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Field trials in oil palm breeding: a manual.

Book cover for Field trials in oil palm breeding: a manual.

Description

A central objective in Verdant's mission is to develop better, more productive and more sustainable cultivars of oil palm (Elaeis guineensis), rubber and other plantation crops, particularly through plant breeding. Field testing is an essential component in selecting and developing new varieties with superior performance for yield, quality, pest and disease resistance and in meeting new market dem...

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Chapter 6 (Page no: 49)

Trial planting.

A brief introduction to selection is given. This is based on a natural process, but breeders aim to accelerate it by screening selected palms within and between genotypes or progenies under field conditions. Breeding is only effective if the trait of interest is controlled genetically (traits that are strongly influenced by the environment are better controlled by agronomy and husbandry). Screening is traditionally done by phenotypic scoring of plant performance in the field (e.g. by measuring yield), but, increasingly, traits may be selected for by DNA screening (genotypic selection). The advent of DNA screening now means that an increasing number of traits can be screened for at the seedling stage and selections can be made in the nursery (e.g. for shell thickness). Thus, field trialling can be more focused (e.g. tenera-only trials) and material of no interest eliminated (e.g. sterile pisiferas). DNA analyses can also aid in cross-selection (e.g. in conservative breeding - elite × elite crosses - or more speculative breeding - elite × wild, or wild × wild crosses), and provide a balance between the two. Once a breeding programme has been developed it needs to be coordinated so that material (from various crosses) is available for seed processing, nursery plant production and simultaneous field planting. In anticipation of this, a trial design needs to be considered (finalised when the material is realised) so that field preparations (appropriate land designated, clearance of previous crops, fallow, ploughing, plotting, drainage, etc.) and a field layout implemented. Various trial designs are discussed, and recommendations made depending on trial objectives and available materials.

Other chapters from this book

Chapter: 1 (Page no: 3) Introduction. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 2 (Page no: 15) Health and safety considerations. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 3 (Page no: 23) Pre-trialling considerations and activities. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 4 (Page no: 33) Land preparation. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 5 (Page no: 45) Material preparation. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 7 (Page no: 59) Recording. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 8 (Page no: 77) Ganoderma trials. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.
Chapter: 9 (Page no: 85) Pre-trial screening using DNA diagnostics. Author(s): Sitepu, B. Laksono, N. D. Setiawati, U. Nur, F. Rahmaningsih, M. Anwar, Y. Widodo, P. Forster, B. P. Purba, A. R.