J Integr Plant Biol. ›› 1995, Vol. 37 ›› Issue (4): -.

• Research Articles •    

Naked Oat×Maize Hybridization

Sun Jing-san, Lu Tie-gang, Wang Jing-lin, Sun Xiu-hua, Yang Cai and Wang Xiu-ying   

Abstract: There is a certain frequency of fertilization and embryo productivity in naked oat (Avena nuda L. ) × maize (Zea mays L. ) crosses. The maize pollen readily germinated on the naked oat stigma and more than one pollen tubes grew into the style in about 68% of florets. In a sample of 163 florets fixed after pollination, 5 (3.07%) had only an embryo, 3 (1.84%) had only an endosperm and 10 (6.13%) had both. Overall, 9 haploid and 3 diploid naked oat plants were obtained from 12 seeds which formed following application of maize pollen to about 2200 emasculated naked oat florets. Preliminary studies indicated that elimination of the maize chromosomes occurred early in the embryo and endosperm development. This method gives a new approach for obtaining haplo!d naked oat.

Key words: Arena nucla, Zea mays, Wide crosses, Chromosome elimination, Haploid Production

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