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  • 1
    Electronic Resource
    Electronic Resource
    A short review of research on male sterility and prospects for F1 hybrid varieties in field beans (Vicia faba L.) (1989)
    Springer
    Euphytica 41 (1989), S. 87-90 
    Details
    ISSN: 1573-5060
    Keywords: Vicia faba ; field bean ; faba bean ; cytoplasmic male sterility ; maintainer and restorer lines ; revertants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary It has not yet been possible to utilise cytoplasmically inherited male sterility (CMS) in Vicia faba, in the commerical production of F1 hybrids. The main problem has been a rapid increase in the proportion of fertile revertants during multiplication. Investigations, mainly in France, have clarified environmental causes of phenotypic instability, CMS and maintainer lines with improved stability have been selected, and two new cytoplasms have been produced by mutation of the first two. CMS is known to be associated with cytoplasmic spherical particles, and recognisable types of double stranded RNA, and there may also be an association with mitochondrial DNA, and polypeptides of mitochondrial origin. The better understanding of CMS may eventually lead to more easily managed forms, either through genetic manipulation or biochemical assays that breeders can use for screening for stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022416
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  • 2
    Electronic Resource
    Electronic Resource
    Prospects for commercialisation of F1 hybrid field beans Vicia faba L. (1989)
    Springer
    Euphytica 41 (1989), S. 81-86 
    Details
    ISSN: 1573-5060
    Keywords: Vicia faba ; F1 hybrids ; heterosis ; cost/benefit ratio ; cytoplasmic male sterility ; revertants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Yields of F1 hybrids averaged 22% more than the mean of their heavier-yielding inbred parents, and the advantage of hybrids over composite populations varied from 3 to 18%, more in winter than spring beans. From estimates of cost/benefit ratios that included the possibility of poor seedset on male steriles, on average 1 year in 10, it was concluded that hybrid seed might cost more than twice that of conventional varieties, but a 10% increase in yield on a 4t/ha crop would cover this extra cost of seed. Thus, hybrids could still be the more profitable type of variety provided seed rates are low and yield levels high. It is therefore still worthwhile to pursue the goal of stable cytoplasmic male sterility (CMS) and/or a control of the rate of increase in revertants. Some methods are suggested whereby it might be possible to reduce revertants, improve pollination or exploit heterosis other than with CMS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022415
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    Paper (German National Licenses)
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