New Zealand Journal of Crop and Horticultural Science abstracts
Proposed breeding strategy for yield improvement
of hexaploid triticale (x triticosecale Wittmack)
1. Genetic variability and phenotypic stability
S. LAMADJI
Sugarcane Breeding Department
Indonesian Sugar Research Institute
Jalan Pahlawan 25 Pasuruan 67126
Indonesia
A. G. FAUTRIER
D. L. McNEIL
Department of Plant Science
P. O. Box 84
Lincoln University
Canterbury, New Zealand
J. R. SEDCOLE
Department of Computing and Biometrics
P. O. Box 84
Lincoln University
Canterbury, New Zealand
Abstract An experiment to partition the components of
variation in selected lines of triticale was conducted at Lincoln, Canterbury,
New Zealand. Genetic variation, genotype x environment interaction, and
phenotypic stability of 20 quantitative characters, as well as biochemical
variation were studied in 11 hexaploid triticale lines. For the quantitative
study, the lines were grown in four environments. The randomised complete block
design was used in each environment. Data were collected on an individual plant
basis except for five characters, measured on a plot basis. The results showed
that genetic variation for most of the characters was high as expressed by the
high broad sense heritability (>50%). Biochemical variation showed major
differences between lines, though each line, except `Till' and `Salvo', was
relatively homogenous. Genotype x environment interaction was strong for 16
characters. Lines such as `Lasko', `Salvo', `Presto', `Juanillo', `Aranui', and
`Swans' have great potential for triticale yield improvements as they had
average stability and were well adapted to all environments. Of the early
maturing lines--'Fulis', `Juanillo', `Swans', and `Till' are likely to be the
best for incorporation in the breeding programme as they had average stability
and could be harvested earlier than other lines.
Keywords genetic variability; biochemical variation;
phenotypic stability; phenotypic adaptability; triticale
New Zealand Journal of Crop and Horticultural Science, 1995, Vol. 23:
1-11
0114-0671/95/2301-0001 $2.50/0 (c) The Royal Society of New Zealand
1995
PDF file of entire paper: medium quality (1314K); (scanned from paper original: notes about this process)
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