Completed projects and reports

Now showing 1 - 5 of 5

Evaluation and re-structuring of regional selection programs to maximise efficiency and speed of cultivar release
(2002) Chapman, SC; Rattey, A; Jackson, PA
Continual delivery of new cultivars is required to maintain resistance to existing and new pests and diseases, and to provide constant improvement in crop productivity, quality and profitability for an internationally competitive sugar industry. Sugarcane breeding comprises two major activities: genetic variation is created by crossing parents (selected on historical performance of their progeny in the case of proven parents, or performance for heritable traits in trials in the case of new parents), and the best clones for release are selected through a multi-stage selection process that involves progressively more intensive testing of fewer clones over several years in multiple sites. In Australia, the geographic variation in climate and other conditions in the different regions, the difficulties of moving sugar cane planting material, and differences between regions for some diseases (e.g. the Fiji disease line between the Central and Burdekin regions) had resulted in six cultivar crossing and selection programs, each targeting different regions: North (inc. Atherton Tableland), Herbert, Burdekin, Central, South and northern NSW. The small Ord irrigation area is serviced via testing and selection of elite clones from all of these regional trials. Currently crosses are made in each of four specific regions based on performance of parents (in trials or via progeny performance) in that region. Clones from crosses are initially chosen from small plots in one site per region. In further selection, breeders conduct multi-row plot trials across sites and seasons, with intensive testing within regions, and later exchange of the most promising clones between regions. At the start of this project, there was no basic information on whether clones generated directly from crosses generally perform consistently relative to each other between regions, or whether many clones exhibit specific adaptation to regional environments. This information, and quantifying the relative sizes of genotype, genotype x region interaction, and genotype x within-region interaction variances, in genetic populations generated in breeding programs, is basic information needed for designing an optimal selection system that collectively targets all regions.
Improved sugarcane farming systems : SRDC Final report BSS286
(2010) Salter, B; Bell, MJ; Stirling, GR; Garside, AL; Moody, PJ
This project - Improved Sugarcane Farming Systems (BSS286) - was designed to build on the outcomes of phase 1 and 2 or the Sugar Yield Decline Joint Venture (STDJV). Thus its main focus was on issues that had been identified in the SYDJV that were not fully researched in the earlier programs and/or required further development.
Better targeting new cultivars : SRDC Grower Group Innovation Project
(2012) Rudd, A
Aim: Better targeting of new cultivars for soiltypes/environments not covered by BSES. Conduct: Trials with advanced clones and other best bet’s were planted in 2009, 2010 & 2011 were planted in both the Mossman and Tableland mill areas. The 2009 trials were assessed in 2010 and 2011 and the 2010 trials assessed in 2011. Ten overseas clones with a degree of smut resistance were included in the Mossman trial at the request of the local industry. Key Results: Provided key personnel and district growers with yield data supporting recently released and prospective varieties on local soil types and in local environments. No overseas clones warranted further testing. Key Learnings: Data obtained was a factor in the providing local growers with the confidence to rapidly adopt new varieties.
evelopment of a strategy for selection of high-CCS cultivars for high-fertility environments in northern Queensland : SRDC Final report BSS179
(2004) Berding, N; Hurney, AP; Swain, RS
The need to develop a strategy for cultivar development for high-fertility soils present in northern Queensland was driven by industry concerns regarding a declining CCS pattern in years prior to commencement of this project. The strategy embodied in this project was to grow three populations of clones of commercial yield and CCS potential under these conditions, as typified by Innisfail and Tully series soils, and determine whether above-ground traits could act as predictors of crop erectness at harvest.
Regeneration of sugarcane plants from protoplasts
(1991) Taylor, PWJ
This study aimed to develop a protoplast regeneration system for sugarcane so that gene transfer techniques could be applied for cultivar improvement. Published techniques for embryogenic callus culture, cell suspension culture, protoplast culture and plant regeneration in sugarcane were developed and tested using only a few cultivars. These techniques were further developed, evaluated and adapted for application to a range of commercial sugarcane cultivars.

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