부산대학교 도서관

Haploids of barley (Hordeum vulgareL.) can be produced from the interspecificross with H. bulbosumL. Usually, H. bulbosumrequires vernalization to produce pollen because of its winter habit. The objective of this study was to select spring‐habit clones of H. bulbosum to facilitate the crossing of H. vulgarewith H. bulbosum. The efficiency of embryo formation (number of embryos obtained/number of florets pollinated) and haploid production (number of haploids obtained/number of florets pollinated) of clones selected as spring habit were also evaluated. Twenty‐three out of 183 clones flowered without a vernalization treatment. These clones produced sufficient pollen. Efficiencies were 26.3 to 86.5% for embryo formation and 8.2 to 41.9%, for haploid production, and some clones were superior to a conventional winter‐habit type clone. These clones can be used to improve a barley haploid production program.