Genetic gain in yield and protein over two cycles of recurrent selection program

Niu, N., Arief, V. N., Delacy, I. H., Lush, D., Dieters, M. J. and Zhang, G. S. (2009). Genetic gain in yield and protein over two cycles of recurrent selection program. In: 14th Australasian Plant Breeding and 11th SABRAO Conference, Cairns, Australia, (). 10–14 August 2009.

Author Niu, N.
Arief, V. N.
Delacy, I. H.
Lush, D.
Dieters, M. J.
Zhang, G. S.
Title of paper Genetic gain in yield and protein over two cycles of recurrent selection program
Conference name 14th Australasian Plant Breeding and 11th SABRAO Conference
Conference location Cairns, Australia
Conference dates 10–14 August 2009
Journal name SABRAO Journal of Breeding and Genetics   Check publisher's open access policy
Place of Publication Bangkok, Thailand
Publisher Society for the Advancement of Breeding Researches in Asia and Oceania
Publication Year 2009
Sub-type Poster
ISSN 1029-7073
Volume 41
Issue Special Supplement
Language eng
Abstract/Summary Increasing grain yield and protein are important wheat breeding goals; however, the simultaneous improvement of both traits is complicated by a strong negative correlation and genotype by environment interaction (G×E). A recurrent selection program (RSP) was initiated to produce germplasm which combines both high yield-potential and increased protein content for the northern wheat-growing region of Australia. Diallel crossing amongst 10 cultivars (7 high yield and 3 high quality cultivars), followed by random mating amongst the F1s were used to produce the founding segregating population. Two years of multi-environment trails were conducted in the GRDC Northern Grain Region (NR) for each of the initial (RSA0) and first (RSA1) cycles of recurrent selection. Data from the two cycles were analysed to evaluate the genetic gain achieved over the two cycles of selection, based on three potential selection strategies. Selection based on yield or protein only increased selected trait but reduced the other traits. However, application of selection based on yield, protein and yield-adjusted protein simultaneously increased both yield (7.76% and 1.74% for RSA1 and RSA0 respectively) and protein (0.26% and 0.79% for RSA0 and RSA1 respectively).
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: School of Agriculture and Food Sciences
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Created: Mon, 01 Aug 2011, 14:14:43 EST by Christopher O'Keefe on behalf of School of Land, Crop and Food Sciences