J Integr Plant Biol. ›› 1991, Vol. 33 ›› Issue (9): -.

• Research Articles •    

Fertilization and Embryo Development in Wheat x Maize Crosses

Wang Jing-lin, Sun Jing-san, Lu Tie-gang, Fang Ren, Cui Hai-rui, Cheng Shu-zeng and Yang Cai   

Abstract: The fertilization and embryo development in crosses of hexaploid wheat “Kangxuan 9” X maize “SS 7700” were studied. Of 180 florets fi,ced after pollination 34(18.9%) had embryo and endosperm, 46(25.6%) had only embryo and 12(6.7%) had only endosperm. Percentages of single or double fertilization were higher than that in control (“Chinese Spring” X maize). The hybrid embryos and endosperms obtained were karyotypically unstable and characterized by rapid elimination of the maize chromosomes to produce haploid wheat embryos. The potentials for wheat haploid production and transfer of DNA segments, including transposable elements, from maize to wheat is discussed.

Key words: Wide crosses, Wheat, Maize, Chromosome elimination

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