Growth Evaluative Stimulation of Sugar beet Genotypes under Moderate Saline Stress

Subject Areas : crop production

كوروش ناظم ¹ (دانش آموخته كارشناسي ارشد، گروه زراعت و اصلاح نباتات، واحد مهاباد، دانشگاه آزاد اسلامی ، مهاباد- ایران.)
tooraj mir-mahmoodi ² (هیات علمی واحد مهاباد)

Received: 2013-11-16 Accepted : 2015-02-19 Published : 2014-12-31

Keywords: mild salinity , sugar beet , genotypes , grow induce,

Abstract :

To study the growth stimulation of sugar beet ( Beta Vulgaris L. )under mild salinity, a field study was conducted in Agricultural Research Center in Miandoab in combined analysis design with three replications during the crop year of 2013 in two separated normal and mild salinity ( Ec = 4-5-ds/m ). Combined analyses of variance showed that genotype in environment interaction was statistically significant on sugar content, sugar yield, extraction of sugar coefficient and white sugar yield. Interactions of genotype in specific conditions had significant effect on sugar percentage, sugar yield, coefficient of sugar extraction and white sugar yield. In this research, mild salinity condition induced sugar beet growth and increased traits such as root yield, sugar content, molasses of sugar, white sugar content, sugar yield. The mild salinity also increased it up to 10.5% and 20% compared with normal conditions. Genotypes of 14, 15 and 16 respectively, by Origen 004, 005 and Isela, in average conditions of 9.04, 10.34, 10.81 in normal condition and 16.59, 16.37 and 11.93 ton/ha in stress condition showed the highest sugar yield and were identified as the most suitable genotypes in both situations. In both normal and mild saline conditions between root yield, sugar content, sugar yield and its extraction a positive and significant correlation were observed. The results of factor analysis showed that in normal conditions, there were four factors of 92.5 percent and in mild salinity three factors of 87.80 percent which justified the total variation in root and sugar yield.

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