Document Type : Scientific - Research
Authors
1
Assistant Professor of Sugar Beet Seed Institute (SBSI) - Agricultural Research Education and Extension, Karaj,Iran
2
Agricultural and Natural Resources Research Center of Khorasan Razavi, Agricultural Research, Education and Extension Organization (AREEO), Iran
3
Assistant Professor of Sugar Beet Research Department, West Azarbayjan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (ARREO). Urmia, Iran.
4
Assistant professor of Sugar Beet Research Department, Hamedan Agricultural and Natural Resources Research and Education Center (AREEO), Hamedan, Iran.
5
Instructor of Agricultural and Natural Resources Research Center Fars, Iran.
6
Associate professor of Sugar Beet Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center (AREEO), Kermanshah, Iran.
7
Professor of Sugar Beet Seed Institute (SBSI) - Agricultural Research Education and Extension, Karaj,Iran
Abstract
The quality and productivity of sugar obtained from sugar beet is affected by genotype, environment and agronomic management. This study aimed to analyze the stability and adaptability of 15 new sugar beet genotypes for white sugar yield and adaptability. The hybrids were developed by crossing rhizomania resistant single-crosses with six rhizoctonia resistant pollinators including two national and three foreign checks using a randomized complete block design with four replications. Trials were performed at research stations of Agricultural Research Centers in four regions including Karaj, Mashhad, Miandoab, and Hamedan. To analyze the stability and the effect of genotype × environment interaction, GGE-biplot graphical method was applied. Evaluation of hybrids in Mashhad area indicating their response to resistance rhizomania disease. Results of the combined analysis of variance showed a significant differences among varieties for white sugar yield. The main effects of environment, genotype × environment interaction, and genotype defined 51.7, 9.5 and 9.0% of the total variations, respectively. The correlation between environments showed that the environments were different in terms of ranking and adaptability of genotypes. The highest white sugar yield was achieved in Miandoab, followed by Karaj, Mashhad and Hamedan, respectively. There was a positive correlation between Hamedan and Midandoab, while a negative correlation was observed between Mashhad and Karaj. Based on the GGE biplot model, genotypes G15, G7 and G10 are highly stable with high sugar yield production across the environments.
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