John Innes Centre, Norwich Research Park, NR4 7UH, Colney, Norwich, UK.
Theor Appl Genet. 1996 Jul;93(1-2):81-5. doi: 10.1007/BF00225730.
The lax-a homeotic mutant of barley has flowers in which lodicules are replaced by stamens (giving five stamens per flower). RFLP mapping of an F2 population from a Bonus lax-a (1) x H. spontaneum cross showed that the mutation was on the short arm of chromosome 7(5H), closely linked to the centromere. An additional F2 population was used to show that the lax-a mutation gave the five-stamen phenotype in all flowers of 6-rowed spikes and that hoods were elevated and reduced in size in lax-a/Hooded double-mutant plants.
大麦的 lax-a 同源异型突变体的花朵中，浆片被雄蕊取代（每朵花有 5 个雄蕊）。来自 Bonus lax-a(1) x H. spontaneum 杂交的 F2 群体的 RFLP 图谱显示，突变位于 7(5H)号染色体的短臂上，与着丝粒紧密连锁。另一个 F2 群体被用来表明 lax-a 突变使 6 行穗的所有花朵具有五雄蕊表型，并且 lax-a/ Hooded 双突变体植物中的浆片升高并且尺寸减小。
