ISSN:
1432-2242
Keywords:
Hordeum vulgare L.
;
Gene effects
;
Salinealkaline soil-salt tolerance
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The weighted least square estimates of gene effects (Hayman 1958) were estimated using 7 generations of the cross ‘BG 25’בNP 21’ and ‘BH 15’× ‘RD 103’, and 11 generations of the cross ‘C 164’× ‘EB 1556’. The joint scaling test of Cavalli (1952) indicated the failure of a simple additive — dominance model in majority of the cases. The variability of the characters studied could not be explained by the 6- parameter model in cross ‘C 164’×’EB 1556’, but it could explain the majority of characters in the crosses ‘BG 25’בNP 21’ and ‘BH 15’בRD 103’. The grains per ear in ‘BG 25’בNP 21’ exhibited differential response of generation means to a change in the environment due, perhaps. to the more pronounced expression of additive gene action in saline-alkali soil. Among the components of epistasis, additive X additive and dominance X dominance types of epistasis were important in ‘BG 25’בNP 21’, while dominance X dominance type of epistasis was important in the crosses ‘C 164’× ‘EB 1556’ and ‘BH 15’בRD 103’. The cross ‘BH 15’× ‘RD 103’ appeared to be the least sensitive to a salinealkali soil condition.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00281841
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