Genotype×environment interactions in sugarcane between China and Australia

Abstract

Sugarcane improvement has traditionally been conducted by nationally focussed breeding programs, with some exchange of elite cultivars among some programs. It has been generally assumed by breeders that genotype × country interactions are large, and therefore selection trial data in one country may be of limited relevance to another. However, no studies quantifying clone × country interactions have been reported to our knowledge. In research reported here, a common set of mostly unselected sugarcane genotypes was evaluated in commercial production environments in Australia and China. Consistent with past studies, genotype × site interaction was an important source of variation within each country. Overall a moderate to high genetic correlation existed between production environments in China and Australia for cane yield and sugar content (0.77 for both traits). This suggests that despite difference in environmental conditions and crop management in production environments between countries, that selection trials in China have some relevance for selecting clones for Australian environments and vice versa. It also supports the hypothesis that regular exchange of selected germplasm from effective breeding programs between countries will have mutual benefits.

Adaptability and phenotypic stability of sugarcane clones

“…The knowledge of the ecophysiological response of each genotype in each production environment is fundamental for crop development (Antunes et al, 2016). The performance of the genotypes depends on the specific environmental conditions in which they are grown (Chen et al, 2012). Therefore, it is important to identify genotypes of predictable performance and Pesq.…”

Assessment of Gene Flow to Wild Relatives and Nutritional Composition of Sugarcane in Brazil

“…One of the priority points in substantial equivalence studies is the possible interference of genotype × environment (G × E), which is frequently an important source of variation in sugarcane cultivars observed in many breeding programs all over the world and constitutes a complicating factor during the selection of clones (e.g., Kang and Miller, 1984;Milligan et al, 1990;Jackson and Hogarth, 1992;Ramburan et al, 2011;Chen et al, 2012). The differential behavior of genotypes in different environments, i.e., the genotype-by-environment interaction, results in alterations in the genotype ranking in competition trials or a change in values of the differences between genotypes in different localities.…”

“…The importance of the study on G × E interactions is well-recognized (Kumar et al, 2018). In this context, the cultivars exposed to some kind of stress may show a wide range of complex and variable responses which depend on the genotype's inherent sensitivity to stress (Chen et al, 2012). The information on nutritional composition and other components present in both fresh and processed sugarcane is necessary for the development of programs in many areas, such as nutrition, agriculture, industry and food commerce (Giuntini et al, 2006), as well as for being utilized as reference in biosafety assessments of GM cultivars.…”

Assessment of sugarcane varieties for their stability and yield potential in Fiji

“…The relative performance of genotype differs due to the difference in GE interactions in different environments. Many authors, such as Kennedy (1978), Galvez (1980), Tai et al (1982), Kang and Miller (1984), Jackson and Hogarth (1992), Ceccarelli (1996), Rattey and Kimbeng (2001), Khan et al (2002), Kimbeng et al (2002Kimbeng et al ( , 2009, Chapman (2004), Ferreira et al (2006), Queme et al (2010), Tiwari et al (2011), Chen et al (2012), Luo et al (2015), Rea et al (2015), Pereira et al (2017) etc., reported significant genotype-environment interactions.…”