Genetic variability and correlation of stalk yield-related traits and sugar concentration of stalk juice in a sweet sorghum (Sorghum bicolor L. Moench) population

文献类型： 外文期刊

第一作者： Zou, Guihua

作者： Zou, Guihua;Yan, Song;Zhai, Guowei;Tao, Yuezhi;Zhang, Zhipeng;Zou, Jianqiu

作者机构：

关键词： Correlation;Genetic variability;Recombinant inbred population;Sorghum bicolor L. Moench;Stalk yield related traits;Sugar concentration;Sweet sorghum

期刊名称：AUSTRALIAN JOURNAL OF CROP SCIENCE （ 影响因子：1.632； 五年影响因子：1.686 ）

ISSN： 1835-2693

年卷期： 2011 年 5 卷 10 期

页码：

收录情况： SCI

摘要： The productivity of sweet sorghum (Sorghum bicolor L. Moench), a raw material for ethanol production, is mainly determined by stalk yield and sugar content. To understand inherent differences and relationship between stalk yield related traits and sugar concentration of stalk juice, a large recombinant inbred (RI) population derived from a grain sorghum x sweet sorghum was grown in three different trials. Seven stalk yield related traits including heading date (HD), plant height (PH), harvested stem length (HSL), number of nodes (NN), stem diameter (SD), panicle length (PL) and panicle neck length (PNL), along with sugar concentration (SC) of stalk juice were evaluated. Significant differences among genotypes were observed for all measured traits. A large proportion of the phenotypic variance for PH, HSL, PL and SC was attributed by genotypic variance. Highest ratio of genotype x environment (G x E) interaction variance to phenotypic variance was observed for SD. Moderate proportion of phenotypic variances for HD, NN and PNL were explained by genotypic variances. Both the magnitude and direction of correlation coefficients among the traits measured were varied in different trials. PH, HSL and NN had consistently positive and significant correlation with SC. PNL had no significant correlation with SC in all three trials. HD, SD and PL had no consistently significant correlations with SC in three trials. Information obtained from this study is very helpful to further understand the genetic mechanism of stalk yield related traits and sugar concentration of stalk juice in this RI population.

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