منابع مشابه
Male Sterility In Soybean-An Overview
The most common type of reproductive mutations observed in the soybean [Glycine max (L.) Merr.] are those that induce male sterility. The high frequency of occurrence of male-sterile mutations indicates that a number of genes influence the processes of microgametogenesis and microsporogenesis. The current knowledge of these mutations is summarized. The origins of male-sterile mutations, their i...
متن کاملObservations on Inheritance of Male Sterility in Apricot
Male sterility is defined as the deviant condition in normally bisexual plants when no viable pollen is formed (Frankel and Galun, 1977). Male sterility has been exploited as an effective tool to aid hybrid seed production in many crops. Using this trait, seed producers can transform one inbred from a planned hybridization into a “female” line, thereby ensuring seed of hybrid origin on the male...
متن کاملMolecular mapping of five soybean genes involved in male-sterility, female-sterility.
In soybean, asynaptic and desynaptic mutants lead to abnormal meiosis and fertility reduction. Several male-sterile, female-sterile mutants have been identified and studied in soybean, however, some of these mutants have not been mapped to locations on soybean chromosomes. The objectives of this study were to molecularly map five male-sterile, female-sterile genes (st2, st4, st5, st6, and st7) ...
متن کاملSegregation distortion in a region containing a male-sterility, female-sterility locus in soybean.
In diploid segregation, each alternative allele has a 50% chance of being passed on to the offspring. Mutations in genes involved in the process of meiotic division or early stages of reproductive cell development can affect allele frequency in the gametes. In addition, competition among gametes and differential survival rates of gametes can lead to segregation distortion. In a recent transform...
متن کاملThe Interaction of Nuclear and Cytoplasmic Factors in the Inheritance of Male Sterility in Maize.
ALE sterility in plants is of unusual interest since its inheritance is due M to a number of different mechanisms. In the early days of genetics a controversy existed as to the relative importance of the nucleus and the cytoplasm in inheritance. Many investigators believed the nucleus was all-important and relegated the cytoplasm to a non-essential role. That the cytoplasm did not always play a...
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ژورنال
عنوان ژورنال: Cropp Breeding and Applied Biotechnology
سال: 2002
ISSN: 1984-7033
DOI: 10.12702/1984-7033.v02n04a07