An assessment of family performance at the preliminary stages of selection in Mauritius
Code (CO)MSI99P3060
Author (AU)Badaloo, G. H.
Kearsey, M. J.
Domaingue, R.
Julien, M. H. R.
Title - English (ET)An assessment of family performance at the preliminary stages of selection in Mauritius
Thesis-Parent title (TH)Abstracts - 4th ISSCT Breeding and Germplasm Workshop: efficiency of sugr cane breeding, 18-22 May 1988, Hotel Coralia Mont Choisy, Mauritius
Document Type(DT)book chapter
Date of publication (DP)1998
Source (SO)p. 20
Publisher (PB)Réduit: Mauritius Sugar Industry Research Institute
Language of text (LT)En
Language of summaries (LS)En
Abstract (AB)The performance of twenty biparental crosses, representative of the MSIRI sugar cane breeding programme, was evaluated at the seedling, the first clonal and the simulated second clonal generations over two contrasting environments. There were highly significant genetical differences between the families for a range of important agronomical, morphological and quality characters, at all selection stages at both sites. For most characters the between full-sib family variation was significantly higher than the within family variation. In addition, additive and dominance genetic variation were highly significant for all traits at the two sites at the seedling stage. Narrow-sense heritability estimates were generally low to moderate for most traits whilst environmental variation was high. These results tend to indicate that family selection can be effective at the preliminary stages of selection. The practical implications of these findings on selection approaches are discussed.
Descriptors - English (DE)SUGARCANE
SELECTION
GENETICS
BREEDING
Descriptors - Geographic (DG)MAURITIUS
Sort Key 1(K1)Cane breeding and genetics
Sort Key 2 (K2)Selection: stages of selection
Date record entered (DA)1998-06-29
Language of analysis (LA)En
Location (LO)LIB
Processing status (PS)CAT
Number of copies (NC)1
MSIRI Staff (MS)PB