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- Title
Response of Sericea Lespedeza Genotypes Low in Tannins to Different Environments.
- Authors
Mosjidis, J. A.
- Abstract
Transfer of the low-tannin trait to otherwise desirable sericca lespedeza high-tannin lines produced genotypes with considerably lowered forage yield. It is not known if low-tannin sericeas are proportionally less productive than high-tannin sericeas in high yielding environments. If so, low-tannin senceas would be less desirable to grow in more productive environments. Regression analysis was used to partition GE interactions between regressions and the residuals after regression and to measure the response to changing environments. SHUKLA's stability-variance parameters were used to measure genotype stability. Variance and coefficient of variation were calculated across environments for each genotype and rank correlated to determine their usefulness in the early stages of cultivars testing. Stability analysis was carried out on the day forage yield of 10 genotypes grown in 10 environments in Alabama. The only low-tannin genotype that consistently responded to environmental fluctuations like 'Serala' was 74 100 5. Low-tannin sericeas were found to be proportionally less productive than high-tannin sericeas in high-yielding environments. However, it is possible to select low-tannin lines with an environmental response similar to high-tannin sericeas. Rank correlations among stability parameters indicated that EV is a stability parameter which is easy to calculate and could be used in the early stages of cultivar testing.
- Subjects
LESPEDEZA cuneata; GENOTYPE-environment interaction; TANNINS; REGRESSION analysis; FORAGE plants; LESPEDEZA
- Publication
Plant Breeding, 1988, Vol 101, Issue 4, p302
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1111/j.1439-0523.1988.tb00302.x