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  • Inheritance  (5)
  • Springer  (5)
  • Frontiers Media
  • Wiley
  • 1
    Electronic Resource
    Electronic Resource
    Detection and inheritance of stylar ribonucleases associated with incompatibility alleles in apricot (1998)
    Springer
    Sexual plant reproduction 11 (1998), S. 153-158 
    Details
    ISSN: 1432-2145
    Keywords: Key words Apricot ; Incompatibility ; Inheritance ; Prunus armeniaca ; Ribonuclease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Stylar proteins were surveyed by non-equilibrium pH gradient electrofocusing to identify S-RNases associated with gametophytic self-incompatibility in nine apricot cultivars. RNase activities associated with the alleles of incompatibility S 1 , S 2 , S 5 , and S 6 and with the allele of compatibility Sc were clearly identified. Two other bands that we considered related to the alleles S 3 and S 4 were unique to cultivars Sunglo and Harcot, respectively. Two generations of 17 seedlings from the cross Moniquí× Pepito and 38 from Gitano × Pepito were used to determine the inheritance of the S-RNases. Inheritance of these RNase bands followed the expected segregation ratios and the band combinations correlated perfectly with the known self-incompatibility status of the seedlings determined after self-pollination and observation of pollen tube growth. All evidence presented in this study strongly suggests that RNases are associated with gametophytic self-incompatibility of apricot and that RNases may be the S-gene products. This is the first report identifying S-RNases and describing the inheritance of these S-RNases in apricot.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004970050133
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  • 2
    Electronic Resource
    Electronic Resource
    The inheritance of tetraploid wheat seed peroxidases (1985)
    Springer
    Theoretical and applied genetics 71 (1985), S. 61-67 
    Details
    ISSN: 1432-2242
    Keywords: Triticum turgidum ; Tetraploid wheat ; Peroxidases ; Inheritance ; Linkage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Embryo and endosperm peroxidases from dry mature seeds of three subspecies of tetraploid wheat (Triticum turgidum L.) were subjected to genetic analysis. The inheritance of eight isozymes (embryo isozymes a2, d1, d2, e and f; and endosperm isozymes b, d and 4) were studied in F2's obtained from different wheat accessions. Simple monogenic inheritance producing three banded: one null segregation and two epistatic segregations (9∶7 and 15∶1) were found. In the case of isozymes b, d and 4, monogenic or epistatic segregation depended on the F2 analyzed. Segregation data indicated that at least 9 different loci would determine the peroxidase isozymes of tetraploid wheat seed, all the loci studied containing ‘null’ alleles. Furthermore, several loci determining embryo peroxidases were noticed to be mutually linked. All these data are discussed in context of the inheritance of seed peroxidases in hexaploid wheat and rye.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00278255
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  • 3
    Electronic Resource
    Electronic Resource
    The inheritance of seed peroxidases of wheat and rye: further data (1987)
    Springer
    Theoretical and applied genetics 74 (1987), S. 767-772 
    Details
    ISSN: 1432-2242
    Keywords: Triticum ; Secale ; Wheat ; Rye ; Peroxidases ; Inheritance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Further data on the inheritance of seed peroxidases of hexaploid wheat (Triticum aestivum L.) and rye (Secale cereale L.) have been obtained from the genetic analysis of several progenies of both species. Additional data on the inheritance and the chromosomal location and linkage have been obtained for peroxidases of wheat embryo and rye endosperm. The general presence of null alleles in peroxidase loci has been confirmed in both species. In addition to simple monogenic inheritance, epistatic segregations have been observed in both species. These epistatic segregations again suggest the presence of “regulatory” genes controlling the expression of individual peroxidases in both species and also the existence of several duplicate homoeologous genes in wheat. Known linkage relationships have been confirmed and new ones are indicated. Loci for embryo wheat peroxidases seem to be in chromosomes of the homoeology group 3. The rye endosperm ones should be in chromosome 7R, although it is hypothesized that a duplication of gene EPer1 is located in chromosomes 4R and 7R.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00247555
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  • 4
    Electronic Resource
