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MECHANISMS AND GENETIC CONTROL OF PRE-ZYGOTIC INCOMPATIBILITY OF INTERSPECIFIC CROSS FAGOPYRUM ESCULENTUM MOENCH. × F. HOMOTROPI- CUM OHNISHI (ACCESSION C9606)  [2013]

ФеAенко, A A ФЕСЕAКО, И.A.

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Abstract
Pollen of C9606 F. homotropicum is compatible in combination “F. esculentum, long-styled × C9606�€_, but absolutly incompatible in combination “F. esculentum, short-styled × C9606�€_. It was shown that the absolute incompatibility of short pistil of F. esculentum (both thrum- morph and dominant short homostyly) with pollen of C9606 (lineage with large flowers and large pollen) is determined by two mechanisms: morphological factors and gametophytic incompatibility gene. The gametophytic gene blocks the transmission of two tightly linked genes S4 (flower homos- tyly) and SHT (obligate seed shattering) after pollination of short pistils (carrying the dominant gene G) by pollen of F1 hybrids F. esculentum × C9606. Segregation at loci S4 and SHT in progeny obtained in cross F. esculentum, pin × F1 was not affected by activity of the gametophytic gene
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Other subjects

  • S-locus
  • gametophytic incompatibility
  • buckwheat
  • homostyly
  • heterostyly

From the journal

Legumes and Groat Crops