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PECULIARITIES OF EXPRESSION OF VALUABLE ECONOMIC TRAITS IN INTRODUCED OAT MATERIAL IN THE WESTERN FOREST-STEPPE OF UKRAINE

PECULIARITIES OF EXPRESSION OF VALUABLE ECONOMIC TRAITS IN INTRODUCED OAT MATERIAL IN THE WESTERN FOREST-STEPPE OF UKRAINE

Institution

Institute of Agriculture of Carpathian region of NAAS Ukraine,

Section

INTRODUCTION

Abstract

Goal. The aim of our investigation was to study introduced accessions of different eco-geographical origin, to determine their vegetative periods, to evaluate their resistance to lodging, and diseases, and to find sources of valuable traits in terms of performance elements.

Results and Discussion. Seventeen accessions of different eco-geographical origin were investigated in 2010-2012. All the test accessions belonged to hexaploid species Avena sativa L. These accessions originated 4 countries, namely: Poland, Belarus, Latvia and Russia. Evaluation of productivity showed that the collection variety accessions gave grain yields  from 2.89 t/ha to 5.72 t/ha in the conditions of the Western Forest-Steppe of Ukraine. A variety of Polish origin, ‘Jawor’, was the most high-yielding and 19 % exceeded the standard variety ‘Chernihivsky 27’ by 19 %. The grain yields of three Polish accessions, ‘Deresz’, ‘Rajtar’, and ‘Budrys’; of one Belorussian accession, ‘ Zolak'; and of one Latvian accession, ‘Stendska Darta’ were close to the standard: from 101.1% to 109.7 %.Gain content in a panicle strongly depends on duration of the ‘sprouting-paniculation’ period, when intensive processes of development of reproductive organs proceed, and heavy precipitation prolongs this period and increases the grain number per panicle. We observed considerable variations in this parameter, depending on genotypes of accessions - from 56.1 to 88.7 kernels. Oat accessions ‘Deresz’, ‘Cwal’, and ‘Bohun’ had greater grain numbers per panicle – 88.3, 83.0, 88.7, respectively. Oat accessions ‘Jawor’, ‘Deresz’, ‘Hetman’, ‘Cwa’l, ‘Bohun’, and ‘Mutika 1077’ had larger grain weight per panicle (more than 2.5 g), moreover, the yield capacity of the first three accessions exceeded the standard. Accession ‘Mutika 1077’ had a greater 1000-grain weight of 42.4 g, and can be recommended as a source of valuable economic traits. Analysis the study results suggest that varieties of Polish origin are more suitable in our conditions and can be used as starting material in breeding for increasing in productive and adaptive potentials.

Conclusions. The selected sources of high grain weight per panicle (> 2.5 g), high grain number per panicle (61-90 kernels) and high 1000-grain weight (> 40.0 g) are recommended to introduce in breeding programs of of the Laboratory of Breeding of Cereals and Fodder Crops of the Institute of Agriculture of Carpathian Region of NAAS.

Keywords

oat, accession, productivity, resistance, sources of valuable traits