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Variations in the Proportions of Fertile Colchicine‐Treated Haploid Plants Derived from Winter Barley Hybrids
Author(s) -
Devaux P.
Publication year - 1989
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1989.tb00379.x
Subject(s) - biology , colchicine , ploidy , hordeum vulgare , hybrid , doubled haploidy , botany , poaceae , chromosome number , hordeum , aneuploidy , chromosome , horticulture , agronomy , genetics , karyotype , gene
In a doubled haploid production programme from many winter barley ( Hordeum vulgare L.) hybrids, the number of both fertile and sterile colchicine‐treated haploid plants was recorded for each hybrid. The proportion of fertile plants at maturity varies from 40 % to 98.73 %, depending on the origin of the material, with an average value of 71.30 %. The G‐test applied to the values indicates that the differences are significant. The correlation coefficient between the number of colchicine‐treated haploid plants which flowered and the number of fertile plants is high (r = 0.96). Several reasons are given to explain these variations, among which we discuss the direct effects of colchicine on chromosome doubling and the indirect effects, such as tillering and depression after treatment.