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Abstract
The article presents the results of the analysis of salt tolerance in rice samples by the laboratory methods at a concentration of NaCl – 1,5 %. The plants were grown in an incubator at temperature 26 °C. After 15 days, we measured the length of roots and shoots; the germination of seeds was counted. For the analysis of hybrids sensitive to salt Krasnodar varieties Novator with lines IR 52713-2B-8-2B-1-2, IR 74099-3R-3-3, NSIC Rc 106 – donor locus salt tolerance Saltol, using markers RM 493 and RM 7075. 90 plants were selected from the F2 plants which are analyzed by PCR, and the results of DNA analysis identified 6 of them as salt tolerant samples homozygous for the desired locus. From their offspring was selected the promising form to create salt-tolerant rice sorts.
Highlights
Rice is the most important food crop for more than half of the world population
Results of research At the study of two Indian donors of the salt tolerance NSIC Rc 106 and FL 478 comparing with Krasnodar sort Novator and Rostov sorts Kuboyar, Svetly, Magnat, Boyarin, Yujanin and with the collection sample of Chili 45-1-1 were established the significant differences in the length of roots and sprouts that varied on sorts and experiment variants (Table 1)
Among the studied sorts the maximal sprout length in the salt solution was in sorts Boyarin (7,33 cm) and Svetly (7,06 cm)
Summary
Rice is the most important food crop for more than half of the world population. Million of hectares in the humid districts of Asia and other continents are technically suitable for the rice production but still untreated or give the very low seed harvests because of salt and problem soils. The fifth part of irrigable soils in the world suffers from the unfavorable influence of high salinity of soil and from the problems of salination [1]. The soil salination significantly limits the productivity of cultivated rice. In Russian Federation rice is cultivated on an area near 200 thousands of hectares. Near 80 thousands of hectares of the rice fields on South of Russia are incurred to salination to some extent [2]
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