The efficiency of transplanting sugarcane seedlings directly in the field and its impact on the selection cycle and resources
| MSI05P4161 | |
| Mungur, H. Ramdoyal, K. Santchurn, D. | |
| The efficiency of transplanting sugarcane seedlings directly in the field and its impact on the selection cycle and resources | |
| Lalouette, J. A., Bheenick, K. J. and Nundalallee, C. (eds), Proceedings, Seventh Meeting of Agricultural Scientists, 4-6 May 2005, Boname Hall, MSIRI, Mauritius. (Draft) | |
| book chapter | |
| 2005 | |
| p. p. 135-144 | |
| Réduit: Food and Agricultural Research Council | |
| In: Book of Abstracts. Seventh Meeting of Agricultural Scientists, 4-6 May 2005, Boname Hall, MSIRI, Réduit, Mauritius. p 29 (Proceedings available at http://www.gov.mu/portal/sites/ncb/moa/farc/amas2005/pdf/MAS20051stDraft.pdf) | |
| En | |
| En | |
| A trial was carried out to study the feasibility and efficiency of transplanting sugar cane seedlings directly in the field without potting and to assess its impact on the selection cycle and on resources. Seedlings of five families were transplanted on one-metre wide raised beds at three spacing: close, intermediate and wide, at population densities of seven, five and three seedlings/m2 respectively. Selection was practised when the crop was aged ten months and all genotypes that produced enough planting material, including those that would have been rejected on visual assessment, were evaluated in two-metre row plots at the 1st clonal stage. Mortality rate of seedlings was highest in the closest spacing. Significant differences between spacing were found for stalk number and stalk height but not for stalk diameter. Families differed significantly for all the characters measured and family x spacing interaction was detected for stalk diameter and stalk height. Phenotypic correlation coefficients between the seedling stage and the 1st clonal stage were very low for stalk number, stalk diameter and stalk height. Broad-sense heritability for stalk number at the seedling stage was very low, while stalk diameter and stalk height were more heritable. Among genotypes that would have been rejected at the seedling stage based on visual appreciation, only a few were re-selected at the 1st clonal stage. Stalk diameter and stalk height were the most reliable criteria for selecting seedlings. The intermediate spacing was most appropriate for transplanting seedlings directly in the field. At this planting density, 8.5 hectares of land, 890 man-days and other resources such as transport and potting medium can be saved each year. In addition, this new technique of evaluating seedlings shortens the selection cycle by one year and impacts favourably on the next stage of selection with respect to planting and selection periods. | |
| sugarcane selection seedlings selection cycle transplanting of seedlings visual selection genotypes heritability | |
| Mauritius | |
| Cane breeding and genetic improvement | |
| Selection: Stages of selection | |
| 2005-05-03 | |
| En | |
| LIST | |
| PB |