Page 165 - Zbornik_Konf_2019

https://doi.org/10.15414/2019.9788055220703

4 International Scientific Conference Abstracts Book
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COLLECTION OF SAMPLES OF ORYZA SATIVA L. AS A SOURCE OF VALUABLE TRAITS IN
BREEDING FOR PRODUCTIVITY AND ADAPTABILITY
Vladimir Dudchenko, Zoya Petkevich, Dmitriy Shpak, Dmitriy Palamarchuk

Institute of Rice of National Academy of Agrarian Sciences of Ukraine, Antonivka, Ukraine;
E-mail: petkevichzoya@gmail.com
Rice is one of the staple crops worldwide. In Ukraine, rice is cultivated in the most
northern zone of rice growing. Introduction of valuable rice cultivars and varieties via
exchange scientific collaboration is a crucial branch of work at the Institute of Rice. The
collection encompasses 789 rice samples that come from 30 countries. It not only reflects
genetic diversity of Oryza sativa L. but is also valuable for research and education as it
contains sources and donors of traits determining yield and its components, plant
development rate, resistance to unfavorable factors and product quality. On the basis of
samples from this collection, the following varieties were created and included in the State
Register of Plant Varieties Suitable for Dissemination in Ukraine: Premium, Vikont, Marshal,
Lazurit, Korsar. In turn, Konsul, Fagot, Galeon, Zenit from 8 to 10 t/ha cultivars have been
undergoing evaluation by state scientific expert since 2016.
The aim of this research was to study productivity and adaptability of the collection of
samples of rice in order to identify the most valuable ones for further breeding.
Characterization of rice samples imported in 2016–2018 that are outstanding in terms of
yield and its components under both favorable and unfavorable weather conditions was
performed. 27 studied rice samples originated from multiple countries (Kyrgyzstan,
Uzbekistan, Spain, Italy, France, Egypt, China, India, the U.S.A., the Philippines) entailed early-
ripening from 110 to 115 days, mid-season from120 to 125 days and late-ripening (>125
days) rice cultivars that belong to two subspecies: japonica and indica.
To select starting materials, duration of vegetation season of rice samples from different
eco-geographical groups (European, African, Latin American, Eastern, Filipino, South Asian)
was analyzed and determined to be in the following ranges: from 102 to 130 days, from 146
to 155 days and from 122 to 140 days for the European, African and Latin American groups,
respectively. Rice samples were sorted in clusters depending on the level of productivity and
its components. 4 early-ripening, 8 mid-ripening and 15 late-ripening varieties that possess
the most valuable breeding and economic features were selected. In particular, Iskander,
Hultahon, TR 556-7-1-1, TR 653-1-2-2-1, JR 67411-174-2-2 – on the basis of five traits; Long
Dao 5, Long Zing 31, Long Zing 33, TR 787-10-1, Giza 181, Baldo, Volano, Lotto – on the basis
of four traits. These samples combine high productivity of panicle from 3.0 to 4.9 g with high
grain number per panicle from 130 to 155 and high of whole rice kernels from 85 to 94 %.
Recently, studies on the productivity potential of rice genotypes under conditions of
drip irrigation have commenced. Furthermore, domestic rice varieties that can yield up to
11.9–13.4 t/ha have already been determined – Konsul and Fagot. Consequently, conducted
research enabled identification of sources and donors of complex traits, which can be used for
the development of new rice cultivars with high yield capacity as well as grain and grit
quality.

Keywords: rice, sample, trait, high yield, grain quality, plant breeding.
Acknowledgments
This work was supported by the Programme Research and Development of the Institute of Rice of the
National Academy of Sciences of Ukraine.

4 International Scientific Conference Agrobiodiversity Nutrition, Health and Quality of Human and Bees Life |165
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September 11–13, 2019