Production and performance of sugarcane seeds (caryopses) from different hybridizations involving RB92579.

Carlos A Diniz,Clíssiab Da Silva,João M Dos Santos,Geraldo V.S Barbosa,João C De Araújo Neto,Vilma M Ferreira

doi:10.1590/0001-3765201820170271

Carlos A Diniz, Clíssiab Da Silva + Show 4 more

Open Access

https://doi.org/10.1590/0001-3765201820170271

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Abstract

A major challenge in sugarcane breeding program is the obtaining of enough number of seeds (caryopses) for the development of new improved cultivars. Genotypes differ in their function as pollen recipient and pollen donor, which also affect the seed performance. Thus, the aim of this study was to verify the production and performance of sugarcane seeds from different hybridizations involving RB92579 as pollen recipient and pollen donor. Twelve bi-parental crossings were carried out involving RB92579 and other different genotypes randomly chosen. Seed production potential was evaluated by percentage of fertile spikelets and caryopsis fresh weight. The seed physiological potential was determined by evaluating germination and vigor (index of germination rate, number of normal seedlings per gram of fuzz, and seedling dry weight). The results showed better performance for RB92579 as pollen donor for all characteristics studied. Therefore, RB92579 sugarcane cultivar should be used as pollen donor during hybridizations, condition that permits a greater production and physiological performance of seeds for the sugarcane breeding programs.

Highlights

Sugarcane (Saccharum spp.) is the world’s most important sugar-producing crop
A major challenge in sugarcane breeding program is the obtaining of enough number of seeds for the development of new improved cultivars (Heinz and Tew 1987)
It is important to determine the responses of each cultivar as pollen recipient and pollen donor during hybridization

Summary

Introduction

Sugarcane (Saccharum spp.) is the world’s most important sugar-producing crop. Global interest in sugarcane has increased because of its economic impact on the sustainable energy production (Hoang et al 2015). Sugarcane breeding programs have been working extensively to the development of hybrid seeds (caryopses) with desirable agroindustrial traits (Cheavegatti-Gianotto et al 2011). A major challenge in sugarcane breeding program is the obtaining of enough number of seeds for the development of new improved cultivars (Heinz and Tew 1987). Genotypes differ widely in their role as maternal parent (pollen recipient) or paternal parent (pollen donor). This can negatively affect seed production and later performance (McIntyre and Jackson 2001). It is important to determine the responses of each cultivar as pollen recipient and pollen donor during hybridization. Differences between inflorescence condition as pollen recipient and pollen donor should always be considered during the hybrid seed production

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