    Electronic Resource
    Inheritance of high palmitic acid content in the seed oil of sunflower mutant CAS-5 (1999)
    Springer
    Theoretical and applied genetics 98 (1999), S. 496-501 
    Details
    ISSN: 1432-2242
    Keywords: Key words Helianthus annuus ; Sunflower mutant ; Palmitic acid ; Inheritance ; Fatty acid composition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Sunflower genotypes with increased levels of palmitic acid (C16 : 0) in the seed oil could be useful for food and industrial applications. The objective of the present study was to determine the inheritance of the high C16 : 0 content in the sunflower mutant line CAS-5 (〉25% of the total oil fatty acids). This mutant was reciprocally crossed with the lines HA-89 (5.7% C16 : 0) and BSD-2-691 (5.4% C16 : 0), the latter being the parental line from which CAS-5 was isolated. No maternal effect for the C16 : 0 content was observed from the analysis of F1 seeds in any of the crosses. The inheritance study of the C16 : 0 content in F1, F2 and BC1F1 seeds from the crosses of CAS-5 with its parental line BSD-2-691 indicated that the segregation fitted a model of two alleles at one locus with partial dominance for the low content. The analysis of the fatty acid composition in the F2 populations from the crosses with HA-89 revealed a segregation fitting a ratio 19 : 38 : 7 for low (〈7.5%), middle (7.5–15%), and high (〉25%) C16 : 0 content, respectively. This segregation was explained on the basis of three loci (P1, P2, P3) each having two alleles showing partial dominance for low content. The genotypes with a high C16 : 0 content were homozygous for the recessive allele p1 and for at least one of the other two recessive alleles, p2 or p3. This model was further confirmed with the analysis of the F3 and the BC1F1 generations. It was concluded that both the recessive alleles p2 and p3 were already present in the BSD-2-691 line, the allele p1 being the result of a mutation from P1. This genetic study will facilitate breeding strategies associated with the incorporation of the high C16 : 0 trait into agronomically acceptable sunflower hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051097
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  • 5
    Electronic Resource
    Electronic Resource
    Epistatic interaction among loci controlling the palmitic and the stearic acid levels in the seed oil of sunflower (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 105-111 
    Details
    ISSN: 1432-2242
    Keywords: Key words Sunflower ; Helianthus annuus ; High palmitic acid ; High stearic acid ; Epistatic interaction ; Inheritance ; Oil quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Two sunflower (Helianthus annuus L.) mutants with high concentrations of saturated fatty acids in their seed oil have been identified and studied extensively. The mutant line CAS-5 has high concentrations of palmitic acid (C16:0) (〉25% compared with 7% in standard sunflower seed oil) and low-C18:0 values (3%). CAS-3 is characterized by its high levels of stearic acid (C18:0) (〉22% compared with 4% in standard sunflower seed oil) and a low-C16:0 content (5%). CAS-5 also possesses elevated levels of palmitoleic acid (C16:1) (〉5%), which is absent in standard sunflower seed oil. The objective of this study was to determine the relationships between the loci controlling the high-C16:0 and the high-C18:0 traits in these mutants. Plants of both mutants were reciprocally crossed. Gas chromatographic analyses of fatty acids from the seed oil of F1, F2, F3 and the BC1F1 to CAS-5 generations indicated that the loci controlling the high-C16:0 trait exerted an epistatic effect over the loci responsible for the high-C18:0 character. As a result, the phenotypic combination containing both the high-C16:0 levels of CAS-5 and the high-C18:0 levels of CAS-3 was not possible. However, phenotypes with a saturated fatty acid content of 44% (34.5% C16:0+9.5% C18:0) were identified in the F3 generation. These are the highest saturated (C16:0 and C18:0) levels reported so far in sunflower seed oil. When F3 C16:0 segregating generations in both a high- and a low-C18:0 background were compared, the high-C16:1 levels were not expressed as expected in the high-C18:0 background (CAS-3 background). In this case, the C16:1 content decreased to values below 1.5%, compared with 〉5% in a low-C18:0 background. As the stearoyl-ACP desaturase has been reported to catalyze the desaturation from C16:0-ACP to C16:1-ACP, these results suggested that a decrease in its activity was involved in the accumulation of C18:0 in the high-C18:0 mutant CAS-3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050015
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