ISSN:
1573-5036
Keywords:
Chlorosis
;
Genetic and phenotypic correlations
;
heritability
;
Iron-deficiency ratings
;
Population improvement
;
Sorghum bicolor (L.) Moench
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary One hundred S1 families from a random-mating sorghum [Sorghum bicolor (L.) Moench] population (NP21R) were rated visually for differences in iron-deficiency chlorosis in the field and in a growth chamber. Heritabilities on a family-mean basis were estimated for the first (0.63±0.15), maximum (0.79±0.15), and average chlorosis rating (0.84±0.15) recorded over S1 families in the field. Heritability on an individual plant basis was estimated for the average chlorosis ratings in the growth chamber (0.65±0.16). Phenotypic and genotypic correlations were large and negative between field chlorosis ratings and yield or yield-related traits, which indicated that the severity of chlorosis was an important factor in determining S1 family agronomic performance. Correlations between chlorosis traits over all S1 families in the growth chamber and field generally were small and nonsignificant.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02370160
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