeding depth does not significantly affect the value of these indicators. For all the studied parameters with an increase in the depth of sowing, their dependence on the length of the coleoptile increases. High correlation is observed in field germination, plant safety, the number of productive stems, the mass of 1000 grains and yield.