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Genetic variability and heritability of drought‐induced abscisic acid accumulation in spring wheat
Author(s) -
QUARRIE S. A.
Publication year - 1981
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1981.tb01036.x
Subject(s) - abscisic acid , heritability , cultivar , biology , spring (device) , dehydration , botany , genetic variability , horticulture , genotype , gene , genetics , biochemistry , mechanical engineering , engineering
. Twenty cultivars of spring wheat were examined for variation in abscisic acid (ABA) accumulation following partial dehydration of excised leaves. A 3‐fold range of ABA concentration was obtained. A cross between two cultivars which differed in drought‐induced ABA accumulation was used to study the heritability of ABA accumulation and to develop lines differing in their capacity to accumulate ABA. Broad sense heritability was 0–32 between the F 2 and F 3 generations and 0–70 between the F 3 and F 4 generations. Apparent homozygosity for ABA accumulation was achieved in several selections at the F 4 . The possible significance for drought resistance of differences in capacity to accumulate ABA is discussed.