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TRAIT COLLECTION OF RICE BY RESISTANCE TO RICE BLAST

Article language

Українська, Русский, English

Print date

13.06.2019

Date posted online

10.10.2019

Institution

Institute of Rice NAAS

Bibliography

  1. Lyakhovkin AG. 2005. Rice. World production and gene pool. St-Petersburg: Profinform; 287 p.

  2.  Dudchenko VV, Petkevych ZZ, Shpak TN, Palamarchuk DP, Voroniuk ZS, Dudchenko TV. 2013. Identification of Asian rice crop characteristics (classifier-directory).

  3. Kherson, self-employed person Hrin DS: 128 p.

  4. Dudchenko VV. 2004. Biological justification of a system of protective measures against rice blast in the southern steppe of Ukraine: thesis for the Academic Degree of Candidate of Agricultural Sciences: specialty 06.01.11. National Agrarian University, Kyiv; 2004. 162 p.

  5. Tikhonova NA. 1988. Methodological instructions on diagnostics, measurement and assessment of rice blast harmfulness. Moscow; 40 p.

  6. Kovalenko YeD. Methodological instructions on the evaluation of resistance of rice varieties to diseases. Moscow; 1988. 30 p.

  7. Dudchenko TV. 2017. Ecological justification of control of harmful organisms on rice crops in Ukraine: thesis for the Academic Degree of Doctor of Agricultural Sciences: specialty 03.00.16. Institute of Plant Protection NAAS, Kyiv; 403 p.

  8. Methods of expert evaluation of varieties for distinctness, homogeneity and stability (DHS) (grain legumes and groat crops). 2016. Kyiv; p. 160-180.

  9. Regulations on the registration of collections of plant gene pool accessions with the National Center for Plant Genetic Resources of Ukraine. 2012. Kharkiv; 24 p.

Section

COLLECTION FORMATION AND USE

Abstract

Aim. To study the genetic diversity of rice in terms of resistance to disease, to find sources of resistance, to select reference varieties and to form a trait collection of rice accessions with resistance to Pyricularia oryzae Cav.

Results and Discussion. The study was carried out in an infectious-provocative nursery in the field and greenhouse of the Institute of Rice in compliance with the methodical guidelines in 2003 – 2016. In of the south Ukrainian, Pyricularia oryzea is the most harmful for rice. The article presents the results on forming a trait collection studying rice accessions. It presents the results of 7-year studies (2010 – 2016) on the search for sources for resistance to the pathogen among 190 rice accessions of different eco-geographical origin. In the years with various meteorological conditions and various development of disease, we revealed several sources of resistance to the pathogen. There were 64 disease-resistant accessions (33,7 %). Most of the accessions under investigation were medium-resistant to Pyricularia oryzae (50,5%). In the period of 2003 – 2004 and 2007 – 2009, 58 rice accessions were studied on artificial infection. In the greenhouse, 19 (33,7%) resistant accessions were found. Most of the accessions under investigation were susceptible (46,6%) and medium-resistant to Pyricularia oryzae (20,7 %).

Conclusions. The trait collection comprising 58 accessions belonging to 13 varieties from 8 foreign countries has been formed. Reference varieties and sources of resistance to disease in combination with a set of economic features were defined. These accessions are of great interest to breeding for valuable agronomic traits as they combine resistance to disease with several economically valuable characteristics. The collection is of great importance for achieving different scientific and breeding objectives. All the valuable material will be transferred for introduction in breeding.

Keywords

rice, resistance, rice blast, Pyricularia oryzae Cav., susceptibiliity, reference varieties, source, pathogen