Endosperm abortion and the production of viable Aegilops squarrosa x Triticum boeoticum hybrids by embryo culture [wheat]
1981
Gill, B.S. (Agricultural Experiment Station, Manhatta, KS (USA). Dept. of Plant Pathology) | Waines, J.G. | Sharma, H.C.
Endosperm development and embryo lethality were studied in hybrids of different accessions of Aegilops squarrosa (female) and the diploid wheats Triticum boeoticum, T. monococcum and T. urartu. No cross produced plump viable seed and crosses varied with respect to both endosperm development and embryo viability. Ae. squarrosa X T. urartu hybrids showed good seed development but embryos were semi-lethal and seedling death resulted. Ae. squarrosa X T. monococcum and hybrids showed endosperm abortion and embryos were lethal or semi-lethal. Ae. squarrosa X T. boeoticum hybrid seeds were dead by day 14. However, viable F(,1) squarrosa X boeoticum hybrid plants were obtained by embryo culture at day 10 of seed development. The nature of endosperm abortion was investigated by following early endosperm development and storage-protein synthesis.
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