The Nature of the Virido-albina/striata Mutant Induced During Storage in Barley Seeds

Dourado, A. M.; Roberts, Ε. H.

doi:10.1093/oxfordjournals.aob.a086851

Cited by 4 publications

(2 citation statements)

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“…There was a significant increase in chlorophyll-deficient mutations in all species, as well as increased pollen abortion. In a later study (10,11), barley and pea seeds were examined in the second and third generation after seed aging to confirm the induction of chlorophyll-deficient and other mutations as a result of seed aging.…”

Section: Point Mutationsmentioning

confidence: 99%

“…It is well-known that most mutations are deleterious and are quickly eliminated through natural selection. Also, even in seed lots where viability has declined 50% or more, the percentage of mutations is only on the order of 1% to 4% (10,11). There is also the possibility that mutations could be beneficial, or at least serve as genetic mark ers and thus be of value in expanding the genetic variability within a germplasm collection.…”

Section: Point Mutationsmentioning

confidence: 99%

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Genetic Changes in a Collection over Time

Roos

1988

horts

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Much emphasis has been placed on the need to preserve plant genetic resources (13, 17, 18, 28, 31, 50). As a reuslt, the number of accessions added to gene banks around the world has risen dramatically over the past 10 to 12 years. The International Board for Plant Genetic Resources (IBPGR), during its first decade of work (1974–84), arranged for the collection of ≈ 121,000 samples of germplasm from more than 90 countries around the world (19). At the USDA National Seed Storage Laboratory, accessions in storage have increased from 91,000 in 1976 to more than 204,000 in 1986. These accessions represent ≈370 genera and 1960 species. The large influx of samples during recent years has placed greater responsibility on germplasm curators to ensure that samples are properly handled, including periodic germination testing and regrowing of samples when needed.

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Section: Point Mutationsmentioning

confidence: 99%

Section: Point Mutationsmentioning

confidence: 99%