Combinational ability of crossing components and heterosis of F1 hybrids of sugar sorghum by biomass yield

Oksana Kibalnik,Dmitry Semin,Irina Efremova,Tatiana Larina,E Renev,Y Shavrokov,R Changzhong,V Romanyuk,G Batalova

doi:10.1051/bioconf/20213601027

Oksana Kibalnik, Dmitry Semin + Show 7 more

Open Access

https://doi.org/10.1051/bioconf/20213601027

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Abstract

Currently, the most promising direction of breeding is the creation of F1 hybrids of sugar sorghum, based on the identification and selection of parental forms with high combinational ability. The source material and F1 hybrids were grown in the arid conditions of the Saratov Right Bank (Russia): the hydrothermal coefficient during the growing season was 0.68. The evaluation of the combinational ability of crossing components was carried out using the topcross method. As a result of the tests, the L-52/13 line was identified with high GCA effects (15.71), and the highest SCA dispersions were found in the Saratovskoe 90 variety and the L-39/12 line (91.80-189.27). It was found that the type of sterile cytoplasm of iso-nuclear CMS-lines had a significant impact on the manifestation of SCA in terms of biomass yield: higher dispersion indicators were noted in 9E Zheltozernoye 10 (36.66). Genes with an additive effect are involved in the genetic control of this trait in paternal forms, and non-additive genes in maternal forms. In addition, each hybrid combinationwas observed with superdomination: the coefficient of phenotypic dominance varied from 2.01 to 18.91. It is advisable to use the obtained information in the hybridization of sugar sorghum to obtain high-heterosis hybrids.

Highlights

IntroductionIn many countries of the world, developments are underway to obtain an ecological fuel (for example, bioethanol), which would replace hydrocarbons [1]
In many countries of the world, developments are underway to obtain an ecological fuel, which would replace hydrocarbons [1]
The variance analysis confirmed the differences between the tested varieties of sugar sorghum and F1 hybrids in terms of biomass yield

Summary

Introduction

In many countries of the world, developments are underway to obtain an ecological fuel (for example, bioethanol), which would replace hydrocarbons [1]. Bioethanol production is the fastest growing industry in the world. It is mainly produced from reproducible raw materials: specially grown energy plants. These include sugar cane, sugar and grain sorghum, rice, sugar beet, potatoes, topinambur, corn, barley, rye and others. For growing in arid regions, one of the most popular agricultural crops is sugar sorghum. This crop is characterized by a wide adaptive ability, high growth, content of water-soluble sugars in the juice of the main stem is up to 16-23% [2]. The creation of new highly productive varieties and hybrids of sorghum intended for use as an alternative raw material in the production of bioethanol is a promising direction in breeding

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