News Update on Sorghum Genotypes Research: Aug – 2019

Solute accumulation and distribution during shoot and leaf development in two sorghum genotypes under salt stress

Seedlings of 2 forage sorghum genotypes (Sorghum bicolored (L.) Moench) differing in salt tolerance were subjected to zero and a hundred millimeter NaCl and shoot development, leaf elongation, and organic and inorganic solutes contents in leaves were measured. Salt stress reduced each shoot development and leaf elongation and increased leaf senescence and injury. It conjointly junction rectifier to accumulation of nephrotoxic ions (Na+ and Cl−), organic solutes (carbohydrates, amino acids and proline), and reduction of K+ content in leaf blades. [1]

Flavonoid composition of red sorghum genotypes

The result of genotype on flavonoid composition was investigated in thirteen sorghum varieties mistreatment HPLC-DAD. Sorghums with red/purple secondary plant color had the best levels of 3-deoxyanthocyanins (32–680 μg/g) with the black seed vessel sorghums having the highest. Sorghums with red secondary plant color had a high proportion of apigeninidin compounds (66–89%), that instructed that secondary plant color affects 3-deoxyanthocyanin composition. [2]

Selecting sorghum genotypes expressing a quantitative biosynthetic trait that confers resistance to Striga

One of the most effective characterised mechanisms of host resistance to witchweeds (Striga spp.) is exudation by host plant roots of comparatively low amounts of compounds that Striga seeds need as stimulants for germination. we discover that every one sorghums tested, no matter whether or not they ar vulnerable or immune to Striga, turn out equivalent amounts of sorgoleone, the alkylated hydroquinone we have a tendency to antecedently known from sorghum root exudate because the 1st host-derived Striga germination stimulant to be characterised. [3]

Growth temperature and genotype both play important roles in sorghum grain phenolic composition

Polyphenols in sorghum grains are a supply of dietary antioxidants. Polyphenols in six numerous sorghum genotypes full-grown beneath 2 day/night temperature regimes of optimum temperature (OT, 32/21 °Cand hot temperature (HT, 38/21 °C) were investigated. a complete of twenty three phenoplast compounds were absolutely or tentatively known by HPLC-DAD-ESIMS. Compared with alternative pigmented varieties, the phenoplast profile of white sorghum PI563516 was easier, since fewer polyphenols were detected. [4]

Yield Adaptability and Stability of Grain Sorghum Genotypes across Different Environments in Egypt using AMMI and GGE-biplot Models

Presence of G×E interaction reduces the correlation between makeup and constitution parameters and complicates progress of choice. Among many strategies projected for analysis of the GE interaction, the AMMI and GGE-biplot square measure the foremost informative models. the target of this study was to estimate the G×E interaction in sorghum parental lines and to spot sorghum B-lines of stability and flexibility across totally different environments exploitation the AMMI and GGE-biplot models. [5]

Reference

[1] de Lacerda, C.F., Cambraia, J., Oliva, M.A., Ruiz, H.A. and Prisco, J.T., 2003. Solute accumulation and distribution during shoot and leaf development in two sorghum genotypes under salt stress. Environmental and Experimental Botany, 49(2), pp.107-120. (Web Link)

[2] Dykes, L., Seitz, L.M., Rooney, W.L. and Rooney, L.W., 2009. Flavonoid composition of red sorghum genotypes. Food Chemistry, 116(1), pp.313-317. (Web Link)

[3] Hess, D.E., Ejeta, G. and Butler, L.G., 1992. Selecting sorghum genotypes expressing a quantitative biosynthetic trait that confers resistance to Striga. Phytochemistry, 31(2), pp.493-497. (Web Link)

[4] Growth temperature and genotype both play important roles in sorghum grain phenolic composition

Gangcheng Wu, Stuart K. Johnson, Janet F. Bornman, Sarita J. Bennett, Michael W. Clarke, Vijaya Singh & Zhongxiang Fang

Scientific Reports volume 6, Article number: 21835 (2016) (Web Link)

[5] Al-Naggar, A. M. M., El-Salam, R. M. A., Asran, M. R. and Yaseen, W. Y. S. (2018) “Yield Adaptability and Stability of Grain Sorghum Genotypes across Different Environments in Egypt using AMMI and GGE-biplot Models”, Annual Research & Review in Biology, 23(3), pp. 1-16. doi: 10.9734/ARRB/2018/39491. (Web Link)