Varieties, plant breeding and release

Permanent URI for this collectionhttp://elibrary2.sugarresearch.com.au/handle/11079/13841

Research outcomes: Comprehensive and efficient variety breeding, selection and release programs responding to yield expectations, environmental constraints, resource scarcity and regional preferences. Faster varietal adoption using advanced methods for bulking, distribution and planting.

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1997 - 199912000 - 20071

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Author: search.filters.author.Jackson, PSubject: search.filters.subject.Variety selection

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    Selecting clones for better ratooning under wet harvesting conditions : SRDC final report CSR10S
    (1997) Jackson, P; Braunack, M; Foreman, J; Peatey, T; Wood, A
    There were three broad aims of this project: (i) To develop and evaluate a method for screening genetic material under conditions where there is (a) stool damage from harvesting machinery under wet conditions, and (b) waterlogging shortly after harvest. (ii) To evaluate a range of genetic material for ratooning under these conditions, including material generated from previous introgression breeding programs by CSR. (iii) To determine if a breeding program aimed at improving ratooning under wet conditions would be worthwhile, and if so, what sort of methods should be used.
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    Maximising whole-of-industry benefits from the Australian sugarcane improvement program through an optimal genetic evaluation system
    (2007) Wei, X; Stringer, J; Jackson, P; Cox, MC
    An optimal genetic evaluation system (GES) is the backbone of any breeding program because maximising genetic gains is primarily a matter of efficient selection. A GES provides information to breeders about which individuals should be selected as parents for crossing and which ones should be selected for commercial production.At the commencement of this project, selection of both parents and clones for commercial production was principally based on the index knows as net merit grade (NMG). NMG is based on the performance of a test clone (or a cross) relative to the average of a number of commercial varieties (or corsses) for the traits of commercial cane sugar (CCS), tonnes of cane per hectare (TCH), appearance grade and fibre content. NMG was used to generate a breeding code for selecting parental clones for crossing. Cross ratio, a measure of each cross's performance relative to the whole population at each selection stage, was used to determine priority of crosses. For selecting elite clones to be retained for further testing, NMG was used in all three selection stages to determine which clones would be advanced to next stage.