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SummaryThis paper presents the results of investigation of three newly introduced Italian rice varieties Brio, Ellebi and Opale, in comparison with two standards Prima riska and R-76/6. The field experiment (randomised block system) was conducted during 2010 and 2011 under the agro-ecological conditions of Kocani region. The paddy rice yield, stem height, panicle length and number of productive tillers per m 2 were analysed. In both years of investigation, the paddy rice yield of the standard variety R-76/6 as well as the introduced Brio, Ellebi and Opale varieties was significantly lower compared with standard Prima riska variety. he stem height of the Italian rice varieties was significantly shorter in comparison with standard varieties, in both years of testing. In general, according to the results obtained in this investigation, the newly introduced varieties: Brio, Ellebi and Opale could be included in the rice breeding programmes, especially for breeding short stem rice varieties.

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This paper presents the results of head rice yield research of rice varieties and genotypes grown in the Republic of Macedonia, conducted within the period 2009-2014. In the research, in total sixteen rice varieties and five genotypes were included, among which were the following: three Macedonian varieties (Biser 2, Prima riska and Montesa), three introduced Italian varieties, the most widely used in Macedonian rice production (Monticelli, R-76/6 and San Andrea), five newly introduced Italian varieties (Bianca, Galileo, Brio, Ellebi and Opale), five newly introduced Turkish varieties (Kiziltan, Gala, Halilbey, Gönen and Pasali) and five newly bred Macedonian rice genotypes (P1 × M, P2 × M, P × MM, MBL × M and MBL × MM). Laboratory milling (peeling or bleaching or processing) was performed on a paddy processing machine to determine the head rice yield and by-products of milling: brokens, brans and husks. According to the results obtained, the highest head rice yield (percent of whole grains after milling rough rice kernels) of the domestic varieties was achieved with Biser-2 (54.01%), while the lowest one was shown by Prima riska (49.38%). The highest head rice yield of the prevalent Italian varieties was 59,68% (Monticelli) and the lowest one was 43.35% (San Andrea). Regarding the newly introduced Italian varieties, the values of the head rice yield ranged from 35.4% (Galileo) to 64.46% (Ellebi). Among the Turkish varieties, Kiziltan showed the highest head rice yield (62,67%) and Gönen the lowest one (43.34%). In the newly bred Macedonian rice genotypes, the head rice yield ranged from 55.60% (P1 × M) to 63.77% (P × MM). The percentage of brokens, bran and husks (hulls) in all investigated varieties and genotypes varied in different years of production.

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